各個(gè)情態(tài)動(dòng)詞的區(qū)別:can,must,need,ought to,be able to ,would,will,shall,should,may,may be,have to

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can能....,must必須....(一般來(lái)說(shuō)是主動(dòng),自覺(jué)的必須),need需要去干....,ought to應(yīng)該,be able to有能力去干,能辦到.... ,would應(yīng)該(有義務(wù)的),will將要去干,shall可以,should應(yīng)該(能力上可以的),may可能,may be可能是,have to必須(被迫,不得不)