Semicolon or Comma? Worksheet: Practice punctuating sentences with commas and semicolons.

Let’s go through each sentence one by one. We need to decide if a comma or a semicolon should go in the blank.

Remember:
- Use a semicolon to join two complete sentences (independent clauses) that are closely related — especially when there’s no connecting word like “and” or “but”.
- Use a comma when you’re joining parts of a sentence that aren’t both complete thoughts, or when using words like “because,” “unless,” “if,” etc. (subordinating conjunctions), or with transitional words like “however” or “in fact” — but only if they come after a semicolon or start a new clause properly.

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1. *The artist preferred to paint in oils ___ he did not like watercolors.*
→ Both sides are complete sentences. No connecting word. → Semicolon

2. *Even when the house looks clean ___ there is usually a bunch of dirt swept under the rug.*
→ “Even when...” starts a dependent clause. The second part is the main idea. → Comma

3. *I’m going to leave early today ___ unless the boss comes back from the meeting.*
→ “Unless” introduces a condition — it’s not a full sentence on its own here. → Comma

4. *The computer can perform many calculations at once ___ however, it cannot reason like a human.*
→ “However” is a transition word between two complete ideas. When used this way, we use a semicolon before it and a comma after. → Semicolon

5. *In the first place, it was snowing too hard to see the road ___ in the second place, we had no chains.*
→ Two complete sentences joined without a conjunction. “In the first/second place” are just introductory phrases. → Semicolon

6. *Italy is my favorite foreign country ___ in fact, I plan on staying there for three weeks this summer.*
→ “In fact” is a transition phrase. First part is a complete sentence, second part is also complete. → Semicolon

7. *The challenges are not impossible ___ but they are very hard to clear.*
→ “But” is a coordinating conjunction. When you use “but” to join two complete sentences, you use a comma before it. → Comma

8. *I’m going to do all of my English homework every night ___ because that’s how you get an “A”.*
→ “Because” introduces a reason — it’s not a full sentence by itself here. → Comma

9. *If he misses his appointment ___ he’ll have to wait another six months to see the dentist.*
→ “If” starts a dependent clause. Main clause follows. → Comma

10. *There are many negative side effects to smoking ___ there are no positive side effects from smoking.*
→ Two complete sentences, no connecting word. → Semicolon

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Now, for the “Give it a shot” section — write 6 original sentences using semicolons correctly.

Here are some examples:

1. I love reading mystery novels; they keep me guessing until the end.
2. She didn’t study for the test; she still managed to pass.
3. It started raining heavily; we decided to cancel the picnic.
4. He forgot his keys again; now he’s locked out of the house.
5. My dog barks at every sound; sometimes it drives me crazy.
6. You can take the bus; or you can walk — either way works.

*(Note: In #6, “or” is optional — but since it’s joining two independent clauses, a semicolon before “or” is acceptable in informal writing. For strict grammar, you might use a comma + “or”, but semicolon is okay here for emphasis.)*

Actually, let’s fix #6 to be more clearly correct:

6. You can take the bus; walking is also an option.

Better!

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Final Answer:

1. ;
2. ,
3. ,
4. ;
5. ;
6. ;
7. ,
8. ,
9. ,
10. ;

Original Semicolon Sentences:

1. I love reading mystery novels; they keep me guessing until the end.
2. She didn’t study for the test; she still managed to pass.
3. It started raining heavily; we decided to cancel the picnic.
4. He forgot his keys again; now he’s locked out of the house.
5. My dog barks at every sound; sometimes it drives me crazy.
6. You can take the bus; walking is also an option.