一、句型介绍
这是两个很常用的虚拟语气句型,其意为若不是(有)、要不是有。如:
If it werent for water, no plant could grow. 要是没有水植物就无法生长。
If it hadnt been for the doctor, he would have died. 要不是医生救了他,他就会死了。
二、用法说明
(1) 此句型有时可用but for, without等替换。如:
If it hadnt been for [But for, Without] your assistance we wouldnt have succeeded. 要不是有你帮忙,我们是不会成功的。
(2) 原则上说,if it werent [wasnt] for 用于谈论现在的情况,而if it hadnt been for 用于谈论过去的情况。但实际上if it werent [wasnt] for有时也可用于谈论过去的情况。如:
If it were not for their help, we couldnt have got over the difficulties. 要不是他们帮助,这些困难我们是克服不了的。
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