as的用法归纳全课件.ppt

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1、Period3:Sentence Patterns192.1295.2350.3490.4589.3660.0743.9896.9989.31061.3112.01296.21390.21448.115100.09日单选正答率日单选正答率 导导3.She was afraid to go into the yard because she was afraid of being bitten by the big dog lying at the gate.be afraid to do 因害怕而不敢做某事 be afraid of doing sth.担心(害怕)某事发生 He is afr

2、aid of being beaten by his father.He is afraid to touch the snake.6.We are dying to hear about your experience in the army.be dying for sth.(n.pron.)be dying to do sth.be eager to do be eager for long to do long for192.1295.2350.3490.4589.3660.0743.9896.9989.31061.3112.01296.21390.21448.115100.09日单选

3、正答率日单选正答率 导导7says that providing children with access to the information superhighway is of great importance.have access to 获得的机会(权利)进入的通道Only high officials have access to the President.There is no access to the house.11.The two countries used to be at war with each other,but now they are at peace.

4、at war做表语 at peace 做表语In peace=peacefully 做状语Let us forgive each other only then will we live in peace 单选14.完型 24.思思 Look through the guideline;Make full comprehension of the key points;&tick the points that confuse U;Then finish the following exercises;10:43 to 11:00 议议11:00 to 11:05Task1:Summarize

5、 the usage of “as”Task2:Discuss the exercises that confuse u as用法归纳用法归纳 展评展评 asasconj.adv.relative pron.prep.固定用法固定用法引导定语从句引导定语从句引导引导时间时间状语从句状语从句引导原因状语从句引导原因状语从句引导引导让步让步状语从句状语从句引导引导方式方式状语从句状语从句引导比较状语从句引导比较状语从句 展评展评一、作副词一、作副词Jack is as tall as his father.肯定句:“像(和)一样”常用于asas结构.否定句:“不像(和)一样”常用于 not as(

6、so)as 展评展评 I read the letter as I walked along the river.As I get older I get more optimistic.John was having his dinner when I saw him.She can write only when the baby is asleep.We must strike while the iron is hot.While we were reading,the teacher came in.1.引导时间状语从句引导时间状语从句二、用作连词二、用作连词 展评展评区别区别连词连

7、词时间时间与与主句谓语主句谓语动作动作只用只用asaswhenwhen延续性动词延续性动词暂时性动词暂时性动词同时发生同时发生&先于主句先于主句发生发生whilewhile延续性动词延续性动词同时发生同时发生&过程中过程中两个动作同时进行两个动作同时进行 “一边一边,一边一边”两个同步发展的动作或两个同步发展的动作或行为行为,“随着随着”asas引导时间状语从句引导时间状语从句as当当的时候的时候延续性动词延续性动词同时进行同时进行 展评展评v As she has been ill perhaps she need some help.v I stayed at home because i

8、t rained.v Since everyone is here,lets start.v It must have rained last night,for the ground is wet.2.引导原因状语从句引导原因状语从句语气由强至弱:becausesinceasfor展评展评 as as引导原因状语从句引导原因状语从句as 是个常用词,所表示的原因是双方已知的事实 或是显而易见的,含义与since相同,但语气更 弱,常译成“由于,鉴于”because 语气最强;常用于回答why的提问;它所 指的原因通常是听话人所不知道的since 表示对方已知的、或稍加分析便可得知的原 因,有

9、时译作“既然”for 表附加的解释、说明或推理。不放句首注意:在强调句型中只能用becauseIt was because I missed the early bus that I was late for school.展评展评.1.Strong as he is,he is afraid of pain.2.Slowly as the tortoise walks,it can beat the rabbit.3.Doctor as she is,she cant cure her own disease.4.Try(hard)as he does(will),he never seem

10、s able to do the work beautifully.adj./adv+as+S+be/v.n.+as+S+be(句首名词不带冠词句首名词不带冠词)v.+as+S+do/does/did3.as3.as引导让步状语从句引导让步状语从句(倒装)(倒装)展评展评asas引导让步状语从句引导让步状语从句vAlthough Although they are poor they are happy.they are poor they are happy.vBusy Busy as as he is,he insists on studying.he is,he insists on s

11、tudying.vThoughThough he is busy,he insists on studying.he is busy,he insists on studying.vBusy Busy as(though)as(though)he is,he insists on studying.he is,he insists on studying.Make a summary:as 译成译成“虽然,尽管虽然,尽管”,引导让步状从,引导让步状从必须必须用倒装语序;用倒装语序;althoughalthough 不倒装不倒装,且不能再与,且不能再与butbut连用,但能和连用,但能和yety

12、et连用;连用;thoughthough 可倒可不倒可倒可不倒 展评展评 4.4.as引导方式状语从句引导方式状语从句vAs引导方式状从引导方式状从 译成译成“按照按照的方式的方式”vRemember,you must do everything as I do.vWhen at Rome,do as Romans do.vWe do farm work as the old peasant teaches us.展评展评 5.5.引导比较状语从句引导比较状语从句v用于用于“as.as.as.as.或或notnot so/so/as.as.as.as.”中中,前一个前一个vasas是副词是副词

13、,后一个后一个asas是连词,是连词,“像像(不和不和)一样一样”。vYour pen writes as smoothly as mine.vThis dictionary is not as/so useful as you think.vThis is as good an example as the other is.I can carry as much paper as you can.展评展评 6.6.引导条件状语从句引导条件状语从句主要句式有:主要句式有:as long as/so long as 只要只要 As long as you study hard,you will

14、 make great progress.展评展评三、用作关系代词三、用作关系代词 as作为关系代词,用来引导定语从句,包括限制性定语从句和非限制性定语从句。构成such/soas/the sameas等结构,在从句中作主语、宾语和表语.引导非限和which的区别:As we all know,Taiwan belongs to China.Taiwan,as we all know,belongs to China.Taiwan belongs to China,as we all know.as everybody knows,as you may remember,as you say,

15、as I can see,as I have said,as you may have heard 一些固定词组 展评展评注意注意:suchas与suchthat,soas与sothat的区别:that是连词,引出结果状语从句是连词,引出结果状语从句,在从句中不做成分;as是关系代词,引出定语从句是关系代词,引出定语从句,在从句中可作主语、宾语和表语。比较:He is such a nice boy that everyone likes him.He is such a nice boy as everyone likes.这个男孩的性格如此之好,人们都喜欢他。It is so diffic

16、ult a problem that nobody can work it out.It is so difficult a problem as nobody can work out.这个问题太难了,没有人能解决。展评展评四、作介词,四、作介词,1.1.表示“作为,当作,以身份”As a writer,he was famous.2.as作为介词,常和以下动词连用 regardas/be known as/consideras useas/describeas/be remembered as be honored as/作介词的as常用来引入补足语 They regard him as

17、their leader.宾补 The report was considered as false.主补 展评展评As和和 like 都可以做介词都可以做介词,但词义是不同的但词义是不同的,As 作为作为,以以资格资格,Like 像像.与与相似相似As a scientist,he dedicated to the truth.She works like a beaver.她工作勤勤恳恳她工作勤勤恳恳展评展评as 连词 像一样 +句子like 介词 像一样 +词I have never seen such a clever man _ he五、用于一些固定搭配五、用于一些固定搭配v1.su

18、ch as 例如例如v2.as for=as to sb/sth.至于某人(某事物)至于某人(某事物)v3.so as to 以便以便,为了为了v4.as a matter of fact 事实上,其实事实上,其实v5.as a result 作为结果作为结果v6.as a result of 由于由于/作为作为的结果的结果v7.as follows 如下如下v8.as far as I know/can see 就我所知就我所知 展评展评vRead the following sentences:v1.Tom runs fast,but I run just as fast.v2.She d

19、oesnt sing so well as her sister.v3.I have changed it as you suggested.v4.We all like her as she is very kind.v5.He raised his voice so as to be heard.v6.Tired as they were,they walked on.v7.I never heard such stories as he told.v8.He is careful,as his work shows.v9.He works as a teacher.v10.As you

20、sow,so will you reap.展评展评v1.A good many proposals were raised by the delegates,_was to be expected.vA.that B.what C.so D.as v2._might be expected,the response to the question was very mixed.vA.As B.That C.It D.Whatv3._he works hard,I dont mind when he finishes the experiment.vA.As soon as B.So far a

21、s vC.As well as D.As long as OKOKOKlChecking 检检v4.It is generally believed that teaching is _it is a science.vA.an art much as B.much an art as vC.as an art much as D.as much an art as v5.She doesnt speak _her friend,but her written work is excellent.v A.as well as B.so often as v C.so much as D.as good as6.The piano in the other shop will be _,but _.vA.cheaper;not as better vB.more cheap;not as bettervC.cheaper;not as good vD.more cheap;not as good 检检

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