1. Unless he takes more care, he'll have an accident.

2. Unless it rains soon, the crops will be ruined.

3. If the weather isn't fine, we'll stay at home.

4. If I didn't get my work finished, I can't go with you.

5. Unless you leave on the 15th, you’ll get home late for your mother’s party.

6. If Tom's father doesn't tell him what to do, he never does anything.

7. Unless you really want this job, don't take it.

8. Unless she does anything to prepare for the test, she will get bad marks.

9. If you don't get a visa, you can't visit the United States.

10. If you don't remember our address, you can find it in the phone book.

1. If he doesn’t take more care, he’ll have an accident

⇒ Unless he takes more care, he'll have an accident.
2. The crops will be ruined if it doesn’t rain soon

⇒  Unless it rains soon, the crops will be ruined.
3. Unless the weather is fine, we’ll stay at home.

⇒  If the weather isn't fine, we'll stay at home.
4. I can’t go with you unless I get my work finished

⇒ If I didn't get my work finished, I can't go with you.
5. If you don’t leave on the 15th , you’ll get home late for your mother’s party.

⇒ Unless you leave on the 15th, you’ll get home late for your mother’s party.
6. Tom never does anything unless his father tells him what to do.

⇒ If Tom's father doesn't tell him what to do, he never does anything.
7. Don’t take this job if you don’t really want it.

⇒  Unless you really want this job, don't take it.
8. If she does nothing to prepare for the test, she will get bad marks.

⇒ Unless she does anything to prepare for the test, she will get bad marks.
9. You can’t visit the United States unless you get a visa.

⇒ If you don't get a visa, you can't visit the United States.
10. Unless you remember our address, you can find it in the phone book

⇒  If you don't remember our address, you can find it in the phone book

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