We mustn't smoke here.改被动We____ _____ to somke here.

The sign No smoking means we mustn't smoke here No smoking means we mustn't smoke here为何是NO smoking 不能是Not smoke ,No smoking,Not smoking We mustn't smoke here.改被动We____ _____ to somke here. You mustn't smoke here.(改为祈使句) mustn't 等于什么?除must not外Your mustn't smoke here.（Don't smoke here) you mustn't smoke here,must you?翻译 you mustn't smoke here同义句 --------is not--------here you mustn't smoke here . ( ) ( ) here. 改为同义句 急用 The sign No smoking m____we mustn't smoke here Shall we have a smoke here?—No,we__,because the workers is carrying some petrol.这里为什不用can't为什么用mustn‘t？？ you mustn't smoke here的同义句改成( )smoke here,piease We （）tell her about it .She may have known it.A.don't have to B.mustn't we mustn't do that again -( )I smoke here?-No you mustn't.A.Can B.-( )I smoke here?-No you mustn't.A.Can B.May 选哪个 you ____ smoke填don't have to 还是mustn't You （）smoke when you see the sign.(needn't,mustn't) we ___ for her beause she never came.A needn't wait B shouldn't have waited C mustn't wait D mustn'tA为什么不对,这时needn't后跟动词原形跟came是过去式 也没关系? we ___ for her beause she never came.A needn't waitB shouldn't have waitedC mustn't waitD mustn't have waited个人觉得选A有came 说明说明了啊？本人基础不好~可以说清楚点不？