it were not for

• 要不是； 如果没有； 除 ... 之外

it were not for的用法和样例：

例句

1. If it were not for friction, you could not walk.
   要不是由于摩擦，你就不能行走。
2. I do not know what I shall do without your help.
   要不是您的帮助，我真不知道该怎么办。
3. If it were not for the rock, we would have drowned.
   如果没有那块岩石，我们就被淹死了。
4. I can't read it without a dictionary.
   如果没有词典，我不能读它。
5. They were refused entrance to the theater.
   他们被拒於戏院大门之外。
6. Other than the preface, it consists of four parts.
   除引言之外，全文由四部分构成。