添must或mustn't.

添must或mustn't. we什么work hard用must或mustn‘t填 用must或mustn't,can或cannot……讨论中国和其他国家的习俗 must否定形式是mustn't? must 和mustn't有区别吗? 情态动词must与need可能互换吗?新概念第二册41课,我觉得need与must可以互换,换了意思一样,我列出来：1,you needn't (或mustn't) be so rude about it2,We mustn't (或needn't) buy things we don't need.3,You needn't (或mustn 情态动词must与need可能互换吗?新概念第二册41课,我觉得need与must可以互换,换了意思一样,我列出来：1,you needn't (或mustn't) be so rude about it2,We mustn't (或needn't) buy things we don't need.3,You needn't (或mustn must,need,mustn't,needn't的用法? must not 的缩写是mustn’t还是musn’t? must的反义疑问句 是mustn't还是don't must的否定式是musn't还是mustn't you must keep off the grass; you mustn't pick the flowers; you mustn't litter. You mustn't do this (will/must) you?mustn't 表示“不许”时 He really must go now_________?反义疑问句He really must go now__________?A.must he B.doesn't he C.mustn't he D.must he答案给的是A,可是为什么不是B或C呢? 班级规章制度（英语）最好用must或mustn's you mustn't smoke here,must you?翻译 用must和mustn't造句 各造五个句子! you must和you mustn’t造句各造五个!