求问may.can.must.should的可能性.还有什么时候用could什么时候用can

must.should.can...need的区别,各什么时候用. could除了can的过去式还有什么理解 can could may must should的区别? 求用need,might,may,must,should,can,could,would,used to,is used may can must should could would should,would,could,must,might,may,can 一、请用情态动词（may、shall、should、can、can't、shouldn't、could、must、mus 用should,may,can,must填空 在那些选择题中,什么时候用need,must,could,may 用情态动词should,may,must,can,could,ought to 填空 用can,could,may,might,must,should,shall,will,would填空 用may,must,can,can't,should填空, 情态动词的用法can/could/may/might/will/would/shall/should/must/can'