if were not for

• 要不是； 要是没有 ... 的话

if 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. If he hadn't been ill, he might have gone.
   要不是生病他是可能去的。