1. If you are not careful, you will cut yourself with that knife.
=> unless you are careful, you will cut yourself with that knife.
2. If you do not like this one, I'll bring you another.
=> Unless you like this one, I'll bring you another.
3. I'll not be able to do any work if I do not have a quiet room.
=> unless i will be able to do any work if I do not have a quiet room.
4. If she does not hurry, she'll be late.
=> uunless she hurries,she'll be late.
5. If we had more rain, out crops would be better.
=> unless we had more rain, out crops wouldn't be better.
7. If you had not sneezed, he wouldn't have known that we were there.
=> unless you had sneezed, he wouldn't have known that we were there.

1. If you are not careful, you will cut yourself with that knife.
=> unless you are careful, you will cut yourself with that knife.
2. If you do not like this one, I'll bring you another.
=> Unless you like this one, I'll bring you another.
3. I'll not be able to do any work if I do not have a quiet room.
=> unless i will be able to do any work if I do not have a quiet room.
4. If she does not hurry, she'll be late.
=> uunless she hurries,she'll be late.
5. If we had more rain, out crops would be better.
=> unless we had more rain, out crops wouldn't be better.
7. If you had not sneezed, he wouldn't have known that we were there.
=> unless you had sneezed, he wouldn't have known that we were there.