How do you fix fragments, run-ons, and comma splices, and combine choppy sentences into smoother, more varied ones on an editing item?
Sentence boundaries and combining: recognizing and correcting fragments, run-ons, and comma splices, and combining short, choppy sentences into clearer, more varied ones using coordination, subordination, and appositives, on a TNReady English I or II revising and editing item, and in the essay.
How to fix sentence boundaries and combine sentences on a TNReady English I or II item: correcting fragments, run-ons, and comma splices, and combining choppy sentences with coordination, subordination, and appositives for clarity and variety. These choices also score the writing rubric.
Reviewed by: AI editorial process; not yet individually human-reviewed
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What this skill is asking
Sentence boundaries are where one sentence ends and the next begins, and getting them wrong produces fragments, run-ons, and comma splices, the most common and most damaging sentence errors. Combining is the matching skill: joining short, choppy sentences into clearer, more varied ones. TNReady English I and II revising and editing items test both: correcting a boundary error and choosing the best way to combine sentences. The questions are multiple choice. This skill bridges editing (correctness) and revising (effectiveness): fixing a run-on is correctness, while combining choppy sentences for flow is effectiveness. Both matter on the test and in your essay, where clean boundaries and varied sentences support the writing rubric's Conventions and Clarity of Language dimension.
Fixing the three boundary errors
The boundary errors are the highest-value to recognize and fix.
The test for a boundary error is whether each side of the join is a complete sentence. If both are complete and joined by only a comma, it is a comma splice; if by nothing, a run-on. Subordination is a particularly useful fix on the EOC because it both corrects the error and improves the writing, signalling how the two ideas relate ("When the bell rang, the students rushed"). On editing items, watch for distractor options that "fix" a run-on by creating a comma splice.
Combining for clarity and variety
This skill is where revising and editing meet: boundary correction is editing, and combining for variety is revising, but both are about sentence-level effectiveness. A writer who can combine choppy sentences and avoid boundary errors produces clearer prose, which directly helps the writing subpart essay.
Fixing and combining on an item
Try this
Q1. What are the four standard ways to fix a run-on or comma splice? [Recall]
- Cue. A period (two sentences), a semicolon (related clauses), a comma plus a coordinating conjunction (for, and, nor, but, or, yet, so), or subordination (make one clause dependent with "because", "when", "although"). Subordination often reads most smoothly.
Q2. Combine for clarity and variety: "The hikers were tired. The hikers kept going. They reached the summit." [Short explanation]
- Cue. Use subordination and coordination: "Although the hikers were tired, they kept going and reached the summit." This joins the three choppy sentences into one varied, smooth sentence that shows the relationship (tired, but persisted) without any error.
Exam-style practice questions
Practice questions written in the style of TDOE exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
TNReady English I (editing)1 marksFix the run-on: 'The bell rang the students rushed to class.' (1) no change; (2) The bell rang, the students rushed to class; (3) When the bell rang, the students rushed to class; (4) The bell rang the students, rushed to class.Show worked answer →
Answer: (3). The original fuses two complete sentences with no punctuation (a run-on). Option (3) fixes it by making the first clause subordinate ("When the bell rang"), joining the ideas smoothly with a comma after the introductory clause.
Why not the others: (1) keeps the run-on; (2) creates a comma splice (two complete sentences joined by only a comma); (4) misplaces the comma and breaks the meaning. Subordination is one valid fix; a period or a semicolon would also work.
TNReady English II (revising)1 marksCombine for variety: 'The lake was calm. The lake was clear. We could see the bottom.' Which is best? (1) The lake was calm, the lake was clear, we could see the bottom. (2) The lake was calm and clear, and we could see the bottom. (3) The lake was calm. Clear. Bottom visible. (4) The lake, calm and clear, we could see the bottom.Show worked answer →
Answer: (2). The three short, choppy sentences are combined smoothly: the repeated subject is merged ("calm and clear") and the third idea is joined with a coordinating conjunction, producing one clear, varied sentence.
Why not the others: (1) is a comma splice; (3) is fragmented; (4) is ungrammatical. Combining sentences should improve flow and variety while staying correct. Good combining lifts the writing rubric's clarity dimension.
Related dot points
- Revising for clarity and organization: improving a draft passage by choosing the best transition, sequencing ideas logically, adding or deleting a sentence for unity and coherence, and sharpening a vague sentence, on a TNReady English I or II revising item, where the focus is the writing's effectiveness rather than its correctness.
How to revise a draft for clarity and organization on a TNReady English I or II item: choosing the best transition, sequencing ideas logically, adding or deleting a sentence for unity, and sharpening vague writing. Revising improves effectiveness, distinct from editing for correctness.
- Editing for grammar and usage: identifying and correcting errors in a draft passage, including subject-verb agreement, pronoun agreement and reference, verb tense, and modifier placement, and selecting the revision that fixes the error without introducing a new one, on a TNReady English I or II editing item.
How to edit a draft for grammar and usage on a TNReady English I or II item: finding and fixing subject-verb agreement, pronoun agreement and reference, verb tense, and modifier errors, and choosing the correction that does not introduce a new error. Editing fixes correctness.
- Word choice and precision: revising a draft to choose precise, appropriate words, replacing vague or general wording with specific terms, cutting wordiness and redundancy, matching word choice to a formal academic tone, and fixing commonly confused words, on a TNReady English I or II revising item, and in the essay.
How to revise word choice on a TNReady English I or II item: replacing vague wording with precise terms, cutting wordiness and redundancy, matching a formal academic tone, and fixing confused words. Precise word choice supports the writing rubric's Conventions and Clarity dimension.
- Revising and editing item types: how revising and editing questions are presented on the EOC (a draft passage with numbered or highlighted parts, asked through multiple-choice and technology-enhanced items), how to tell a revising question from an editing one, and how to read the stem and the draft efficiently, on a TNReady English I or II assessment.
How revising and editing questions are presented on the TNReady English I or II EOC: a draft passage with numbered or highlighted parts, asked through multiple-choice and technology-enhanced items. How to tell a revising question from an editing one and read efficiently.
- Punctuation and sentence structure: applying the conventions of standard English punctuation (commas, semicolons, colons, apostrophes, and quotation marks) and recognizing and correcting fragments, run-ons, and comma splices, on a TNReady English I or II editing item, and on the essay.
How to apply punctuation and sentence structure on TNReady English I or II editing items and the essay: commas, semicolons, colons, apostrophes, and quotation marks, and recognizing and fixing fragments, run-ons, and comma splices. These conventions also score the writing rubric.
Sources & how we know this
- TCAP English Language Arts — TDOE (2025)
- Tennessee Academic Standards for English Language Arts — TDOE (2025)