GCT英语语法——情态动词（二）

文章作者 100test 发表时间 2007:03:31 17:54:32
来源 100Test.Com百考试题网

二、特殊情态动词

除了上述的基本情态动词之外，还有一些如would rather, would sooner, would (just) as soon, had rather, had better, had sooner, can not but, may (just) as well等可用作情态动词。

The soldier would sooner die than surrender. 这个战士宁死不降。

If you don’t like to swim, you may just as well stay at home.

如果你不喜欢游泳，你也可以待在家里啊。

这些短语后一般直接跟动词原形。但是当would (had) rather, would (had) sooner, would (just) as soon后可跟that 引导的从句时，从句就要用虚拟语气。对现在和将来的假设用过去时，对过去的假设用过去完成时。例如：

I would rather you went home right now.我倒宁愿你现在立刻回家去。

I would sooner you hadn’t asked me to speak yesterday. 我倒宁愿你昨天没邀请我讲话。

三、情态动词中应特别注意的典的型结构

They must be in the library, aren’t they? 他们一定还在图书馆，对吧？

They must have gone to the library, haven’t they? 他们一定去图书馆了，对吧？

They must have been to the library yesterday, didn’t they?

他们昨天一定去了图书馆，是不是？

Let me do it, will you? 让我来做，好么？

Let me help you, may I? 请让我帮你，可以吗？

Don’t move, will you? 请你别动！

Go quickly, can you? 你能不能快点？

Let’s go for a walk, shall we? 咱们去散步，好么？

He used to live in the countryside, didn’t/usedn’t he? 他过去住在农村，对吧？