Long-Passage Reading: Main Idea, Detail, Inference, and Reference
What long-passage reading asks
Long-passage items test main idea, detail retrieval, inference, and reference resolution. You must read for structure: what the passage is about, how the writer supports it, and what pronouns or phrases point back to.
Core rules
- Read the first and last sentences of each paragraph for the topic and conclusion.
- Separate main idea from supporting examples. A detail can be true but not the main idea.
- For reference questions, substitute the candidate noun into the sentence and check number and meaning.
- For inference, choose the answer supported by evidence, not by your own opinion.
- Notice contrast and cause markers: 'however,' 'although,' 'therefore,' 'as a result.'
Worked example
Passage: 'Mika started a recycling project at her school. At first, few students joined. She put posters near the vending machines and explained how much waste the school produced. Within a month, the project had thirty members. It was not easy, but the results surprised her.' Question: What does 'It' refer to in 'It was not easy'? Reason: 'It' is singular and refers to the activity just described: starting and building the recycling project. It does not refer to 'thirty members' (plural idea) or 'the results.' The contrast 'but the results surprised her' confirms that the difficult thing was the project work.
Traps
- Choosing a true detail as the main idea.
- Over-inferring: adding reasons the passage never states.
- Missing a pronoun's antecedent across sentences.
- Ignoring 'not' and 'few,' which reverse meaning.
- Answering from general knowledge instead of the text.