Main Ideas in Academic Passages
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Lesson overview
Recognising the central point of university-style passages.
Go to lesson quiz →Exam guidance · TOEFL Examiner Lens
Pacing
Read the stem stem-last (question clause first), eliminate two distractors, then verify constraints.
How TOEFL marks this
Focus on how TOEFL scenarios frame constraints, qualifiers ("FIRST", "BEST", "MOST likely"), and boundary cases.
Watch out for
Technically true statements that do not solve the specific constraint in the scenario.
Lesson content
Overview — Main Ideas in Academic Passages
Recognising the central point of university-style passages. This lesson is at the beginner level — by the end, you'll be able to recognise this question type, apply a reliable method, and avoid the traps that cost marks.
Key Concept
TOEFL academic passages are built around one controlling idea per paragraph, usually stated in the first or second sentence, with everything after it serving as support, example, or contrast.
Why It's Tested This Way
ETS tests main-idea recognition because it separates students who can process a whole passage's argument from those who only recognise isolated facts — university reading demands the former.
Method
Read the first and last sentence of each paragraph first to predict the passage's overall thesis, then confirm by checking whether every paragraph's topic sentence supports or extends that thesis.
Worked Example
A passage opens 'Coral reefs, though occupying less than 1% of the ocean floor, support nearly a quarter of all marine species.' The main idea is coral reefs' outsized ecological importance, not the 1% statistic itself, which is only supporting detail.
Second Worked Example
A passage on urbanization states 'As cities expanded in the 19th century, sanitation systems failed to keep pace, triggering repeated cholera outbreaks.' The main idea is that rapid urban growth outpaced infrastructure, with cholera serving as the illustrating consequence, not the topic itself.
Common Traps
The most common trap is picking an answer choice built from a vivid supporting detail (a statistic, an example, a named scientist) rather than the general claim that detail was included to support — TOEFL rewards the umbrella idea, not the most memorable sentence.
Lesson Summary
Remember: (1) identify what is being asked, (2) apply the TOEFL strategy, (3) check against the traps. Complete the 10-question quiz below to unlock the next lesson — you need at least 60% to pass.
Mastery Check · Lesson Quiz · pass 60%
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