Simple, Compound, Complex Sentences: Worksheet and Sentence ... - Free Printable

Sure! Let’s go through each sentence in the worksheet and classify it as Simple (S), Compound (C), or Complex (CD).

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🔍 Definitions:

- Simple Sentence (S): One independent clause (one subject + one verb), no dependent clauses.
- Compound Sentence (C): Two or more independent clauses joined by a coordinating conjunction (FANBOYS: for, and, nor, but, or, yet, so) or a semicolon.
- Complex Sentence (CD): One independent clause + at least one dependent (subordinate) clause. Dependent clauses often start with subordinating conjunctions like *because, although, when, if, since, while*, etc.

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✔ Worksheet Answers:

1. The lead in my pencil broke, but I can use this pen.
→ C (Compound) — Two independent clauses joined by “but”.

2. You need to take a shower before you go to bed tonight.
→ CD (Complex) — “You need to take a shower” (independent) + “before you go to bed tonight” (dependent adverbial clause).

3. I want to give my grandma a gift for her birthday.
→ S (Simple) — One subject (“I”) + one verb (“want”) + infinitive phrase. Still one independent clause.

4. I lost my tooth while I was eating an apple today!
→ CD (Complex) — “I lost my tooth” (independent) + “while I was eating an apple today” (dependent clause starting with “while”).

5. As soon as Gina finished planting her flowers, it started to rain.
→ CD (Complex) — “it started to rain” (independent) + “As soon as Gina finished planting her flowers” (dependent clause).

6. Quinn and her dad share the same birthday.
→ S (Simple) — One subject (“Quinn and her dad”) + one verb (“share”). Compound subject, still simple sentence.

7. My library book was overdue, so I had to pay a fine.
→ C (Compound) — Two independent clauses joined by “so”.

8. Track is Mason’s least favorite sport, yet it’s the sport he most excels at.
→ C (Compound) — Two independent clauses joined by “yet”.

9. Unless I receive an email from 2B by tomorrow morning, I am going to proceed with planning the party myself.
→ CD (Complex) — “I am going to proceed...” (independent) + “Unless I receive an email...” (dependent clause starting with “Unless”).

10. After roasting marshmallows by the campfire, Lee told ghost stories.
→ S (Simple) — “Lee told ghost stories” is the main clause. “After roasting...” is a prepositional phrase (not a full clause — no subject/verb combo). So it’s still a simple sentence.

> ⚠️ Note: Some might argue #10 is complex, but “After roasting marshmallows...” is not a clause — it’s a participial phrase. No subject + verb → not a dependent clause → still Simple.

11. I have an announcement to make when everyone arrives.
→ CD (Complex) — “I have an announcement to make” (independent) + “when everyone arrives” (dependent clause).

12. Although Leo was forbidden, he refused to eat the stew.
→ CD (Complex) — “he refused to eat the stew” (independent) + “Although Leo was forbidden” (dependent clause).

13. If we don’t quiet down, my mom will never let me have a slumber party again.
→ CD (Complex) — “my mom will never let me...” (independent) + “If we don’t quiet down” (dependent clause).

14. The baby was cranky, so I put her down for a nap.
→ C (Compound) — Two independent clauses joined by “so”.

15. I can no longer eat sticky foods like licorice, for I have braces now.
→ C (Compound) — Two independent clauses joined by “for” (a coordinating conjunction).

16. Although I suspected I was wrong, I refused to admit my mistake.
→ CD (Complex) — “I refused to admit my mistake” (independent) + “Although I suspected I was wrong” (dependent clause).

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📝 Final Answer Key:

1. C
2. CD
3. S
4. CD
5. CD
6. S
7. C
8. C
9. CD
10. S
11. CD
12. CD
13. CD
14. C
15. C
16. CD

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✔ You’re all set! This worksheet helps students recognize sentence structures — a key skill in grammar and writing. Let me know if you’d like explanations for any specific sentence!