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should的用法
分类:语法详解 作者:本站原创

should的用法详解:
1.“should应该” 
肯定:should + V原   应该做某事
否定:shouldn’t = should not 
should没有人称和数的变化。
即,不管主语是否三单,should都保持不变。
I should go. He should go. 

2.should表示征求意见
What should we do? 我们该怎么办呢?
Should we go now? 我们现在该走了吗?

3.表示给出建议
You should listen to her song. It's great.
你应该听听她的歌。(她的歌)很棒。
You are tired. You should have a rest.
你累了。你应该休息一会。

4.陈述理应做的正确的事情或明智的做法
Children shouldn't be allowed to drink wine.
儿童不应当被允许喝酒。
The murderer should be punished. 
凶手应当受到惩罚。

5.should可与 ought to 换用
ought to较正式,较少用。
ought to + V原
You should/ought to have a rest.
你应该休息一会。

ought to的否定 (否定式中常省略to):
ought not (to) = oughtn't (to)
You shouldn't / oughtn't come.

以上就是should的用法,同时须搞懂的知识:
had better用法

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英语语法基础--语法详解