Sentence sorting worksheet for identifying complete and incomplete sentences.

Let’s go step by step to sort each sentence into “complete” or “incomplete.”

A complete sentence must have:
- A subject (who or what the sentence is about)
- A verb (what the subject is doing)
- And it should express a full thought — you shouldn’t be left wondering “what happened?” or “who did it?”

An incomplete sentence is missing one of those things — maybe no subject, maybe no verb, or it doesn’t make sense on its own.

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Let’s look at each phrase:

1. “The furry kitten.”
- Has a subject (“kitten”) but no verb. What did the kitten do? Nothing said.
→ Incomplete

2. “Planted a tree.”
- Has a verb (“planted”) and object (“a tree”), but who planted it? No subject.
→ Incomplete

3. “We dug.”
- Subject: “We”, Verb: “dug”. Full thought — we did something.
→ Complete

4. “She planted a flower.”
- Subject: “She”, Verb: “planted”, Object: “a flower”. Full thought.
→ Complete

5. “He picked up trash.”
- Subject: “He”, Verb: “picked up”, Object: “trash”. Full thought.
→ Complete

6. “In my backyard.”
- This is just a place. No subject, no verb. Where? In my backyard — but what happened there?
→ Incomplete

7. “My dog wagged his tail.”
- Subject: “My dog”, Verb: “wagged”, Object: “his tail”. Full thought.
→ Complete

8. “The dog barked.”
- Subject: “The dog”, Verb: “barked”. Full thought.
→ Complete

9. “On Earth Day.”
- Just a time/date. No subject, no verb. When? On Earth Day — but what happened?
→ Incomplete

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Now let’s put them in the right columns.

✔ Complete sentences:
- We dug.
- She planted a flower.
- He picked up trash.
- My dog wagged his tail.
- The dog barked.

✘ Incomplete sentences:
- The furry kitten.
- Planted a tree.
- In my backyard.
- On Earth Day.

Final Answer:
Complete:
- We dug.
- She planted a flower.
- He picked up trash.
- My dog wagged his tail.
- The dog barked.

Incomplete:
- The furry kitten.
- Planted a tree.
- In my backyard.
- On Earth Day.