1. Unless she hurries, she'll be late.

2. Unless we had more rain, our crops would not be better.

3. Unless you like this one, I will bring you another.

4. Unless you are careful, you will cut yourself with that knife.

5. Unless I have a quiet room, I won't be able to do any work.

6. Unless the flood had risen higher, the flood would not have been ruined.

7. Unless you had sneezed, he would not have known that we were there.

8. Unless she did her hair differently, she would not look nice.

9. Unless John had played for our football team, we would have lost the game.

10. Unless I won the first prize in a lottery, I'd not give up my job.

1. If she doesn’t hurry, she’ll be late. 

=> Unless she hurries, she’ll be late. 
2. If we had more rain, our crops would be better. 

=> Unless we had more rain, our crops wouldn't be better. 
3. If you don’t like this one, I will bring you another.

=> Unless you like this one, I will bring you another.
4. If you are not careful, you will cut yourself with that knife.
=> Unless you are careful, you will cut yourself with that knife.

5. I’ll be able to do any work if I do now have a quiet room.
=> I won't be able to do any work unless I do now have a quiet room.
6. The flood would have been ruined if the flood had risen higher.
=> The flood wouldn't have been ruined unless the flood had risen higher.
7. If you hadn’t sneezed, he wouldn’t have known that we were there.
=> Unless you had sneezed, he wouldn’t have known that we were there.
8. If she did her hair differently, she would look quite nice.
=> Unless she did her hair differently, she wouldn't look quite nice.
9. If John had played for our football team, we would not have lost the game.
=> Unless John had played for our football team, we would have lost the game.
10. If I won the first prize in a lottery, I’d give up my job.

=> Unless I won the first prize in a lottery, I’d not give up my job.