人教版九年级英语Unit12课件Section-A-3(Grammar-focus-4c).pptx--（课件中不含音视频）

1、把下列短语翻译成英语。把下列短语翻译成英语。1.即将即将 2.买杯买杯咖啡咖啡3.排队等候排队等候 4.起床起床5.出去出去 be about to get a coffee wait in line get up get outside 6.迟到7.在以前 8.(闹钟)发出响声9.开始做某事 10.捎一程be late forby the time go off start doing sth.give sb.a lift 1.To learn to understand the use of Past perfect tense2.To be able to write sentences

2、 using by the time or beforeWhat happened to you on a bad morning?First,I had slept when the clock went off.Then by the time I had breakfast,I had hurt my hand with a knife.Before I went to school,I had gone to the doctor.过去完成时的构成：肯定式为：助动词had+过去分词否定式为：had not+过去分词 had not缩写为hadnt过去完成时的用法：过去完成时的用法：1)

3、表示一个动作或状态在过去某一时间或动表示一个动作或状态在过去某一时间或动作之前已经完成，作之前已经完成，发生在发生在“过去的过去过去的过去”。这个过去的时间可以用。这个过去的时间可以用by，before等介等介词短语或者一个时间状语从句来表示。词短语或者一个时间状语从句来表示。e.g.When I woke up,it had stopped raining.(翻译翻译)我醒来时，雨已经停了。我醒来时，雨已经停了。2)表示某一动作或状态在过去某时之前已经表示某一动作或状态在过去某时之前已经开始，一直延续到这一过去的时间。开始，一直延续到这一过去的时间。常用常用表延续的时间状语如：表延续的时间状

4、语如：by the end of+过去的时间点，过去的时间点，by the time+从句等。从句等。e.g.By the end of last year,she had worked in the factory for twenty years.(翻译翻译)到去年年底，她已经在这家到去年年底，她已经在这家工厂工作工厂工作 20年了。年了。1)当我到达学校的时候，我才意识到我把书包当我到达学校的时候，我才意识到我把书包忘在家里了。忘在家里了。_ I got to school,I realized that I _ _ my backpack at home.2)到我返回学校的时候，铃声已

5、经响过了。到我返回学校的时候，铃声已经响过了。_ _ _ I got back to school,the bell _ _.WhenhadleftBy the time had rung根据汉语提示完成句子。3)我到达公共汽车站之前，我到达公共汽车站之前，汽车已经离开了汽车已经离开了。Before I _ _ the bus stop,the bus _ _ _.4)我决定先买一杯咖啡，然后再去办公室。我决定先买一杯咖啡，然后再去办公室。I _ _ _ go up to my office when I decided to get a coffee first.got to hadalre

6、ady left was about to5)就在我和别的工作人员一起排队等候 的时候，听到了一个巨大的声响。As I _ _ _ _ with the other office workers,I _ _ _ _.was waiting in line heard a loud soundNotes：1.由when,by the time,before等引导时间状语从句时，若描述发生在过去的事，主句常用过去完成时(had+过去分词)表示动作发生在过去的过去。2.be about to do,be doing等表示即将或正在做某事时，常用when引导从句表示突然发生的动作，when有时可省略。

7、现在完成时与过去完成时的区别：现在完成时表示的动作发生在说话之前某个没有明确说出的过去时间，侧重过去发生的动作对现在产生的影响或造成的结果，与现在有关；过去完成时的动作发生在“过去的过去”，它是一个相对的时态，不能离开过去的时间而独立存在。e.g.We have learned 1,000 English words so far.We had learned 1,000 English words by then.1.The world is changing with every second;and China,too,_with every second.A.is changing B

8、.had changed C.changed2.I ate some fruit,which I _ since I was a child,and the vegetables from my garden.A.have enjoyed B.enjoyedC.enjoy D.had enjoyed3.He _ his English teacher when he was sightseeing in Paris.A.has metB.had metC.met D.would meet4.Why wont we play basketball with Class 4 this aftern

9、oon?Because they _ Longzhong for a study trip.A.have gone to B.have been to C.had gone to D.had been to4aMake sentences using by the time or before.1.Tim went into the bathroom.Mary got up.By the time Mary got up,Tim had already gone into the bathroom.2.The coffee became cold.I put cream(n.奶油)in the

10、 coffee._ _Before I could put cream in the coffee,the coffee had become cold.3.The teacher collected the math homework.I got to school._ _4.I completed the work for my boss.The workday(n.工作日)ended._ _By the time I got to school,the teacher had collected the math homework.I had completed the work for

11、 my boss before the workday ended.5.The movie started.I arrived at the cinema._ _6.My mother finished making the apple pie.I got home from my language course._ _ _The movie had started before I arrived at the cinema.By the time I got home from my language course,my mother had finished making the app

12、le pie.4bFill in the blanks with the correct forms of the words in the box.1.By the time I arrived at the party,everyone else _ already _.2.When he put the noodles into a bowl,he realized he _ to add the green beans(n.豆).rush out,forget,arrive at,go into,show up(赶到；露面),find outshown uphadhad forgott

13、en3.By the time my mother came back from the market(n.市场),I _ already _ of the door to go to my piano lesson.4.Before she got to the airport,she _ about the earthquake.hadrushed out had found outrush out,forget,arrive at,go into,show up(赶到；露面),find out5.When she _ the movie theater,she remembered sh

14、e had forgotten to feed her dog.6.Before she got a chance to say goodbye,he _ the building.arrived athad gone intorush out,forget,arrive at,go into,show up(赶到；露面),find out4cWrite two true statements and one false statement about your day yesterday.Then ask your classmates to guess the false statemen

15、t.1.By the time I left for school in the morning,_ _ _I had already had breakfast.I had already brushed my teeth.I had already finished my homework.2.By the end of the school day,_3.By dinner time,I_I_I_I have got a present from Tom.I had had these articles read.I had finished my homework.had had to

16、o many apples.had eaten plenty of meat.had all the housework finished.1.过去完成时的构成：过去完成时的构成：_+_2.过去完成时表示：过去完成时表示：_ _3.过去完成时常与过去完成时常与_等引导的时间等引导的时间状语连用。状语连用。had过去分词when,before,by the time 过去某一时刻或动作之前已经发生或完成的动作。句型When I got to school,I realized that I had left my backpack at home.By the time I got back t

17、o school,the bell had rung.Before I got to the bus stop,the bus had already left.show up by the end of 露面；赶到在(某时间点)以前I was about to go up to my office when I decided to get a coffee first.As I was waiting in line with the other office workers,I heard a loud sound.根据短文内容及括号内所给动词的提示，用正确的时态或语态补全短文，使短文完

18、整、通顺。A cow and a fox went out to search for food together.They(1)_(go)only a few miles before they saw a lion coming their way.They were both very scared.The fox thought of a way to save his own life,and went up to the lion and said in his ear,had gone“I(2)_(help)you catch the cow without the troubl

19、e of hunting(猎杀)him,if you let me go free.”The lion agreed,and the fox then led the cow to a hidden pit(深坑),which some hunters(3)_(dig)as a trap(陷阱)for wild animals,and the cow fell into it.When the lion saw that the cow(4)_(catch)and couldnt get away,he turned his attention to the fox.He soon kille

20、d him,and then went on to eat the cow.Betray(背叛)a friend,and youll often find you have ruined(毁灭)yourself.will helphad dughad been caught1.复习Grammar Focus 中的内容。Try to make sentences with before,by the time and be doing when,and you can use the past perfect tense in your sentences.2.Preview 1a-2a on page 93.