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TOEFL iBT Reading “Read an Academic Passage”: cómo responder a las preguntas “Why does the author mention…?”

Two adults discuss a research report at a campus study table.

Cómo responder a las preguntas de propósito en la tarea “Read an Academic Passage” del TOEFL iBT (formato introducido en 2026): qué hace un ejemplo, hallazgos frente a recomendaciones, afirmaciones prudentes, una rutina de examen y errores típicos. Para lectores de nivel intermedio alto (B2) o superior.

En la tarea “Read an Academic Passage” del TOEFL iBT lees un texto académico breve y respondes a preguntas de opción múltiple sobre él. Una pregunta frecuente es por qué el autor menciona un ejemplo. La respuesta correcta nombra la función del ejemplo, como ilustrar o limitar una afirmación, y no solo su contenido. Otras preguntas comprueban si sabes separar lo que un estudio observó de lo que recomiendan sus autores. Esta guía sigue el formato del TOEFL iBT introducido en 2026 y está pensada para candidatos de nivel intermedio alto (B2) o superior.

¿Para quién es este artículo?

  • Candidatos que preparan el TOEFL iBT con el formato introducido en 2026, siguen bien los textos académicos, pero fallan las preguntas “Why does the author mention…?”.
  • Lectores que eligen respuestas que suenan bien pero dicen demasiado, como “Tables alone caused the increase”.
  • Futuros estudiantes universitarios que quieren una rutina de lectura que también desarrolle el lenguaje prudente de la escritura académica y los seminarios.
  • Demasiado pronto: si un párrafo académico todavía te obliga a consultar el diccionario en cada línea (por debajo de B2, aproximadamente), empieza por las tareas de lectura cotidiana más cortas, como avisos y mensajes, y vuelve después.
  • Demasiado fácil: si ya explicas sin errores el propósito de cada ejemplo y los límites de cada estudio, pasa a repasar los errores de lectura de todas las tareas y a las tareas de comprensión auditiva (enlaces abajo).

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Tarjetas de vocabulario

Personal · noise and study

Where do you study best: in silence or with some background noise? Why do you think that is?

Useful: ‘I tend to concentrate better when…’ · ‘It probably depends on the task.’ · ‘For example, when I’m…’

Personal · being understood

Think of a time you changed the way you spoke to be understood, for example in a new language or group. Did it cost you anything?

Useful: ‘I had to…, which meant that…’ · ‘It worked, but I felt…’ · ‘Looking back, I might have…’

Estructura de la frase

  1. Choose the words that complete the sentence from the passage.

    Birds in noisier areas tended ______ songs with a higher minimum pitch.

    Mostrar respuesta y explicación

    to sing

    Tend is followed by to + base verb: tended to sing.

  2. Choose the words that complete the sentence from the passage.

    The explanation seems ______: by raising the lowest notes of their songs, birds move their signal away from the low rumble of traffic

    Mostrar respuesta y explicación

    straightforward

    Seem works like be: it is followed by an adjective, not an adverb.

  3. Choose the words that complete the sentence from the passage.

    The comparison with human speech is useful, but it may also ______ misleading.

    Mostrar respuesta y explicación

    be

    A modal verb such as may is followed by the base form without to: may be.

  4. Choose the words that complete the sentence from the passage.

    These explanations are not mutually exclusive, and it is likely ______ more than one operates in some populations.

    Mostrar respuesta y explicación

    that

    It is likely is followed by a that-clause with its own subject and verb.

  5. Choose the words that complete the sentence from the passage.

    In some species, lower-pitched songs appear ______ more attractive to females

    Mostrar respuesta y explicación

    to be

    Appear is followed by to + base verb: appear to be.

  6. Choose the words that complete the sentence from the passage.

    In some species, lower-pitched songs appear to be more attractive to females, ______ because only larger or healthier males can produce them.

    Mostrar respuesta y explicación

    possibly

    An adverb modifies the whole because-clause and marks it as one possible reason.

  7. Choose the words that complete the sentence from the passage.

    Urban birds clearly change the way they sing, and noise is very ______ one of the reasons.

    Mostrar respuesta y explicación

    likely

    Very likely here means probably; it limits how strongly the author claims noise is a cause.

  8. Choose the words that complete the sentence from the passage.

    Whether that change represents a successful adaptation, a costly compromise or both is still ______ debated.

    Mostrar respuesta y explicación

    being

    Is still being + past participle is the present continuous passive: the debate is going on now.

Más práctica

Explain Why an Example Is There — worked model

Two adults discuss a research report at a campus study table.

A reading club once gave new members a long list of rules, and few people remembered them. The club replaced the list with three illustrated situations. A concrete example is a specific case that makes a general idea easier to understand. In one picture, a member moves to a quiet corner before answering a phone call. The picture is not really about telephones. It shows how a general rule, respecting other readers, can become a visible action that new members can copy.

What the model shows

  • Definition: a concrete example is a specific case.
  • Function: the phone-call situation turns an abstract rule into a visible action.
  • Wrong scale: “the picture includes a phone” describes content, not purpose.
  • When a question asks why an example appears, name the larger idea it supports.
  • A detail about the picture can be true but still fail to explain its purpose.
  • The strongest answer connects the example to the general principle it illustrates.
  • Read the sentences before and after the example to identify the link.

Find the supported response

A student research group wanted to understand how people learn the categories in a digital museum catalogue. One version grouped objects by the material they were made from. Another grouped them by what people had used them for. The group asked twelve volunteers to find several objects in each version and explain their choices aloud.

A wooden cooking bowl illustrates why these systems can lead to different search paths. In a material-based catalogue, a visitor might look under wood. In a use-based catalogue, the same visitor might look under preparing food. Neither description is necessarily wrong; each highlights a different feature of the object.

Some volunteers found the use-based categories more familiar, while others preferred the material-based labels. Several changed strategy after seeing an object they had not expected. The researchers concluded that a catalogue can support different users by offering more than one route. They did not claim that one classification system was universally best. Their small project also examined search behaviour, not how much visitors remembered about the objects afterward.

  1. Why does the author describe the wooden cooking bowl?

    Mostrar respuesta y explicación

    To show how one object can fit different classification systems

    The bowl connects the two systems: material points to wood, while function points to preparing food.

  2. What did the volunteers do during the project?

    Mostrar respuesta y explicación

    Find objects and explain their choices aloud

    The first paragraph says they found objects in each version and explained their choices.

  3. What does highlights most nearly mean here?

    Mostrar respuesta y explicación

    Draws attention to

    Each system draws attention to a different feature of the same object.

Check the deeper meaning

A student research group wanted to understand how people learn the categories in a digital museum catalogue. One version grouped objects by the material they were made from. Another grouped them by what people had used them for. The group asked twelve volunteers to find several objects in each version and explain their choices aloud.

A wooden cooking bowl illustrates why these systems can lead to different search paths. In a material-based catalogue, a visitor might look under wood. In a use-based catalogue, the same visitor might look under preparing food. Neither description is necessarily wrong; each highlights a different feature of the object.

Some volunteers found the use-based categories more familiar, while others preferred the material-based labels. Several changed strategy after seeing an object they had not expected. The researchers concluded that a catalogue can support different users by offering more than one route. They did not claim that one classification system was universally best. Their small project also examined search behaviour, not how much visitors remembered about the objects afterward.

  1. What recommendation follows from the findings?

    Mostrar respuesta y explicación

    Offer more than one route through the catalogue

    Different preferences and changing strategies support giving users more than one route.

  2. Why does the passage mention volunteers changing strategy?

    Mostrar respuesta y explicación

    To show that a user’s approach may depend on the object

    Several volunteers changed strategy after an unexpected object; this supports flexible search routes.

  3. Which question was outside the project’s stated scope?

    Mostrar respuesta y explicación

    How much visitors remembered later

    The final sentence says the project examined search behaviour rather than later memory.

Explain and transfer the strategy

A student research group wanted to understand how people learn the categories in a digital museum catalogue. One version grouped objects by the material they were made from. Another grouped them by what people had used them for. The group asked twelve volunteers to find several objects in each version and explain their choices aloud.

A wooden cooking bowl illustrates why these systems can lead to different search paths. In a material-based catalogue, a visitor might look under wood. In a use-based catalogue, the same visitor might look under preparing food. Neither description is necessarily wrong; each highlights a different feature of the object.

Some volunteers found the use-based categories more familiar, while others preferred the material-based labels. Several changed strategy after seeing an object they had not expected. The researchers concluded that a catalogue can support different users by offering more than one route. They did not claim that one classification system was universally best. Their small project also examined search behaviour, not how much visitors remembered about the objects afterward.

Your open task

  • Explain the bowl example using a different everyday object with two possible categories.
  • Distinguish one observed result from the researchers’ recommendation.
  • Propose an additional catalogue route and explain who might benefit.

Find the supported response

A campus design class conducted a small observation project in a courtyard. For one week, the courtyard contained only individual chairs. During a second week, the same chairs were placed around several small tables. The students counted how many visitors spoke to someone they had not arrived with. They also asked a few visitors why they had chosen a particular seat.

More new conversations were observed during the second week. Some visitors said that a shared table gave them an easy reason to speak, such as asking whether a place was free. Others still preferred an isolated chair, especially when reading or making a phone call. The students therefore proposed a mixed arrangement rather than replacing every individual seat.

Their report was cautious. The weather was warmer in the second week, and a campus event brought extra visitors to the area. These differences could have influenced the observations. The project suggested that furniture arrangement may facilitate conversation, but it did not establish that tables alone caused the change.

  1. Which statement best captures the passage’s main idea?

    Mostrar respuesta y explicación

    Shared tables may encourage conversation, but the evidence has limits

    The report links arrangement to possible conversation benefits while explicitly noting confounding differences.

  2. Why did some visitors prefer an isolated chair?

    Mostrar respuesta y explicación

    They wanted to read or make a phone call

    The second paragraph gives reading and phone calls as reasons for choosing individual seating.

  3. What does facilitate most nearly mean in this passage?

    Mostrar respuesta y explicación

    Make easier

    Shared tables gave visitors an easy opening for conversation; facilitate therefore means make easier.

Check the deeper meaning

A campus design class conducted a small observation project in a courtyard. For one week, the courtyard contained only individual chairs. During a second week, the same chairs were placed around several small tables. The students counted how many visitors spoke to someone they had not arrived with. They also asked a few visitors why they had chosen a particular seat.

More new conversations were observed during the second week. Some visitors said that a shared table gave them an easy reason to speak, such as asking whether a place was free. Others still preferred an isolated chair, especially when reading or making a phone call. The students therefore proposed a mixed arrangement rather than replacing every individual seat.

Their report was cautious. The weather was warmer in the second week, and a campus event brought extra visitors to the area. These differences could have influenced the observations. The project suggested that furniture arrangement may facilitate conversation, but it did not establish that tables alone caused the change.

  1. Why is the campus event mentioned?

    Mostrar respuesta y explicación

    It may have affected who used the courtyard

    The event brought extra visitors, so it is a possible influence beyond furniture arrangement.

  2. What arrangement did the students recommend?

    Mostrar respuesta y explicación

    A combination of shared and individual seating

    The report proposes a mixed arrangement in response to different visitor preferences.

  3. Which conclusion is too strong for the evidence?

    Mostrar respuesta y explicación

    Tables alone caused the increase in conversations

    The final paragraph explicitly rejects a claim that tables alone caused the observed change.

Explain and transfer the strategy

A campus design class conducted a small observation project in a courtyard. For one week, the courtyard contained only individual chairs. During a second week, the same chairs were placed around several small tables. The students counted how many visitors spoke to someone they had not arrived with. They also asked a few visitors why they had chosen a particular seat.

More new conversations were observed during the second week. Some visitors said that a shared table gave them an easy reason to speak, such as asking whether a place was free. Others still preferred an isolated chair, especially when reading or making a phone call. The students therefore proposed a mixed arrangement rather than replacing every individual seat.

Their report was cautious. The weather was warmer in the second week, and a campus event brought extra visitors to the area. These differences could have influenced the observations. The project suggested that furniture arrangement may facilitate conversation, but it did not establish that tables alone caused the change.

Your open task

  • Explain the main claim to someone who has not read the report, including one limitation.
  • Use facilitate in a new sentence about learning or communication.
  • Suggest one change that would make a follow-up observation easier to interpret.

Infer Carefully and Check Exceptions — worked model

Two adults discuss a research report at a campus study table.

In a small study, a class surveyed twenty people who used a neighbourhood noticeboard. Most said they noticed large headings before reading smaller details. The class concluded that headings deserved careful attention when a message was designed. It did not conclude that readers ignored all smaller text or that every neighbourhood had the same preferences.

An inference combines information that the passage supplies. If headings are noticed first, a heading may affect whether a reader continues. This is a cautious extension of the observation. By contrast, claiming that a particular font doubles attendance would require evidence that the passage never provides. The size of the sample also limits how widely the finding can be applied.

What the model shows

  • A warranted inference stays close to stated evidence.
  • Not stated and contradicted are different: an unmentioned font effect is simply unsupported.
  • Watch absolute words such as all, always and proves.
  • For an EXCEPT question, verify the supported choices before identifying the unsupported one.

Find the supported response

A student project compared two versions of a notice about borrowing sports equipment. Both versions contained the same information: collection hours, return instructions and a contact address. In Version A, this information appeared in one continuous paragraph. In Version B, it appeared under three short headings. Sixteen students each read one version and then described what they would do to borrow and return an item.

Students who read Version B more often mentioned the return instructions without being prompted. However, the two groups were similar in how often they recalled the contact address. Several readers of Version A said they had focused on the opening sentence and overlooked later details.

The project team suggested using headings when a notice contains several separate actions. The team also noted important limits. The students were volunteers from one class, the groups were small, and the project involved only one notice. A later study would need different readers and messages before the team could make broader claims about notice design.

  1. Which inference is best supported?

    Mostrar respuesta y explicación

    Headings may help readers notice separate actions in a message

    Version B improved recall of return instructions, supporting a limited claim about noticing separate actions.

  2. What was the same in both notice versions?

    Mostrar respuesta y explicación

    The information about collection, return and contact

    The first paragraph states that the same information appeared in different layouts.

  3. Which detail did the two groups recall at similar rates?

    Mostrar respuesta y explicación

    The contact address

    The second paragraph directly contrasts similar contact-address recall with different return-instruction recall.

Check the deeper meaning

A student project compared two versions of a notice about borrowing sports equipment. Both versions contained the same information: collection hours, return instructions and a contact address. In Version A, this information appeared in one continuous paragraph. In Version B, it appeared under three short headings. Sixteen students each read one version and then described what they would do to borrow and return an item.

Students who read Version B more often mentioned the return instructions without being prompted. However, the two groups were similar in how often they recalled the contact address. Several readers of Version A said they had focused on the opening sentence and overlooked later details.

The project team suggested using headings when a notice contains several separate actions. The team also noted important limits. The students were volunteers from one class, the groups were small, and the project involved only one notice. A later study would need different readers and messages before the team could make broader claims about notice design.

  1. All of the following are stated limits EXCEPT:

    Mostrar respuesta y explicación

    The notices contained different information

    Different information is not a stated limitation; the two versions explicitly contained the same information.

  2. Why would a later study need different readers and messages?

    Mostrar respuesta y explicación

    To examine whether the finding extends beyond this small project

    The limited sample and single message prevent broad conclusions without further investigation.

  3. What does overlooked most nearly mean here?

    Mostrar respuesta y explicación

    Failed to notice

    Readers focused on the opening and missed later details; overlooked means failed to notice.

Explain and transfer the strategy

A student project compared two versions of a notice about borrowing sports equipment. Both versions contained the same information: collection hours, return instructions and a contact address. In Version A, this information appeared in one continuous paragraph. In Version B, it appeared under three short headings. Sixteen students each read one version and then described what they would do to borrow and return an item.

Students who read Version B more often mentioned the return instructions without being prompted. However, the two groups were similar in how often they recalled the contact address. Several readers of Version A said they had focused on the opening sentence and overlooked later details.

The project team suggested using headings when a notice contains several separate actions. The team also noted important limits. The students were volunteers from one class, the groups were small, and the project involved only one notice. A later study would need different readers and messages before the team could make broader claims about notice design.

Your open task

  • Give a cautious conclusion using may or suggests and support it with one observation.
  • Explain why one unsupported statement is not the same as a disproved statement.
  • Design a better follow-up comparison in two or three sentences.

Careful claims: hedging in the passage

  1. Choose the words that complete the sentence from the passage.

    Birds in noisier areas tended ______ songs with a higher minimum pitch.

    Mostrar respuesta y explicación

    to sing

    Tend is followed by to + base verb: tended to sing.

  2. Choose the words that complete the sentence from the passage.

    The explanation seems ______: by raising the lowest notes of their songs, birds move their signal away from the low rumble of traffic

    Mostrar respuesta y explicación

    straightforward

    Seem works like be: it is followed by an adjective, not an adverb.

  3. Choose the words that complete the sentence from the passage.

    The comparison with human speech is useful, but it may also ______ misleading.

    Mostrar respuesta y explicación

    be

    A modal verb such as may is followed by the base form without to: may be.

  4. Choose the words that complete the sentence from the passage.

    These explanations are not mutually exclusive, and it is likely ______ more than one operates in some populations.

    Mostrar respuesta y explicación

    that

    It is likely is followed by a that-clause with its own subject and verb.

  5. Choose the words that complete the sentence from the passage.

    In some species, lower-pitched songs appear ______ more attractive to females

    Mostrar respuesta y explicación

    to be

    Appear is followed by to + base verb: appear to be.

  6. Choose the words that complete the sentence from the passage.

    In some species, lower-pitched songs appear to be more attractive to females, ______ because only larger or healthier males can produce them.

    Mostrar respuesta y explicación

    possibly

    An adverb modifies the whole because-clause and marks it as one possible reason.

  7. Choose the words that complete the sentence from the passage.

    Urban birds clearly change the way they sing, and noise is very ______ one of the reasons.

    Mostrar respuesta y explicación

    likely

    Very likely here means probably; it limits how strongly the author claims noise is a cause.

  8. Choose the words that complete the sentence from the passage.

    Whether that change represents a successful adaptation, a costly compromise or both is still ______ debated.

    Mostrar respuesta y explicación

    being

    Is still being + past participle is the present continuous passive: the debate is going on now.

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Cómo es la tarea

Lees un solo texto, por ejemplo el relato breve de un estudio o una explicación científica. No necesitas conocimientos previos: toda respuesta correcta se apoya en el texto. Las preguntas de práctica comprueban cinco cosas:

  • Idea principal: “Which statement best captures the passage’s main idea?”
  • Detalle: “What did the volunteers do during the project?”
  • Vocabulario: “What does highlights most nearly mean here?”
  • Inferencia: “Which inference is best supported?”
  • Propósito: “Why is the campus event mentioned?”

Preguntas de propósito: pregúntate qué hace el ejemplo

Un ejemplo es un caso concreto que hace más fácil de entender una idea general; una pregunta de propósito pregunta por su función, no por su contenido. Nombra primero la función: ilustrar, contrastar, hacer que una idea sea fácil de imaginar o matizar una afirmación.

Pruébalo con un texto sobre un catálogo de museo que agrupa los objetos por material o por uso: un visitante podría buscar en “wood” o en “preparing food”.

  • “A wooden cooking bowl illustrates why these systems can lead to different search paths.”
¿Por qué describe el autor el cuenco de madera para cocinar?

¿Observación, recomendación o afirmación sin comprobar?

Las respuestas incorrectas suelen mezclar las capas de un estudio:

  • Observación: “Some volunteers found the use-based categories more familiar, while others preferred the material-based labels.”
  • Recomendación: “The researchers concluded that a catalogue can support different users by offering more than one route.”
  • Fuera del alcance: el texto dice que el proyecto “examined search behaviour, not how much visitors remembered about the objects afterward”, así que una respuesta sobre la memoria no tiene apoyo.
  • Límites: en un estudio en un patio hubo más conversaciones en las mesas compartidas, pero esa semana hizo más calor y un evento del campus atrajo a más visitantes, así que “Tables alone caused the increase” es demasiado fuerte.

Lenguaje prudente: cómo limita un autor cuidadoso una afirmación

Los autores académicos suavizan sus afirmaciones para ajustarlas a la evidencia, y las respuestas correctas conservan esa prudencia. Fíjate en la gramática:

  • tend to + verbo en forma base: “Birds in noisier areas tended to sing songs with a higher minimum pitch.”
  • seem + adjetivo, no adverbio: “The explanation seems straightforward.”
  • may + verbo en forma base, sin to: “The comparison with human speech is useful, but it may also be misleading.”
  • it is likely that + oración completa: “It is likely that more than one operates in some populations.”
  • appear to be: “lower-pitched songs appear to be more attractive to females”
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Errores típicos

En español, “es probable que” pide subjuntivo (“es probable que opere”), pero en inglés “it is likely that” va seguido de un verbo conjugado normal: “It is likely that more than one operates”, no “operate”.

  • Elegir una respuesta que describe el ejemplo en lugar de explicar por qué está ahí.
  • Aceptar “all”, “always” o “proves” cuando el texto es prudente.
  • Tomar una comparación al pie de la letra: una persona que alza la voz en una fiesta llena de gente ayuda a imaginar a los pájaros cantando por encima del tráfico, pero el autor advierte que la comparación puede ser engañosa.
  • En una pregunta EXCEPT, no confirmar primero las opciones que el texto sí respalda.

Cómo practicar

Un texto al día basta para crear el hábito. Esta rutina dura unos 20 minutos:

  • Lee: escribe la idea principal en una frase, con su límite incluido.
  • Responde: anota la frase que demuestra cada elección.
  • Etiqueta: marca tres frases como observación, recomendación o límite.
  • Transfiere: explica el cuenco con un objeto tuyo; un casco de bicicleta podría ir en “plastic” o en “safety equipment”.
  • Habla: responde en voz alta a una pregunta de debate con una expresión prudente: “I tend to concentrate better when…” o “It probably depends on the task.”

Siguiente paso

Cuando puedas nombrar la función de cada ejemplo y el límite de cada estudio, repasa tus errores en las tareas de lectura y pasa a la comprensión auditiva, donde las respuestas también deben ajustarse con precisión a la evidencia.

Preguntas frecuentes

¿Qué es “Read an Academic Passage” en el TOEFL iBT?

Es una tarea de Reading del formato del TOEFL iBT introducido en 2026: lees un texto académico breve y respondes a preguntas de opción múltiple sobre su idea principal, sus detalles, su vocabulario, las inferencias y el propósito de sus ejemplos.

¿Cómo respondo a “Why does the author mention…?” en la lectura del TOEFL?

Lee las frases que rodean el ejemplo, decide qué idea general respalda y elige la respuesta que indica su función, como ilustrar o contrastar. Una respuesta que solo describe el ejemplo suele ser una trampa.

¿“No se menciona” es lo mismo que “falso” en la lectura del TOEFL?

No. Una afirmación falsa contradice el texto; una que no se menciona simplemente no tiene apoyo, como una afirmación sobre tipos de letra en un texto que nunca habla de ellos. Ninguna de las dos es correcta cuando la pregunta trata de lo que dice el texto.

Flalingo no está afiliado a las organizaciones que administran TOEFL ni cuenta con su respaldo.

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