Sentence structure worksheet for identifying simple, compound, and complex sentences.

Here's the solution to the worksheet, with each sentence classified as Simple, Compound, or Complex, along with a clear explanation for each.

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1. The mountains are beautiful and I really want to live there.
✔ Compound Sentence

*Explanation:* This sentence contains two independent clauses joined by the coordinating conjunction “and”:
- Clause 1: “The mountains are beautiful”
- Clause 2: “I really want to live there”
Each clause can stand alone as a complete sentence → Compound.

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2. We wanted to go to the movies.
✔ Simple Sentence

*Explanation:* Only one independent clause. No dependent clauses or additional independent clauses. Subject = “We”, verb = “wanted”, object = “to go to the movies”. → Simple.

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3. We need more safety lessons because they forget the rules.
✔ Complex Sentence

*Explanation:* One independent clause (“We need more safety lessons”) + one dependent clause (“because they forget the rules”). The word “because” introduces the dependent clause. → Complex.

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4. The men painted the house all day.
✔ Simple Sentence

*Explanation:* One subject (“The men”), one verb (“painted”), one object (“the house”), and an adverbial phrase (“all day”). Still only one independent clause → Simple.

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5. The birds flew through the air before the storm rolled in.
✔ Complex Sentence

*Explanation:* Independent clause: “The birds flew through the air”
Dependent clause: “before the storm rolled in” (starts with subordinating conjunction “before”)
→ Complex.

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6. My mother bought me a new dress but I did not like it very much.
✔ Compound Sentence

*Explanation:* Two independent clauses joined by “but”:
- Clause 1: “My mother bought me a new dress”
- Clause 2: “I did not like it very much”
Each can stand alone → Compound.

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7. We hiked the Seneca trail which made us very tired.
✔ Complex Sentence

*Explanation:* Main clause: “We hiked the Seneca trail”
Relative clause (dependent): “which made us very tired” — modifies “trail”.
“Which” is a relative pronoun introducing the dependent clause → Complex.

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8. Norman finished his work quickly and Josh brought in the pizza.
✔ Compound Sentence

*Explanation:* Two independent clauses joined by “and”:
- Clause 1: “Norman finished his work quickly”
- Clause 2: “Josh brought in the pizza”
Both are complete sentences → Compound.

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9. I set up the tent while the boys gathered firewood.
✔ Complex Sentence

*Explanation:* Independent clause: “I set up the tent”
Dependent clause: “while the boys gathered firewood” (subordinating conjunction “while”)
→ Complex.

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✔ Final Answers:

1. Compound
2. Simple
3. Complex
4. Simple
5. Complex
6. Compound
7. Complex
8. Compound
9. Complex

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📌 Quick Recap of Definitions:

- Simple Sentence: One independent clause.
- Compound Sentence: Two or more independent clauses joined by a coordinating conjunction (FANBOYS: for, and, nor, but, or, yet, so).
- Complex Sentence: One independent clause + at least one dependent clause (usually introduced by a subordinating conjunction like because, although, while, since, etc.).

Let me know if you’d like a printable version or flashcards for these concepts!