How it works
Each free sheet draws 6 of 128 sentence pairs, with the joining word in brackets and a line to write the new sentence. It opens on and: Sam ran. Sam jumped. becomes Sam ran and jumped.
Read the full guide
Three sets, easiest first
Set picks one. Join with and keeps the shared words once (48 pairs). Join with but, or, so joins two whole sentences with a comma before the joining word (40). The third set uses because, when, if and although (40).
Complex sentence worksheets
The because, when, if and although set makes complex sentences: one part cannot stand alone. When it comes first, a comma follows it: Although it was cold, we played outside.
- The key shows one way to write each sentence. Sam ran, and Sam jumped is also right; praise the shorter one.
Questions and answers
When do you need a comma before and, but or so?
When each side could be a sentence of its own: It was cold, so I wore my coat. When the sentences share a subject and only the verbs join, leave it out: Sam ran and jumped.
What grade learns combining sentences?
The Common Core asks first graders to use and, but, or, so and because (L.1.1g) and third graders to write simple, compound and complex sentences (L.3.1i). The three sets follow that order.
Can I add my own sentences?
Yes. Type one task a line, an equals sign, then the joined sentence for the key: We sang. We danced. (and) = We sang and danced. Your lines replace ours.