文档介绍：该【情态动词完成时的推测 】是由【54156456】上传分享，文档一共【41】页，该文档可以免费在线阅读，需要了解更多关于【情态动词完成时的推测 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。Why is the road
so wet?
It must have rained
last night.
Where are the girls?
Can they have gone home?
No, they can’t have gone home.
It’s so early.
-Look, the lights are off in their room.
添加标题
-Where have they gone?
添加标题
-They might have gone to the cinema.
添加标题
Here is a doll for your daughter.
Thank you so much. It’s beautiful. But you needn’t have bought it. She has so many at home.
Finding the rule
Believing what happened in the past is the case (used only in positive sentences)
indicating that something was a possibility in the past , though it did not actually happen (negative or interrogative sentences)
Suggesting that it is possible that something happened or was true (used only in positive/ negative sentences)
indicating that something did not / did happen, but the speaker wishes it had (not) happened.
indicating that it is not necessary for sb. to do sth, though he / she did it.
must have done
对过去的非常肯定的
推测
（语气最强）