+Unit+4+Grammar课件 牛津译林版九年级英语上册.pptx

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1、GrammarGrammarPreviewPreview1.He remained there for about a year _ the NBA took notice of him.(P51)2._ he graduated,he was forced to play in another basketball league.(P51)3._ he finally got the chance,he scored 20 points in his first game.(P50)4._(he was)attending junior high,Spud tried out for the

2、 school team.(P50)5.Youve been happy _ I first met you.(P48)6.Do not wake me up _ you finish your work.(P48)beforeAfterWhenWhilesinceuntil7._ you click the mouse,theres a great deal of information.(P49)8.I can read them _ I want to.(P49)9._ the children have fun,parents can take dance lessons on the

3、 beach.A.When B.If C.Before D.Once10.Tigers wait _ it is dark,then go out to find their food.A.since B.until C.as D.becauseAs soon aswheneverWhat is a time clause?e.g.When the weather is good,my grandpa likes going fishing.The sun came out after the storm stopped.时间状语从句是指在复合句中充当时间状语的句子时间状语从句是指在复合句中充

4、当时间状语的句子We use the conjunctions before,after,when and while to introduce time clauses.They can be placed at the beginning or in the middle of sentences.1.“Before”means earlier than a certain time.before的意思是的意思是“在在之前之前”，表示主句动作发生在从句动作之前。，表示主句动作发生在从句动作之前。e.g.He remained there for a year before the NBA

5、took notice of him.2.“After”means later than a certain time.after的意思是的意思是“在在之后之后”，表示主句动作发生在从句动作之后。，表示主句动作发生在从句动作之后。e.g.After he graduated,he was forced to play in a basketball league.3.“When”means at or during a certain time.when的意思是的意思是“当当时候时候”，表示主句动作发生的特定时间。主，表示主句动作发生的特定时间。主句和从句的动作可以同时发生，也可以先后发生。句

6、和从句的动作可以同时发生，也可以先后发生。注意：在含有注意：在含有when引导的时间状语从句的复合句中，从句的时态引导的时间状语从句的复合句中，从句的时态多用一般现在时或一般过去时。多用一般现在时或一般过去时。从句从句的谓语动词的谓语动词可以是延续性动词可以是延续性动词，也可以是非延续性动词也可以是非延续性动词。当主句和从句的主语一致，并且从句的谓语中有当主句和从句的主语一致，并且从句的谓语中有be动词的某动词的某种形式时，可以省略从句的主语和种形式时，可以省略从句的主语和be动词。动词。e.g.The days get longer when spring comes.It was snow

7、ing when we got to the airport.When(she is)in trouble,she always asks for my help.4.“While”means during a certain time.while的意思是的意思是“当当时候时候”，表示主句动作发生在从句动作进行，表示主句动作发生在从句动作进行的过程中，或者是两个动作同时发生。的过程中，或者是两个动作同时发生。注意：在含有注意：在含有while引导的时间状语从句的复合句中，引导的时间状语从句的复合句中，从句从句的谓语的谓语动词动词必须是延续性动词必须是延续性动词。当主句和从句的主语一致，并且从句

8、的谓语中有当主句和从句的主语一致，并且从句的谓语中有be动词的动词的某种形式时，可以省略从句的主语和某种形式时，可以省略从句的主语和be动词。动词。e.g.While we were having a meeting,Li Ming came in.Some students were reading while others were writing.While(I am)travelling,I like to buy some souvenirs.David is writing in his diary about one of his days.Help him combine hi

9、s sentences using before,after,when or while.1.I go jogging every morning.Then I have breakfast._2.I practised playing basketball for hours.I felt tired out._3.I met Peter.I was waiting at the bus stop._4.I was watching TV.I received a call from my uncle._5.I was ready to go to bed.My father came ba

10、ck from work._I go jogging every morning before I have breakfast.After I practised playing basketball for hours,I felt tired out.I met Peter while(I was)waiting at the bus stop.While(I was)watching TV,I received a call from my uncle.I was ready to go to bed when my father came back from work.We also

11、 use the conjunctions since,till and until to introduce time clauses.1.“Since”means from a certain time.since的意思是的意思是“自从自从以来以来”。一般情况下，从句谓语动词用一般。一般情况下，从句谓语动词用一般过去时，而主句的谓语动词用现在完成时。过去时，而主句的谓语动词用现在完成时。注意：注意：since引导的引导的从句从句的谓语动词的谓语动词可以是延续性动词，也可以是非可以是延续性动词，也可以是非延续性动词延续性动词，但，但主句主句的动词的动词必须是延续性动词必须是延续性动词。e.g

12、.Youve been happy since I first met you.They have been friends since they were at primary school.(1)句型句型“Its/It has been+一段时间一段时间+since+时间状语从句时间状语从句”，意为，意为“自自从从以来，已经以来，已经(时间时间)了了”。从句的谓语动词用一般过去时，而从句的谓语动词用一般过去时，而且须是非延续性动词且须是非延续性动词。e.g.Its/has been three months since he moved to this city.(2)句型句型“一段时间一

13、段时间+has passed+since+时间状语从句时间状语从句”，意为，意为“自从自从以来，以来，(时间时间)已经过去了已经过去了”，从句的谓语动词用一般过去时，从句的谓语动词用一般过去时，而且须是非延续性动词而且须是非延续性动词。e.g.Three months has passed since he moved to this city.(3)since还可引导原因状语从句，意为还可引导原因状语从句，意为“由于；既然由于；既然”，语气较弱，一般，语气较弱，一般强调已知的事实。强调已知的事实。e.g.Since you cant answer the question,Ill ask s

14、omeone else.2.“Till”and“until”both mean up to a certain,but“till”is more informal than“until”.till和和until的意思是的意思是“到到为止为止”。一般情况下两者可以互换，。一般情况下两者可以互换，但是但是till不如不如until正式。正式。e.g.Walk till/until you see a white house.until意为意为“直到直到为止为止”，常与，常与延续性动词延续性动词连用，表示句子的连用，表示句子的动作一直持续到动作一直持续到until所表示的时间所表示的时间为止为止。e

15、.g.I waited until three oclock,but he didnt come.notuntil意为意为“直到直到才才”，常与，常与非延续性动词非延续性动词连用，连用，表示句子表示句子(主句主句)的动作直到的动作直到until所表示的时间所表示的时间才开始才开始。e.g.The boy didnt sleep until his father came back.Here are more sentences from Davids diary entry.Complete his sentences with since,till or until.1.I have bee

16、n crazy about playing basketball _ I was a little boy.2.The weather has been awful this week.The rain did not stop _ yesterday evening,so we could not practise basketball for several days.3.We played basketball in the playground this afternoon _ it was getting dark.4.It is the first time we have pla

17、yed basketball _ Monday.We enjoyed ourselves very much.5.I waited for 20 minutes at the bus stop _ the bus arrived.6.It is Friday evening.I will not go to bed _ I finish watching my favourite TV programme.sincetill/untilsincetill/untiltill/untiltill/untilThe conjunctions as soon as and whenever can

18、also introduce time clauses.1.“As soon as”means when something happens,or a short time after something has happened.as soon as的意思是的意思是“一一就就”，表示两个动作紧接着发生。，表示两个动作紧接着发生。e.g.It began to rain as soon as I left the house.2.“Whenever”means at any time.whenever的意思是的意思是“每当，任何时候，无论何时每当，任何时候，无论何时”。e.g.I can re

19、ad books whenever I want to.Simon is writing about Davids love for basketball.Help Simon complete his sentences with as soon as or whenever.1.David often goes to play basketball _ school is over.2.He watches the NBA _ there is a game on TV.3._ he talks about basketball,he gets excited.4._ he learnt

20、that the NBA players would come to China,he tried his best to get a ticket.as soon aswheneverWheneverAs soon asDavid is writing about Yao Ming,his favorite basketball star.Help him complete his article with the correct conjunctions you have learnt in this unit.Yao Ming was born in Shanghai in 1980.H

21、e got his first basketball(1)_ he was only four years old,but he did not become serious about basketball(2)_ he was 12.Yao joined the Houston Rockets in 2002 and became the best Chinese player to ever play in the NBA.(3)_ he went to the USA,he knew little English,but he quickly learnt the language.T

22、he best moment in his career was in 2004he scored 41 points in a game against the Atlanta Hawks.When Yao Ming was living in the USA,he returned to China(4)_ he was needed.He took part in the Olympics in 2004 and in 2008 as one of the Chinese athletes.(5)_ he ended his basketball career,Yao has done

23、more charity work,especially for poor Chinese teenagers.whenWhen/Beforetill/untilwheneverSince/After1.feel tired out 感到筋疲力尽感到筋疲力尽2.wait at the bus stop 在公交车站等在公交车站等3.receive a call from sb.接到某人的电话接到某人的电话e back from work 下班回来下班回来5.be/become serious about 认真对待认真对待6.end his basketball career 结束了他的篮球生涯结

24、束了他的篮球生涯7.do more charity work 做更多的慈善工作做更多的慈善工作ExercisesExercises1.You cant watch TV _ you finish your homework.A.before B.if C.while D.after2.-Whats your plan this summer holiday?-Ill go to Beijing _ the school term ends.A.whenever B.till C.as soon as D.before3._ I was in the US,I made many America

25、n friends.A.While B.Although C.Unless D.Until4.Many students didnt realize the importance of study _ they left school.A.when B.until C.as D.after5.You should go over your test paper _ you hand it in.A.before B.when C.while D.after6._ I got back,my mother was cooking for me.A.When B.Before C.Since D.

26、Although7.For your safety,you mustnt get close to the train _ it stops.A.while B.when C.since D.until8.My cousin became a country doctor _ he finished medical school.A.after B.so C.since D.before9.We were lucky yesterday.The bus left _ we got on it.A.before B.although C.until D.as soon as10.I love t

27、o listen to rock music _ I am running.A.while B.after C.since D.until11._ I am in trouble,my best friend Li Lei always help me.A.Whenever B.Whatever C.However D.Never12.At the meeting,the managers kept arguing about the problem _ they reached an agreement.A.after B.when C.until D.since13.-You have been in Nanjing very long?-Yeah._ my parents came here.A.For B.As C.When D.Since14.I will send you an e-mail as soon as I _ in Canada.A.arrive B.arrived C.am arriving D.will arriveThank you!