《Past and Present》PPT课件(第4课时)

牛津译林版八年级英语下册《Past and Present》PPT课件(第4课时)，共18页。

Present perfect tense 现在完成时

1．含义：

(1) 表示过去发生的事持续到现在；

(2) 表示过去发生的事情对现在产生影响。

eg：Mr Wang has lived here since he came to Anhui.

自王先生来到安徽，他就住在这儿了。

I have lost my mobile phone.   我的手机丢了。

2．构成：have/ has(＋not)＋动词的过去分词。

eg：He has not returned the book to me yet.

他还没有把书还给我。

She has never seen this film.

她从没看过这部电影。

3. 动词的过去分词

a.一般直接在词尾加­ed

b.以不发音的字母­e结尾的词直接加­d

c.以“辅音字母＋­y”结尾的词，变­y为­i，再加

d.以“元音字母＋­y”结尾的词，直接加­ed

e.以“元音字母＋一个辅音字母”结尾的重读闭音节词，先双写这个辅音字母，再加­ed

4．常用时间状语：

just 刚刚；

yet 用于疑问句，表示“已经”，用于否定句表“还”；

ever 曾经；

already 用于陈述句，表示“已经”，否定句中改为yet；never 用在句中表示否定，从未，从不；

recently 近来，最近。

一、用所给词的适当形式填空

1. I ___________(study) in America for over three years.

2. The young man __________(live) alone since he graduated from college.(兰州)

3. This is the best film that I __________(see) so far.

4. —Hello. Can I speak to Miss Brown?

—Sorry, she __________( fly) to Canada already. She’ll be back in a week.

5. In the past two weeks, the artist __________(draw) many pictures about his hometown.

6. I __________( know) Jimmy for over two days and now we are good friends.

7. —Why are the windows so dirty?

—Because we _____________( not clean) them for a long time.

8. My life __________( change) a lot in the past few years.(枣庄改编)

二、单项选择

9. —Dave，we will leave in 10 minutes. Are you ready?

—No，I________ our guidebook and towels yet.(玉林)

A. don’t pack         B. didn’t pack

C. have packed      D. haven’t packed

10. The singers ________ many concerts in the countryside since 2001.(湘潭)

A. hold                  B. held                 C. have held

11. —Have you finished your homework?

—________. Just half of it. How about you？(苏州)

A. Not at all            B. Not likely     

C. Not a bit            D. Not yet

12. Ann is a nurse in our hospital. She______ here for ten years.

A. works               B. has worked     

C. worked             D. was working

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