`-` Unless = If not: Nếu không

`-` Mệnh đề điều kiện có "If" ở thể phủ định `->`Mệnh đề điều kiện có "Unless" ở thể khẳng định, mệnh đề chính giữ nguyên.

`-` Mệnh đề điều kiện có "If" ở thể khẳng định `->` Khi chia với "Unless" mệnh đề điều kiện giữ nguyên, mệnh đề chính ở thể phủ định

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

`2`. Unless we had more rain, our crops wouldn't 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 do now have a quiet room, I won't be able to do any work.

`6.` Unless the flood had risen higher, the flood wouldn't have been ruined.

`7.` Unless you had sneezed, he wouldn't have known that we were there.

`8.` Unless she did her hair differently, she wouldn't look quite 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 wouldn't give up my job.