Section A. A compound sentence is two simple sentences joined with a comma and one of the FANBOYS. Decide if each sentence below is a true compound sentence. If it is a compound sentence, put a comma before the conjunction. If it is not a compound sentence, write NO.
1. I bought a dog but he ran away.
2. The dog was black and brown with a white tail.
3. I bought a dog bed and some food.
4. The dog barks at my cat and the cat runs away.
5. I put the cat outside so my dog would stop barking.
6. My mom likes my cat but my dad likes the dog.
Section B: Each of these sentences is a complex sentence because it begins with a subordinate conjunction. Put a comma at the end of each subordinate clause in the sentence.
7. Because it’s Monday we have to go to school.
8. While I was watching television the power went out.
9. If if drop this brick will you pick it up?
10. Since I don’t have enough money for lunch I will have to be hungry.
11. After I wash the car I have to mow the lawn.
12. Although it’s a warm day I don’t want to go swimming.
13. Until the pool gets cleaned we can’t use it.
14. When winter comes we put a cover on the pool.
15. Unless you have any better ideas I think we should go home.
Answers: 1 ,but 2 NO 3 NO 4 ,and 5 ,so 6 ,but 7 Monday, we 8 television, the 9 brick, will 10 lunch, I 11 car, I 12 day, I 13 cleaned, we 14 comes, we 15 ideas, I