should can may would could 有什么区别

should表示“应该做...”，can表示“能够做...”，may表示"有可能做..."，would表示“将要做...”，蕴含潜在的可能性，could是can的过去式，同时也是can的委婉表达法。

will、would、shall、should、may这些词有什么区别呀、感觉都是请求别人的意思呀

The verb should is more definite/urgent than may.

In some cases, the verb may is interchangeable with should i.e. In most of user guide, the instruction says - you may copy these files in order to do something; or you may shutdown the computer in order to refresh the system - the MAY - means you have to do so!!!

will 用于一般将来时用，基本用于所有人称。

意思是: 将要 He will go on studying after graduation.

would

1.将要,过去将来时,He would go on studying when he had graduated.

2.过去常常会 He would go fishing at that time.他那时经常去钓鱼.

3 固定用法 would like 和want 意思和用法相同

shall

将要,一般将来时,用于主语是第一人称的时候 I shall...或者we shall...

should

1.将要shall的过去时 ,用法同shall

2.“应该”,主语随便是第一二三人称,都可以,较常用.属于情态动词，后跟动词原形。

may 可以,语气比can弱.

注意,May I come in?(委婉地问,表示谦虚,客气)回答不是yes,you may.而是yes,you can(回答的人就不要见外了).

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