must的否定是否等于don't have to

must的否定是否等于don't have to must的否定?must的否定是need't还是don't have to? 以must 开头的疑问句,否定回答是 needn't,don't have to可以吗? --that car must have cost a lot of money.--on,no._________请问否定回答用 it didn't 还是用 it can't.不过记得是这样的 must have v-ed 否定形式为：can’t / couldn’t have v-ed,为什么又用it didn't 还是与can't/couldn't hav 请问must的一般疑问句的否定回答可以是：No,I don't have to don't的否定形式 must的否定形式和need的否定形式用法must的否定形式,什么时候用mustn't,什么情况用don't have to ,什么情况用needn't?need的否定形式,什么时候用needn't,什么情况用 don't need Must I finish the work today?的否定回答-Must I finish the work today?-No,you don't ____ ____(两空) why 否定的用法 why not 是不是等于why don't? 请问have not是否等于don't have 请问have not是否等于don't have i don't like either of 和i don't like both of them意义是否一样?i don't like both of them并不是他俩我都喜欢。这里的not是部分否定，否定的是both. Must I go to the supermarket now?的否定回答应用No,you mustn't.还是No,you don't have to.加原因. must的否定怎么看?eg:A:We always get home late for supper.B:You're right.So we ( ) be late this time.A.needn't B.mustn't C.don't need to D.don't have to must的否定形式有两种:must't和can't,needn't 这两种否定形式有啥不同啊? 有关why not的用法why not是否等于why don't we?why don't we是不是不常用？ have to 做谓语的一般疑问句,肯定回答和否定回答以下这两种形式是否都正确?请哪位大虾告知?例如：Do you have to take care of your father at home?肯定回答：Yes,I do..或者Yes,I must.否定回答：No,I don't.或 must的反义疑问句 是mustn't还是don't “must”的反义是不是“mustn't”?为什么“must”开头的句子否定回答是“needn't”?