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Unit26 Emotions Period Three Grammar 课件(北师大版选修9,课标通用)
1.表示动作在说话之前已经完成,而后果或影响至今仍存在。
I have opened the window.(=I opened the window and the window is now open.)
我打开了窗户。
I have posted the photos.我邮了照片。
一、现在完成时 have/ has done
2.表示的动作开始于过去,持续到现在,也许还会持续下去。
I have studied English for 5 years.
我学习英语5年了。
So far he has read two English novels.
到目前为止,我已经读了两本小说了。
3.可用在时间和条件状语从句中,表示将来某时完成的动作。
He will come as soon as he has finished the homework.他一完成作业就会过来。
If it has stopped snowing in the morning,we'll go to the park.如果早晨雪停了,我们将去公园。
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