为什么说will,can,shall这样的词是情态动词又说它们是助动词呢?到底什么情况是情态动词,什么情况是助动词,还是可以同时做情态动词又可以同时是助动词呢?请举例说明一下,不要给我一堆复制

...,do you?...,can ...will you?...shall it? ...,do you?...,can ...will you?...shall it? 为什么说will,can,shall这样的词是情态动词又说它们是助动词呢?到底什么情况是情态动词,什么情况是助动词,还是可以同时做情态动词又可以同时是助动词呢?请举例说明一下,不要给我一堆复制 Man die without water.A.will B.can C.need D.shall为什么选A 为什么will,shall.can.may没有过去分词和现在分词而有过去式 为什么can will shall must没有过去分词?must 过去式都没有. will,would,shall,should,can,could,.什么时候加be,什么时候不加..那...it will be done,和 i will be back,,这是动词,,,那为什么加, Will would; shall should ;can could区别和用法 I __________ not do my homework, said the boy.You __________, said his father.A.will,will B.shall,shall C.shall,will D.will,shall为什么 I will let you see the patient in an hour if you _____ wait here. A shall B will C can D should选哪个,为什么 Let’s...,＋shall we?Let us...,＋will you?Let＋第三人称．..,＋will you?为什么这样子呀 shall,must,will,would,can,could,委婉程度怎么样,是不是用can最委婉,那shall呢 一句语法分析shall we start at four?为什么不用can,如果你是老师,你怎么和学生说为什么不用can或者do,而要用shall呢? 请问语法对不对?If i can,I will love you forever.有人说can应该改成虚拟语气是不是这样 no student ---go out of school after eleven o'clock at night without the teacher's permissionA will B must C may D shall 选啥啊,最好说明理由,最好说明理由 shall 为什么这样用，A 为什么排除啊 Let’s play soccer, ________?A. will you B. won’t you C. shall we D. can you应该选哪个? 其余的为什么不对. --what can I do for you?-- if you__see Mr Black,give him regards.A should B would C shall D will为什么选A? 58.My little sister ____ six next month.A.will be B.shall be C.can be D.is going to 为什么选A,不选D