用can't have been造句!

用can't have been造句! 用have been造句 用must have been/done或can*t have been/done 改写句子 用（can't ） （ have been/done ） （must have been /done） 改写句子 用can't have been/done must have been /done 改写句子 can't have been和must have been He can't have been ill. 关于can't have been的句子 英语翻译A.can't have been B.mustn't have been C.shouldn't have b 英语造句用must（表必须和推测两种用法）,must have been（对过去情况推测）,can't(表能力和推测两种 用must,can,can't,needn't,has to,have to,had to,will,造句 can’t have been与couldn’t have been的区别?