Module 2 Unit 3 Language in use课件(共21张PPT) 外研版英语八年级下册

(共21张PPT)
Module 2 Experiences
Unit 3
Language in use
现在完成时的主要用法
表示过去发生的某一动作对现在造成的影响或结果。
表示过去已经开始，持续到现在的动作或状态。
1.表示过去发生的某一动作对现在造成的影响或结果。（常与just, already, yet,ever, never,before 连用，强调过去的动作和现在的联系，不强调动作的延续，肯定句用already, 疑问句用yet)
(1).--It 's so dark.
--Someone has turned off the light.
(2). I've just finished my homework.
2.动作开始在过去，持续到现在甚至将来,通常和for 或since 引导的时间状语连用
I have lived here for 4 years.
I have lived here since 2019/ 4 years ago.
(since +过去的时间点； for +一段时间)
我已经学了10多年的英语。
I have learned English for more than 10 years.
I have learned English since 10 years ago.
since 后面带过去时间或有一般过去时的句子
Tom hasn't played basketball since he left school ten years ago.
自从十年前离开学校， 汤姆就没打过篮球。
since +时间点
自1994年以来我们一直住在这里。
We've lived here since 1994.
for + 时间段
我们认识已有十年。
We have known each other for 10 years.
taken
has been
left
made
have had
has
have been
has gone
has read
has taught
have
met
have been 与 have gone
have been to 表示曾经去过某处，已经回来。
have gone to 表示已经去了某地，现在人可能在去的途中或已在那了。
have been in 呆在某处一段时间。
Tips：have been in住在、待在某地一段时间。
Mike and his parents in the north for half a year.
Mum is not at home now. She the shop.
you ever Kunming --Never.
Where you these days
We Beijing twice.
have been in
has gone to
Have
been to
have
been
have been to
用have been to, have gone to, have been in，have been 填空
一些动词不能和 for 或 since 连用。
He has bought the book.
He has bought the book for a week.
He has had the book for a week.
She has bought the Huawei Phone for two years.
How long have you come to the Xi'an
Mr. Zhang has gone to China since three months ago.
I have left Haikou for eight years.
I have borrowed the dictionary since 3 days ago.
The film has begun for 10 minutes.
The concert has finished for half an hour.
His dog has died for two years.
找出错误并改正
现在完成时动词构成：
主语+have/has +v.过去分词
过去分词的规则变化
过去分词的不规则变化
I, finish, homework
肯定句
I have finished my homework.
否定句
I haven't finished my homework.
Have you finished your homework
Yes, I have./ No, I haven't.
疑问句