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外研版(2019)選擇性必修第一冊Unit 5 Revealing nature Using Language課件(共17張PPT)

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外研版(2019)選擇性必修第一冊Unit 5 Revealing nature Using Language課件(共17張PPT)

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(共17張PPT)
When I got to school, I realized that I had left my schoolbag at home.
Jack
坐下班車吧
?。?br/>Before I got to the bus station, the bus had left.
By the time I got back to school, the bell had rung.
a.Before I got to the bus station,the bus had left.
b.By the time I got back to school, the bell had rung.
Observe and say
got to the bus station
the bus had left
got back to school
the bell had rung
Past perfect:
had done
Grammar--Past perfect
教學重點:引導學生觀察例句,發現并總結過去完成時的規則。
教學難點:讓學生在真實語境中靈活使用過去完成時。
Focus on
基本用法
Past perfect
過去完成時
① 基本結構
② 基本用法
③ 常用固定句型
1. 過去完成時的構成為:
肯定式為__________________;
否定式為__________________;
被動式為__________________。
①I had finished my homework before I had supper.
②John and Jane had not known each other for a long time before they got married.
③The work had been finished by us last Friday.
had done
had not done
had been done
過去完成時的基本用法
1. 表示在過去的某一時間或某一動作之前完成的動作或存在的狀態。(過去的過去)
① Before we got to the train station, the train had already left.
我們到達火車站之前,火車就已經離開了。
② Before I could say “thank you”, he had run away.
我還沒來得及說謝謝,他就跑開了。
2.用于賓語從句。
主句中 know, realize, think, suppose, guess, find, discover, decide,remember,forget等用于一般過去時,如賓語從句中動作先于主句動作,通常過去完成時。
①We realized that we had lost our way.
我們意識到我們迷路了。
②We didn’t think about asking if she had passed her exam.
我沒想過問她是否考試及格了。
③Helen said that she had moved to another flat.
海倫說她已經搬到另一套公寓去了。
3.強調過去動作的完成 by then, by the end of, by the time。
① By the end of last term, we had learnt 2,000 English words.
到上學期期末為止,我們已經學習了2,000個英語單詞了。
②They had lived there for ten years by then.
到那時為止,他們已經在那住了10年了。
1) It/That was+ the first/ second…+ time+ that從句,從句謂語常用過去完成時。
It was the first time that I had visited the Great Wall.
這是我第一次參觀長城。
2) It was+一段時間+since從句,從句謂語用過去完成時。
It was three years since he had joined the army.
他參軍三年了。
4.過去完成時用于一些固定句型:
3) 在句型Hardly…when…和 No sooner…than…中,主句常用過去完成時,從句用一般過去時,表示“一……就……”。
① Hardly had he got into his big office when the telephone rang.
他剛進入他的大辦公室,電話鈴響了。
② No sooner had he arrived than he was asked to leave again.
他剛到就被要求離開。
4) 在句型If only, I’d rather 中,常見過去完成時,表示“要是...就好了”;“寧愿”。
①If only we had listened to their advice.
我們要是聽他的建議就好了。
②I’d rather you hadn’t been present.
我寧愿你當時不在場。
1.He ___________(learn) 3000 words before he went to England.
2.The old man told us that he__________ (travel) to many places.
3.It was the third time that he ___________ (see) such a large animal.
4. By the time he got to the airport,the plane ____________(take off)
5.Mary did her homework and_______ (wash) the dishes.
had learned
had travelled
had seen
had taken off
washed
過去的過去
賓語從句
It was the first time that
過去動作的完成
過去完成時和一般過去時的區別
1.意義不同
①When I arrived, she left.
②When I arrived, she had left.
(I arrived and then she left)
(She left before I arrived.)
2.起點不同
①He studied there two years ago.
②He said he had studied there three years ago.
(離現在兩年)
(離說話時兩年)
3.注意
表示過去時態并列的兩個或以上的動詞,一般用and,then, but 先后順序連接,一般用一般過去時。
He said he went to the shop and bought some food.
Summary
過去完成時主要用來表示在過去之前發生的事或做的動作,即過去的過去,通常與一般過去時連用。
結構: 肯定:
否定:
肯定被動:
3. 用于過去完成時的基本用法:
had done
had not done
had been done
(1).過去的過去。
(2).用于賓語從句。
(3).強調過去動作的完成。
(4).固定句式
(1)By the end of last year, he  ____   (collect)
more than 10 foreign stamps.
(2)He said that great changes       (take)
place in his hometown since 1990.
(3)This was the second time that the musician
___________(tour)Europe.
(4)He      (work) as a lecturer two years
ago, but now he is a manager.
(5)When the police found him, the criminal
__________ (be) in the cave for nearly a month.
(6)He       (hope) to catch the 8:00 bus, but
he found it gone.
had collected
had taken
had toured
worked
had been
had hoped

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