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情态动词should 的用法

2013-02-20 12:21 From 张艳

情态动词should的用法。一般用法表示“应该”。例如: You should live with joy.

表示建议命令等强烈语气的句子使用。It is necessary that you should live a cheerful life. should可以省略。

还有表示对将来的虚拟的时候也可以使用should。一般表示将来不太可能发生的事情。常用用在条件句中:If he should have enough time, he would go to your wedding. 如果他(将来)有时间,他就会去你的婚礼。(事实上没时间。 条件句可以倒装:Should he have enough time, he would go to your wedding.

还要一种情况是表示客气。例如写信的结尾经常会这样说:If you should need any help, do not hesitate to contact me. 倒装句就是:Should you need any help, do not hesitate to contact me. 也可以使用could。 If you could give me some detailed information, I would be grateful.