Compound Sentences worksheet for students to practice forming compound sentences with conjunctions.

Let’s go step by step to complete each sentence with a conjunction and a second independent clause.

Remember: A compound sentence has two complete thoughts (independent clauses) joined by a conjunction like and, but, so, or yet.

---

1. Those boys are triplets
→ We can add something that goes along with this fact. Let’s use “and” to add more info.
Example: *Those boys are triplets, and they all look exactly alike.*

2. Don showed up
→ Maybe he was late? Or maybe he surprised everyone? Let’s use “but” to show contrast.
Example: *Don showed up, but he forgot his homework.*

3. The window is broken
→ Why is it broken? What happened next? Let’s use “so” to show result.
Example: *The window is broken, so we need to call the repairman.*

4. My dog is feisty
→ Feisty means energetic or spunky. Let’s use “yet” to show something surprising.
Example: *My dog is feisty, yet she loves to cuddle on the couch.*

Now for the ones where the conjunction is given:

5. yet → We need to start with an independent clause, then add “yet” + another clause.
Example: *She studied hard, yet she didn’t pass the test.*

6. but → Start with one idea, then contrast it.
Example: *I wanted to go outside, but it started raining.*

7. so → Show cause and effect.
Example: *It was very hot, so we went swimming.*

---

Final Answer:

1. Those boys are triplets, and they all have the same birthday.
2. Don showed up, but he was an hour late.
3. The window is broken, so we can’t open it.
4. My dog is feisty, yet she sleeps all day.
5. She practiced every day, yet she still made mistakes.
6. I wanted ice cream, but the store was closed.
7. He forgot his umbrella, so he got soaked in the rain.