5.3 Introductions, Conclusions, and Sentence Placement
Key Takeaways
- 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.
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.
A passage explains how students designed removable ramps so a local theater stage could be used by more performers. Which opening best fits?
Conclusions close, not restart
A conclusion should feel earned. It can restate the central idea in fresh terms, show the significance of the passage, or point to a result that follows from the developed material. It should not introduce a brand-new claim that would need proof. If a final sentence raises a new topic, the reader is left expecting another paragraph.
For ACT English, test conclusion choices against three questions:
- Does it reflect the whole passage? A conclusion should not summarize only one minor detail.
- Does it avoid unsupported new evidence? New statistics, new people, or new conflicts often need development.
- Does the tone match? A calm explanatory passage should not end with a slogan or joke unless the passage has used that style throughout.
Imagine a passage about a community archive that digitizes photographs from neighborhood residents. A weak conclusion might say that photography was invented in the nineteenth century. That may be true background, but it does not close the passage's idea. Another weak conclusion might introduce a dispute about copyright law that the passage never discussed. A stronger conclusion would connect digitizing photos to preserving local memory and making it easier for residents to share stories.
Conclusions can be specific, but they should be specifically tied to the central route. If the passage has shown problem, project, and outcome, the final sentence can name the outcome's meaning. If the passage has compared two approaches, the final sentence can clarify why the preferred approach matters.
Conclusion traps
- New evidence trap: The sentence adds a fact that needs its own support.
- Tiny-detail trap: The sentence closes one example but ignores the passage's larger focus.
- Sentimental trap: The ending sounds emotional but does not match the passage's reasoning.
- Repeat trap: The ending copies the introduction without adding closure.
- Opposite-focus trap: The ending emphasizes a point the passage has not developed.
A passage describes how a community archive digitized residents' photographs so families and researchers could access local history. Which conclusion is most effective?
Sentence placement links both sides
Sentence placement questions are middle-of-the-passage versions of introduction and conclusion questions. The inserted sentence has a job, and that job must fit the surrounding route. Do not choose a location after reading only the sentence itself. Test the sentence before and the sentence after each possible location.
A sentence with a pronoun or phrase such as this method, these results, or the problem needs an antecedent nearby. A sentence with first, later, or finally must fit the sequence. A sentence that gives an example should follow the claim it illustrates. A sentence that defines a term should usually come before the term is used repeatedly.
The best location often creates a three-sentence chain:
| Before | Inserted sentence | After |
|---|---|---|
| General claim | Specific example or explanation | Consequence or next detail |
| Problem | Proposed solution | Result of solution |
| New term | Definition | Use of term in context |
| Cause | Linking sentence | Effect |
| Background | Narrower focus | Main paragraph development |
Consider this sentence: The students solved this problem by adding rubber feet to the display stands. It should appear after the paragraph identifies the problem, such as the stands sliding on polished floors, and before a sentence reporting that the revised stands stayed in place during an exhibit. Placing it before the problem makes this problem unclear. Placing it after the result makes the solution arrive too late.
Topic sentences are placement questions at the paragraph level. A good topic sentence introduces the paragraph's job and connects to the previous paragraph when needed. If the paragraph will explain a drawback, the topic sentence should signal a drawback. If it will shift from design to testing, the topic sentence should prepare that shift.
Under time, read around the numbered sentence rather than rereading the whole passage. Still, for broad placement questions, skim paragraph jobs. A sentence can be perfect locally but wrong globally if it belongs in a different paragraph.
A sentence reads: The students solved this problem by adding rubber feet to the display stands. Which surrounding order makes the placement most logical?