作业帮情态动词造句can (could),may (might),must shall (should,will (would) need
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情态动词造句can (could),may (might),must shall (should,will (would) need
情态动词造句can (could),may (might),must shall (should,will (would) need
情态动词造句can (could),may (might),must shall (should,will (would) need
I can/could carry both suitcases.我可以搬动两个箱子.——表示能力
They can/could hardly have intended to do that.他们几乎不可能愿意做那事.——表示可能性
One can/could hardly blame you for being upset.没有人会因为你受挫而责怪你.——表示允许（可以用 may/might 取代）
May I take a swim?Yes,you may.我可以去游泳吗?是的,你可以.——表示许可（口语中可以用 can 取代）
I asked her if I might leave.我问她我可不可以离开.——表示许可（口语中可以用 could 取代）
It may rain this afternoon.今天下午可能会下雨.——表示比 can 弱的可能性.
I'm afraid it might rain tonight.我看今晚可能要下雨.—— 表示比 may 还要不太确定的可能性
We must keep our word.我们必须遵守诺言.——表示有义务,相当于汉语的“必须”
You must be very tired.你一定很累了.——表示推测,相当于汉语的“必定”
We shall arrive tomorrow.我们明天到.——表示将来
You shall leave now.你现在该离开了.——表示说话人的意愿
That day shall come.那一天总会来的.——表示推测
You should send her a note.你应该给她留一个条.——表示建议
I should think he would like to go.我倒是认为他愿意去.——表示一种委婉的说法
They will appear later.他们稍晚会露面.——表示单纯将来的可能性
He said he would come.他说他要来.——表示过去将来
Will you help me with this package?您愿意帮我搬一下这包裹吗?——表示主语的愿望
He would eat nothing.他什么也不愿吃.——表示主语的愿望
Niid we make the test?Yes,we must.我们需要做这个试验吗?是的,需要.（= Do we need to make the test?）
He need not have done it.他本不需要做这件事.(= He doesn't need to have done it)
If you need do your work at night,I can help you with it .如果你需要夜间做这件工作,我可以帮你完成.(= If you need to do your work at night,)
注：need 作为情态动词只能用于疑问句、否定句或条件状语从句,肯定句必须用 need to do.