CCSS.ELA-Literacy.L.9-10.2a

ELAGrades 9–10Conventions of Standard English

The Standard

Use a semicolon (and perhaps a conjunctive adverb) to link two or more closely related independent clauses.

Common Core State Standards for English Language Arts

What This Standard Means

Students need to join two complete, related thoughts with a semicolon. They also need to use words like however, therefore, meanwhile, and moreover when the relationship between the ideas needs to be clearer. They should know the difference between a semicolon and a comma.

Mastery looks like clean sentences with two independent clauses on each side, correct punctuation around conjunctive adverbs, and no comma splices. Students often get stuck by using a semicolon with a fragment, forgetting the comma after however or therefore, or using semicolons just to make writing sound fancy.

Ways to Teach It

  • Give students sentence strips with independent clauses and conjunctive adverbs, then have them build correct semicolon sentences on their desks.
  • Ask students to revise two choppy sentences from their draft into one semicolon sentence and explain why the ideas belong together.
  • Show five sentences and have students mark each as correct, comma splice, or fragment after semicolon.
  • Bring in a sports recap or news blurb, then have students combine related facts using semicolons and conjunctive adverbs.

Before This Standard

If students are struggling here, check these first.

Plan a Lesson for CCSS.ELA-Literacy.L.9-10.2a

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Related Standards

Standard text verified against corestandards.org on July 10, 2026.

Page updated July 10, 2026.

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