2nd grade combining sentences worksheets

Combining sentences worksheets for second grade show two short, choppy sentences that share a part. Your child picks the combination that says it once and joins the rest with and, but, or or. The wrong choices repeat words clumsily or use a bare comma.

Free printable PDF worksheet, aligned to Common Core L.2.1.f.

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The kind of sentences you'll get

Read the two sentences. Circle the letter of the sentence that combines them best.

  1. The muffins burned. The kitchen got smoky. The muffins burned, the kitchen got smoky. · The muffins burned, and the kitchen got smoky. · The muffins burned, or the kitchen got smoky.

    Answer: The muffins burned, and the kitchen got smoky.

  2. Omar lost a tooth. He smiled anyway. Omar lost a tooth, but he smiled anyway. · Omar lost a tooth so anyway he smiled but. · Omar lost a tooth, he smiled anyway.
  3. Tom likes trains. His brother likes planes. Tom likes trains, his brother likes planes. · Tom likes trains, so his brother likes planes. · Tom likes trains, but his brother likes planes.

Every print pulls a fresh set of sentences at this level, so a make-up test or a second sibling never gets the same sheet.

What's on each sheet

Every version prints on US Letter or A4, with its answer key on the last page.

How to teach this

Read the two short sentences aloud, then ask what got said twice. Fold the repeat away together before looking at the choices. Kids who find the shared part first pick the right combination almost every time; kids who skim the choices first get fooled by the comma splice.

Watch for: Kids glue sentences with just a comma: 'Ben has a kite, Ben has a drum.' That is a comma splice. Joining needs a joining word, or the repeats folded away. Kids pick and for everything. And adds, but pushes back, or offers a choice, so gives a result. Reading the combined sentence aloud with the wrong word usually exposes it.

Common questions about combining sentences

What do the wrong choices look like?
The classics: the comma splice (two sentences glued with a comma) and the clumsy repeat (Ben has a kite and Ben has a drum). Each wrong choice is a real mistake kids make, not filler.
Why combine sentences at all?
Choppy writing reads like a list. Combining is how young writers turn three short thoughts into one sentence that flows, and second grade (L.2.1.f) is where that practice starts.

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Aligned to Common Core L.2.1.f. Reviewed by the One more sheet team. Content version 178, updated August 2026.

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