mustn't 等于什么?除must not外
mustn't 等于什么?除must not外
must not 和mustn't有什么区别?还有can't和can not有什么区别?
mustn't=must not吗?看问题补充
mustn't 可以拆开变成must not么
添must或mustn't.
He must go填反义疑问句,是写mustn't he 还是does not he
We ______laugh at our classmates.A.must B.may not C.mustn't
May i go swimming now?no,you (mustn't/may not).YOU must fini
We are not allowed to touch it.We__touch it A.mustn't B.must
mustn‘t和must not分别解释是什么?通常怎么用?
must 和 have to 有什么不一样?mustn't 和 don't have有什么不一样?
may can must need的区别及may not ,can't,mustn't,needn't的区别?