新概念英语第一册第130课【课文讲解】

世博英语Andy老师原创教程。未经世博英语书面授权，任何媒体和个人不得转载！

本课替换练习，我们主要训练使用must have been以及can’t have been.下面先看Andy和Joy作一个示范：

Joy: He must have been at home.
Andy: He can’t have been at home. He must have been at school.

下面开始替换练习

1) Joy: He must have been ill.
Andy: He can’t have been ill. He must have been tired.
2) Joy: It must have been your new hat.
Andy: It can’t have been my new hat. It must have been my old hat.
3) Joy: She must have been Danish.
Andy: She can’t have been Danish. She must have been Swedish.
4) Joy: He must have been a dentist.
Andy: He can’t have been a dentist. He must have been a doctor.
5) Joy: She must have been forty.
Andy: She can’t have been forty. She must have been fifty.
6) Joy: It must have been the 20th.
Andy: It can’t have been the 20th. It must have been the 21th.
7) Joy: He must have been the youngest.
Andy: He can’t have been the youngest. He must have been the oldest.
8) Joy: He must have been reading.
Andy: He can’t have been reading. He must have been sleeping.