百度作业网can't have been和must have been
来源：学生作业帮 编辑：百度作业网作业帮 分类：英语作业 时间：2024/07/08 17:53:47
can't have been和must have been
每一个的用法
每一个的用法
只要记住这:
must have been ...那时一定是can't have been...那时不可能是
再好好理解这几人句子,相信你就理解啦.
He can't have been ill.He must have been tired.
She can't have been forty.She must have been fifty.
He can't have been the youngest.He must have been the oldest.
He can't have been listening carefully.He must have been dreaming.
must have been ...那时一定是can't have been...那时不可能是
再好好理解这几人句子,相信你就理解啦.
He can't have been ill.He must have been tired.
She can't have been forty.She must have been fifty.
He can't have been the youngest.He must have been the oldest.
He can't have been listening carefully.He must have been dreaming.
can't have been和must have been
must have been和can't have been和现在完成时有没有联系啊
be,must be,can't have been,must have been吗
can't have been,must have been 结构里是不是不要把have been当现在完成时看,就把它
用must have been/done或can*t have been/done 改写句子
he can't have been Danish.he must have been Swedish.
She can't have been Danish. and She must have been Swedish.
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
He can't have been.He must have been.不是说单三用has吗?
选词填空（can't have been\must be\must have been\can't be \may ha
he can't haue been a dcntist.he must have been a doctor.