高一英语friendship教案4

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（1）       must have done  对过去发生事情的肯定推测。“一定……“
（2）       could have done 过去可能做却未做。“本来可以做……”
（3）       might / may have done 过去可能做了某事（可能性小）。“可能已经……”
（4）       would have done 过去愿意做某事却不能做。“本来想要做……”
（5）       shouldn’t oughtn’t to +have done 本来不该做却做了。
（6）       should / ought to have done 应该做某事却没做。
（7）       can’t / couldn’t have done 对过去发生事情的否定推测。“一定没有……”
（8）       needn’t have done 过去没有必要做却做了。
6．…it was the first time in a year and a half that I’d seen the night face to face
这是我一年半以来第一次目睹夜晚….

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www.yf1234.com 句式：it / this / that +is(was) +the first /the second /….time sb has( had) done sth …
“某人第一次/二次/……次做某事。注意从句的谓语动词常用现在完成时或过去完成时。Is与has /have 对应；was 与 had done对应。
It is the second time that john has held an art exhibition.
It was the third time that she had come to this mountain village to see the children.
7. I am having some trouble with my classmates at the moment.
词组：have some / a lot of trouble with sb./ sth.意思为“同某人闹意见/矛盾；做 …….有困难。”
Trouble 在这里是不可数名词。
Do you have any trouble with your English study?
用法拓展：（1）be in trouble处于困境中
（2）have trouble in sth. / in doing sth.在……./ 在做某事方面有困难
 

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高一英语friendship教案4