shall,must,will,would,can,could,委婉程度怎么样,是不是用can最委婉,那shall呢

shall,must,will,would,can,could,委婉程度怎么样,是不是用can最委婉,那shall呢 will would ; shall should ; can could ; must need ; may migh 用can,could,may,might,must,should,shall,will,would填空 情态动词的用法can/could/may/might/will/would/shall/should/must/can' 情态动词造句can (could),may (might),must shall (should,will (would 请问情态动词should shall will would can could must need may have t 情态动词can、could；shall、should；will、would的区别 Will would; shall should ;can could区别和用法 用could表示委婉请求时答句用Yes,I can,那么用would表示委婉请求时答句用什么? 请英语高手回答.我想问下 May Must Can Shall Will 及过去式 Would Should Could 情态动词造句+意思,用can could may might should shall will would造句,越简单 can、will、would、shall、may、must等助动词具体怎么用,还有do和have,