Complex sentences worksheets
Each print is a different sheet with its own answer key. You don't need to sign up.
A complex sentence has a part that cannot stand alone, hooked to a part that can. Words like because, when, and although start the hanging part.
Three grades, each its own sheet. Print one here, or open a grade for examples and teaching notes.
Print by grade
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3rd grade
Complex sentences worksheets for third grade teach the third shape: a sentence with a part that leans. Your child labels each sentence simple, compound, or complex, and the complex ones always start their leaning part with a clear signal word like because, when, or although.
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4th grade Core grade
Each print is a different sheet with its own answer key. You don't need to sign up.
Fourth grade worksheets mix all three shapes in equal measure and add trickier complex sentences, including ones where the leaning part comes second. The three-way label forces a real decision: count the who-did-what pairs, then check whether one of them leans.
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5th grade
Fifth grade complex sentences worksheets bring in relative clauses (the runner who finished last) and the phrase-opener trap (After lunch, we read is still simple). Labeling at this level is the doorway to the clause work sixth grade expects.
More on sentence structure
All sentence structure worksheets →
Or all English worksheets: every grade, every topic.