would/could/must have done在虚拟语气中怎么用?

could/might/may/would/must/should have+过去分词 could be /must be/ should be/would be的区别 情态动词大聚会（should,need,must,will,can,could,hav to,may,would)1.____ we go now,Mr Li——Yes,you can2.You have tried your best,so you __(not)worry about it.3.Remember to come here on time.——I __4.There is something wrong with the door would,could, 怎么回答以can,may,must,could,might,would这些开头的问句? 情态动词造句can (could),may (might),must shall (should,will (would) need should may might would could can ought to must 语气强弱程度 should must can could will would may might情态动词造句拜托了··· would/could/must have done在虚拟语气中怎么用? which would you like to have,juice or coffee?either____be fine.A.can b.could c would d must原因 i believe he ____an accident ,otherwise he would have arrived on time为什么选must have had could/would/should/must have done 有什么区别, They who can't do as they would ,must do as theyThey who can't do as they would ,must do as they could.翻译 will would ; shall should ; can could ; must need ; may might以上每组有什么区别,分别应用在什么时候? A:_____I go and get some sugar?B:Yes,please A Must B Shall B Could C Would My dictionary has disappeared.who_have taken it?A.should B must C.could D.would 选什么 为什么 shall,must,will,would,can,could,委婉程度怎么样,是不是用can最委婉,那shall呢 let's hurry. they ________ be waiting for us. A.must B.could C.can D.would You _____ not have seen her yesterday,for she was abroad.A.must B.should C.could D.would