Central Ideas — 700-800

Central Ideas & Details: The 700-800 Patterns

Part 1 of 3 — What Hard Main-Idea Passages Actually Look Like

Easy main-idea passages announce a thesis. Hard ones are built on a turn: they grant something real, then locate its limit. The main idea is always both halves, and every distractor is a way of keeping only one.

Archetype 1: The Two-Part Main Idea (concede + limit)

The passage's shape: "X works / is real / is well documented... but at the wrong hours / in the wrong place / for a different reason." The correct answer carries the concession and the limitation ("cut energy per fixture, but total brightness held"). Distractors: one that keeps only the success, one that inflates the limit into total failure. If your answer could have been written without reading past the pivot, it's wrong.

Archetype 2: The Hedge-Preserver

Authors at this level say "may," "suggests," "appears," "not all." Correct answers preserve the hedge exactly. Distractors convert it: "may reflect collection timing" becomes "proves flowering hasn't changed"; "two of four differences persisted" becomes "has no influence." A hedged passage never supports an absolute answer — and it also never supports a recommendation ("cities should stop..."), because describing a limit is not prescribing a policy.

Archetype 3: The Relocated Problem

A fix improves the measured spot while the problem moves — off the reporting books, to the adjacent street, to the ships waiting offshore. The main idea is the relocation, not the improvement and not a scandal. Watch for the quiet sentence telling you where the measurement was taken.

Archetype 4: The Literary Inference

Fiction excerpts ask what the text "most strongly suggests." The near-miss choice assigns a plausible emotion (resentment, regret, suspicion) that one explicit phrase rules out ("she was not sorry," "he did not think of a thief"). Find that phrase before you answer — the passage always plants it.

The move that solves all four: locate the final sentence's claim, then check which choice needs every preceding sentence to be true. Hard passages waste nothing.

Central Ideas & Details: Traps & Speed

Part 2 of 3 — The Distractor Taxonomy

Hard main-idea items reuse the same five wrong-answer species. Learn to name them and elimination becomes mechanical.

The five distractor species

1. The Half-Keeper — states the concession or the limit, never both. Often quotes the passage's own first sentence back at you. It's the appearance the passage exists to complicate.
2. The Hedge-Inflator — turns "may," "suggests," or "in most cases" into "proves," "never," "no effect." Also inflates in reverse: a passage that questions a claim gets an answer that denies it.
3. The Prescriber — converts description into advice: "should stop funding," "should be adopted everywhere." Hard passages diagnose; they almost never prescribe. If the passage contains no "should," the answer can't either.
4. The True-But-Not-It — a statement the passage genuinely supports, drawn from a supporting detail, background fact, or mechanism. Truth is not the test; aboutness is. Ask: "is this what the passage was built to establish, or something it used along the way?"
5. The Motive-Inventor (literary and historical passages) — assigns intent, blame, or emotion the text never states: evasion, resentment, fraud, deliberate avoidance. The passage always plants one explicit phrase that kills it.

Speed protocol (target: 75 seconds)

• Read the last sentence first when the question is "main idea" — hard passages almost always land the thesis there, hedges intact.
• Then read the whole passage to verify, watching for the pivot word (but, however, yet, though).
• Eliminate by species, not by re-reading: label each choice Half-Keeper / Inflator / Prescriber / True-But-Not-It / Motive-Inventor. Any label you can attach is a kill.
• The surviving choice usually sounds less impressive than the distractors — correct answers at this level are precise, hedged, and a little boring.

Central Ideas & Details: Timed Drill

Part 3 of 3 — Four Items at Full Difficulty

Pacing target: 60-75 seconds per question. Run the protocol:

1. Last sentence first — find the thesis and its hedges.
2. Full read — mark the pivot.
3. Label distractors by species: Half-Keeper, Hedge-Inflator, Prescriber, True-But-Not-It, Motive-Inventor.
4. The right answer needs both halves of the turn and keeps every hedge.

One literary item is included — for that one, find the planted phrase that states the character's actual inner state before you judge any choice.