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为什么表示给予“许可”通常用can/may,而不用might/could.
更新时间2019-05-17 01:31:31
can 与 may 是情态动词。
can 是现在式 ; could 是过去式 :
can 永远是主动词, 而不能作为助动词, 如 : She can swim. Can she ?
could 可做主语, 但在虚拟语气 Subjunctive Mood 时, 也可作为助语词, 如 :
If I could cook food, I would ...
may 作为主语, 如 : She may be at home.
也可作为助语词, 如 : May you go in safety !
may 及 might 可作为将来词, 如 : I might go to Grade 1 Russian course next year.
I may sing to-morrow.