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Free Complete Sentences Worksheets

Worksheets for first and second graders on what makes a sentence complete: someone or something, and what they do. Every worksheet has an answer key.

What Is a Sentence? Chart printable preview

What Is a Sentence? Chart

Chart

The two parts every sentence needs, with an example of a group of words that is not a sentence yet.

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Is It a Sentence? printable preview

Is It a Sentence?

Grades 1–2

Eight groups of words: circle yes if it tells a whole idea and no if a part is missing. Answer key on page 2.

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The Two Parts printable preview

The Two Parts

Grades 1–2

Six sentences with picture clues. Circle who or what, and underline what they do. Answer key on page 2.

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Make It a Sentence printable preview

Make It a Sentence

Grades 1–2

Six groups of words with a part missing. Add words and write a whole sentence. Answer key on page 2.

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About these complete sentences worksheets

A complete sentence tells a whole idea. It names who or what the sentence is about and tells what that someone or something does or is. A group of words with one part missing is a fragment.

These worksheets use plain words for the two parts. The names subject and predicate come later, in the subject and predicate lesson for grades 3 and 4.

Frequently Asked Questions

What grade are these complete sentences worksheets for?
First and second grade. They come before any work on subjects and predicates.
What is a sentence fragment?
A group of words that is missing a part. "The big dog" does not tell what the dog did, and "ran to the bus" does not tell who ran.
Why do the fragments end with a period?
So that the period is not a clue. The child has to read the words and decide whether they tell a whole idea.