Section A: Decide if each sentence is compound (two independent clauses combined) or complex (a subordinate clause attached to an independent clause).
1. If you are finished eating, I will wash the dishes.
2. The dog is in the yard, but I can’t find the cat.
3. I enjoy a good book, and I know you do, too.
4. After the rain stops, I need to take a walk.
5. Be careful with plate, or you might drop it.
6. You can rest on the porch while I do the laundry.
7. Dad will be late because the train broke down.
Section B: Decide whether or not each sentence needs a comma.
8. If it rains the game will be postponed.
9. While the sun is shining we should wash the car.
10. I can drive you home since I don’t have practice today.
11. I want to see that movie because I heard the actors are good.
12. I will invite my brother and you can invite your cousin.
Answers: 1- complex; 2-compound; 3-compound; 4-complex; 5-compound; 6-complex; 7-complex; 8-comma after rains; 9-comma after shining; 10-no comma; 11-no comma; 12-comma after brother.