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Life · Guided lesson

Repair fragments and run-ons

About 9 minutes · 3 reading + 6 practice and checks
Time includes reading, practice, and questions. Extra videos or further study are optional.
See this course’s project requirements

A sentence-editing portfolio with before/after examples, named repairs and a final paragraph checked for meaning, grammar and clarity.

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • Classify independent/dependent clauses and phrases.
  • Repair a fragment and a comma splice with preserved meaning.
  • Annotate agreement, tense and ambiguous pronouns.
  • Explain three structural punctuation choices.
  • Submit the full paragraph edit and cause-based revision log.

Review and revise

Use these criteria to check your work and choose what to improve.

  • Method: applies the course-specific rules to the supplied cases with visible intermediate work.
  • Accuracy: results agree with the stated facts, units, boundaries and independent checks.
  • Reasoning: explains why the result follows and identifies a limitation or unresolved question.
  • Transfer: completes changed cases and revises the final project when a relevant assumption changes.
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Before you begin

The idea in everyday life

Practice draft: The room was locked, we waited outside. Because the key was missing. Supplied meaning: The missing key caused the wait.

The idea

Two independent clauses need an appropriate boundary or connector. A comma alone does not normally join them in the supplied formal prose. A period separates thoughts; a conjunction can explain their relationship.

Follow along

Repair fragments and run-ons — worked practice

Two independent clauses need an appropriate boundary or connector. A comma alone does not normally join them in the supplied formal prose. A period separates thoughts; a conjunction can explain their relationship.

Practice draft: The room was locked, we waited outside. Because the key was missing. Supplied meaning: The missing key caused the wait.

Original practice material

Paste at A1.

AMaterialBSupplied text
CasePractice draft: The room was locked, we waited outside. Because the key was missing. Supplied meaning: The missing key caused the wait.

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  1. 1. 1. Diagnose

    Identify the two independent clauses in the opening sentence.

    You should see: The room was locked / we waited outside.

  2. 2. 2. Separate

    Repair with a period.

    You should see: The room was locked. We waited outside.

  3. 3. 3. Connect

    Use because to preserve the reason relationship.

    You should see: We waited outside because the key was missing.

  4. 4. 4. Compare

    Explain what the repairs preserve.

    You should see: The lock and wait are both stated; the causal link is explicit in the combined version.

Now change one thing

Choose period or comma-alone to separate The gate closed and We used another entrance in formal prose. Enter the exact choice.

Your work

What to finish

Before/after clause repairs with a stated reason or result.

Common mistake

Watch for this

A reason, a contrast and a result are different claims. The connector must preserve the intended relationship between the supplied events.

How can I tell I understand it?

Choose a changed repair by its grammar and intended relationship rather than by sentence length.

Try 3 questions

Quick knowledge check

Answer all 3 questions. Get at least 2 right and the lesson completes automatically.

Not yet passed

You’ll get an explanation for each answer. Signed in? Your results save to your account.

1Which repair joins two independent clauses with an appropriate connector?
2Which repair supplies the missing main clause?
3Why choose a connector based on meaning rather than at random?
0 of 3 answeredApply the lesson to a short question, then review the explanation.
2
Finish this lesson

Pass the check. We’ll save the progress.

Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.

Go to the knowledge check
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Sources and further reading

Explore the references behind this lesson.

OpenStax: editing handbook
Source & access notes · checked 2026-10-01

Web open/search showed the official page, its topic heading and relevant concept description. This is a content/source check, not a provider endorsement.

Access: Official page retrieved with the web reader on 2026-10-01; interactive tools and videos were not certified by retrieval.

Reuse: Original fictional teaching cases, calculations, questions and examples; link and short factual paraphrase only. No copied source exercises or illustrations.

OpenStax: sentence structure
Source & access notes · checked 2026-10-01

Web open/search showed the official page, its topic heading and relevant concept description. This is a content/source check, not a provider endorsement.

Access: Official page retrieved with the web reader on 2026-10-01; interactive tools and videos were not certified by retrieval.

Reuse: Original fictional teaching cases, calculations, questions and examples; link and short factual paraphrase only. No copied source exercises or illustrations.

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