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初四unit6过去完成时态课件

发布时间:2013-10-31 10:36:10  

Welcome to our class!

Revision:一般过去式的用法
1)一般过去时表示过去某个时间发生的动作或 状态,常和表示过去的时间连用,yesterday, last night, in 1990, two days ago,just now,at that time等。 2)也表示过去经常或反复发生的动作,常和 often, always等表示频度的时间状语连用。

构成:主语+谓语(动词的一般过去式)+其


? ( )1. ______your father at work the day_____ yesterday(前天)﹖ ? A. Was; before ? B. Is; before ? C. Was; after D. Is; after

? ( )2. The twins______in Dalian last year. ? They______here now. ? A. are; were ? B. were; are ? C. was; are ? D. were; was

过去完成时态
Past perfect Tense

教学重、难点:

1.过去完成时的的巩固及运用。 2. 过去分词的构成。 3.与现在完成时的区别

定义:
过去完成时可以表示过去某一时刻 或某一动作之前完成的动作或呈现 的状态。也就是说发生在“过去的 过去”。

构成:had+过去分词

6:00

7:00

现在

By the time I got up, my sister had already washed all the clothes.

1.我到家时她已经睡了。 By the time I got home, she had already gone to bed.

2.到昨天晚上时消息已传遍全球。 By yesterday evening the news had spread through the world.

3.他走以后我找到了那封信。
I found the letter after he had gone away. 4.我们到电影院晚了,电影已经开始十分 钟了。 We reached the cinema late. The film had already been on for ten minutes.

过去分词的构成:

过去完成时的构成:由助动词 had + 动词的过去分词(V.pp)

1. 规则动词的变化 (regular verbs ): a) 一般情况下在动词后面加 ed work ------ worked play -------- played b) 以 e 结尾的动词直接加 d refuse ------ refused use ------ used c) 以辅音字母加 y 结尾的动词,把 y 改 i 再加 ed study ----- studied carry ----- carried d) 以重读闭音节结尾的,前面有单个元音字 母时,双写辅音字母,再加 ed stop ---- stopped drop ------- dropped admit - admitted beg-begged
drop; prefer; plan;

常用的时间状语等标志词:
1、by, before, when, by the time等构成的短语 或引导的从句。
Eg. 1)By the time she came to the bus stop, the bus had already gone. 2) We had finished the task before last midnight 3) When I arrived at the post office, I found that I had left the letter at home 4) After I had finished my homework, I went to bed.

2、 由said, told, knew, heard, thought 等引导的宾语从 句中。 Eg. He told me that he had heard of it. I thought my homework had been fininshed. But I didn’t.

3、 从过去开始, 一直持续到过去的另一时间 的动作、状态。常用since,for. Eg. She said that she had learned English for years since he came to our school 注意:瞬间动词不能和一段时间状语,及since,

for 引导的从句和短语连用。

构成:had+过去分词
肯定式:主语+had+p.p.+….
否定式: 主语+hadn’t+p.p.+…. 疑问式: Had+主语+p.p.+…?
肯定答语: Yes, 主语+had 否定答语: No, 主语+hadn’t

构成:had+过去分词
1:I had learnt 5000 English words by the end of last week. 2:I hadn’t learnt 5000 English words by the end of last week. 3:Had you learnt 5000 English words by the end of last week ? 4:How many English word had you learnt by the end of last week ?

1. The thief had run away before the police arrived. The thief hadn’t run away before the police arrived. Had the thief run away before the police arrived ? Who had run away before the police arrived ?

2. We had learnt 3 Chapters by the end of yesterday. We hadn’t learnt 3 chapters by the end of yesterday. Had you learnt 3 chapters by the end of yesterday ? What had you learnt by the end of yesterday ?
3. Henry had stayed in bed for a week before he went to school yesterday. Henry hadn’t stayed in bed for a week before he … Had Henry stayed in bed for a week before he went to school yesterday ? How long had Henry stayed in bed before he went to school yesterday ?

现在完成时和过去完成时的区别:
The differences between Present Perfect tense and Past Perfect tense.

(1) She has taught English for 6 years. (2) “Where is Susan” “She has gone to America”.

表示过去某时发 生的动作,这动 作可能刚刚停止, 也可能还在进行。

(1) She said she had 表示过去某 taught English for 时之前发生 6 years. 的动作。 (2) By the time I got to London, she had gone to America. 现在完成时: 主语 + have / has done 过去完成时: 主语 + had done

time
past 现在完成时 now

time

过去的过去
过去完成时

过去

现在

历届高考真题:
1:How long ____ you ____in the countryside before you came to our school? (2004年湖南对口招生) A:had……taught B:have……taught C:did…….teach D: are……teaching

2: How long ____ you ____the army before you came to our company?(2006年湖南对口招生) A: did…..join B: have …..joined C: had……been in D: have……been in

?3:The football match on TV _____ for half an hour. (2008年湖南 对口招生) ? A:has begun ? B:has been on ? C: began ? D:is begining

4:A moment ago, a policeman told me that he _____ my stolen motorbike in a village. (2009年湖南对口招生) A:has found B:had found C: was finding D: will find

5:When Jack arrived ,he learned Mary _____ for almost an hour(全 国对口招生) A; had gone B: had set off

C: had left
D: had been away

6:He _____more than 5,000 English words when he entered the university at the age of 15. (2005北 京卷) A.has learned B. would have learned B.C. learned D. had learned
分析:答案选 D。因为上大学是过去,学 了五千个英语单词是在上大学之前,即 “过去的过去”,所以用

过去完成时。

7. Father _____for London on business upon my arrival, so I didn’t see him. (2005福建卷) A.has left B. left C. was leaving D. had left
分析:答案选 D。根据“我没见到他”可知, “在我到达”前“父亲已经去伦敦”了,即父 亲去伦敦发生在“过去的过去”,故用过去完 成时。

Can you do it?
1. By yesterday morning, he ________(call) had called me ten times. 2. The patient ___________(die) when the had died doctor arrived. 3. I saw Lin Feng yesterday. We had not met ___________(not meet) each other for five years.

had borrowed 4. I returned the book that I___________(borrow). 5. He said that he ___________(know) her well. had known has been 6. The match ________(be) on for half an hour. 7. The match had been _______(be) on for half an hour when I got there. did 8. They ____(do) the work at 11 o’clock yesterday morning.

had done 9. They ________(do) the work by 11 o’clock yesterday morning. had left 10. The pop singers ___________(leave) when I got to the music hall last night. What a pity! 11. How clean the room is today! cleaned Oh, yes! Who _________(clean) it?

12.What were you doing when Jim phoned you? had finished I __________(finish) my homework and was starting to take a shower. 13. Have you ever been to Guilin? went Yes. I _________(go) there four months ago.


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