Complex sentences worksheets
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.
By grade
What students need to know
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.
This skill runs from 3rd grade through 5th grade. Pick a grade above for level-matched sentences, teaching notes, and worksheets.
Complex sentences across the grades
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.
4th grade
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.
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.
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