5.3 Introductions, Conclusions, and Sentence Placement

ACT English Section Exam

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1 Exam Format & Strategy

1.1 Current ACT English Facts 1.2 Passage Workflow and Pacing 1.3 Comparing Answer Choices Under Time

2 Punctuation & Sentence Boundaries

2.1 Commas, Semicolons, and Colons 2.2 Fragments, Run-ons, and Comma Splices 2.3 Apostrophes, Dashes, and Parentheses

3 Grammar & Usage

3.1 Agreement, Pronouns, and Reference 3.2 Verb Tense, Mood, and Sequence 3.3 Modifiers, Comparisons, and Parallelism

4 Knowledge of Language

4.1 Concision, Redundancy, and Precision 4.2 Diction, Tone, and Register 4.3 Style Consistency and Sentence Emphasis

5 Production of Writing

5.1 Topic Development and Relevance 5.2 Organization, Transitions, and Cohesion 5.3 Introductions, Conclusions, and Sentence Placement

6 Mixed Passage Practice & Review

6.1 Recurring ACT English Traps 6.2 Missed-Question Analysis 6.3 Final-Week Review Plan

5.3 Introductions, Conclusions, and Sentence Placement

Key Takeaways Explain This Topic AI

An effective introduction orients the reader to the passage's topic, tone, and direction without becoming too broad or too narrow.

A conclusion should close the central idea already developed, not introduce evidence that would require a new paragraph.

Sentence placement works best when the inserted sentence links cleanly to both neighboring sentences.

Topic sentences, concluding sentences, and placement choices are all purpose questions in disguise: the right answer serves the passage's job.

Last updated: June 2026

Introductions set the contract

An introduction should tell readers what kind of passage they are entering. It does not need to announce every detail, but it should establish the topic, tone, and direction. On ACT English, the best opening usually fits the actual passage that follows, not the broadest possible subject.

Weak introductions often fail in predictable ways. Some are too broad , beginning with claims about all of history, society, or human nature when the passage is really about one robotics team. Some are too narrow , focusing on a detail that appears only once. Others are tone mismatches , using slang, drama, or technical language that the rest of the passage does not support. A few are accurate but late: they introduce an idea that belongs in the second paragraph, after the reader already understands the setting.

Intro choice type Likely result ACT decision

Broad universal claim Sounds inflated and delays the real topic Usually reject.

Exact passage focus Names the topic and direction Usually strong.

Random vivid detail Interesting but incomplete Use only if the passage develops it immediately.

Summary of final result May spoil sequence or skip setup Check whether the passage is chronological.

Tone shift Sounds unlike the passage Usually reject.

A strong introduction to a passage about students restoring a wetland boardwalk might mention a student project, a damaged trail, and community use. It would not begin with every civilization has built paths, nor would it start with a detailed sentence about one screw size unless the passage is specifically about engineering hardware.

When choosing an opening sentence, read the first paragraph and skim the passage's route. The correct introduction should make the first paragraph feel expected, not abrupt.