外研版高中英语Book 1 Module 4 A Social Survey ---My neighborhood grammarPresent perfect tense教学课件 2.ppt

外研版高中英语Book 1 Module 4 A Social Survey ---My neighborhood grammarPresent perfect tense教学课件 2.ppt上一页
现在完成时
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思考几个问题：
1. 现在完成时与过去时的区别

？

二. 学
按要求完成学案上的任务
（1）~~ （4）（ 7分钟）.
Mother: John, clean your teeth please.
John: Mum, I have already cleaned them.
Mother: when did you do that ?
John: I had done before you came back.
John: 妈妈，我已经刷过了.
Mother :什么时候刷的？.
John: 您回来之前我就刷了。
三. 展
present(now)
future
past
现在完成时
( present perfect tense)
do my homework

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They have surveyed that matter since last year. It`s said it may refer to some key persons.
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____和_____
2. 表示过去已经开始且 ____________的动作或状态
影响
结果
持续到现在
I have ever been to the Summer Palace
I have never heard about so moving a story.
__________经历
从未有过的
曾有过的
二. 现在完成时的标志
◆常与① already, ② never,
③ ever, ④ just,
⑤ yet, ⑥ before,
⑦ up to now, ⑧ so far,
⑨ for a long time
⑩ these days,
⑾ since
⑿ for/in/during recent / the last /the past few
weeks等连用
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It ______ 6 weeks since I began to write
this story.
has been
have warned
have been to
has stopped
2. It`s the last time that I ___________（警告）you !
3. This is one of the most attractive places that I
______________（曾经去过的） .
4. Don`t get off the bus before it __________ well.
※非延续性动词是否有完成时？