must的否定形式为什么是can't

must的否定形式为什么是can't 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? We must hand in the exercises ,________ 反义疑问句must的否定形式不是can't吗 must的否定形式 There must be something wrong with the watch,()?为什么是isn't there?不是应该为There must 的否定形式吗?就是needn't there?就像there will be 的句式一样,反义疑问句是won't there? --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 can be 我知道can't be 一定不是 是must be 一定是的否定形式 must否定形式是mustn't? must be +表语 的否定形式是什么 为什么书上说要用can代替must can的否定形式 Must you cut your hair at Spring Festival?（否定回答）答案为什么是 No,you can't.不应该是 No,you needn't吗? 情态动词can,may,must的肯定形式和否定形式是什么 有关must否定你不能吃油腻的食物：You mustn't eat rich food.我记得must还有一种否定是can't.请问各位must否定形式在何种情况下用can't在何种情况下在后面加not呢? may,might,can,could的四个区别.must‘t,can’t的区别.①什么时候用may,might,can,could.②must‘t,can’t的区别③may,need,must在不同句式中的否定形式④什么时候用may/might 或can/could⑤什么时候用may be/might be must作为猜测 mustn't还能作为其否定形式,只能用can't be表示不可能了吗 英语祈使句 写上理由 书上写的是带主语的祈使句的否定形式 在主语前Don'tYou can't play with water,改为否定祈使句 为什么是Don't play with please.不是主语之前直接加Don't就行吗?为什么you can't 不见 i think he can speak English的否定句为什么是I don't think he can speak English i think he can speak English的否定句为什么是I don't think he can speak English