1.shouldn't和mustn't的区别是什么?2.The children talked so loudly at dinner table that i had to struggle to be heard.(重在后半句)thank you for help!

needn't和 mustn't和shouldn't和ought't的区别? mayn't be ,can't be,mustn't be,shouldn't be的区别 英语情态动词区别There's no light on-they______be at home.为什么用can't 而不是 mustn't?You ___ play computer games before you finish your homework.是用mustn't 还是shouldn't?请说一下can't,mustn't 和shouldn't的区别,最好再 Can't 、mustn't 、shouldn't 的区别?（急）比如一句句子：He ______ be in the room,I didn't see him.莪知道要用can't,但是为什么呢?为什么不用mustn't 、shouldn't mustn't/needn't/shouldn't有什么区别?请举一些例句，方便我的理解， 1.shouldn't和mustn't的区别是什么?2.The children talked so loudly at dinner table that i had to struggle to be heard.(重在后半句)thank you for help! mustn't的用法? mustn't的用法 can’t mustn’t shouldn’t needn’t 在用法上怎么区别? can’t mustn’t shouldn’t needn’t 在用法上怎么区别? 回答shall,用needn't,mustn't,wouldn t,还是shouldn t couldn't和shouldn't的区别,急要 情态动词的can't和mustn't的区别 can`t与mustn`t意义和用法的区别 看一下这道题:mustn't和can't的区别? can‘t be 和mustn’t be的用法 转换成以can't或don't开头的 祈使句1.We shouldn't run in the classroom.2.We mustn't sleep in the class.3.You should not smork..4.You should not drink beer. shall 引导的疑问句否定回答用?Shall I tell Bob the news?No,you( )A shouldn’t B wouldn’t C mustn’t D needn’t