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1、状语从句,状语从句是中考词汇和句法部分考查的重点内容之一。在复习状语从句时,主要任务是弄清楚引导各种状语从句的连词的用法。,1.引导时间状语从句的连词主要有when,while,as,by the time,before,after,since,till/until,as soon as等。其中when,while和as都可表示当时候,但用法有区别:when意为在时;当时,可表示点时间或段时间,从句谓语可以是终止性动词,也可以是延续性动词。例如:When I got home,he was having supper.as意为边边或与同时,重在表示两个动作同时发生。伴随进行。as从句是终止性动
2、词时,主句通常也必须是终止性动词。例如:They sang as they danced.while只可表示段时间,从句谓语只限于延续性动词。例如:While I was sleeping,my father came in.注:从句谓语是持续性动词时,when、while和as可以互换,主、从句谓语都是终止性动词时,when与as可互换,从句谓语表示状态时,通常用while。注意：在时间状语从句中，如果主句是祈使句或是叙述还未发生的动作，从句应用一般现在时表示动作将要发生。（主将来，从现在）如：Dont get off the bus until it stops.车停下来之前不要下车。Il
3、l phone you after I get home.我到家后就给你打电话。,单项选择()1.Wellgive her the book when we _her tomorrow.A.see B.will see C.seeing D.is seeing()2.Tomorrow will be Fathers Day.What will you do for your father?-Ill say“I love you,Daddy”as soon as he_ up.A.will wake B.wakes C.is waking D.woke()3.He slept _he was l
4、istening to music last night.A.when B.before C.after D.while,A,B,D,2.引导原因状语从句的连词原因状语从句一般由because,since,as,for引导.注意as,because,since和for的区别:如果原因是构成句子的最主要部分,一般用because。because引导的从句一般不放在句子的开头。例如:I missed the train because I got up late.注:对于以why开头的问句,一般只能用because引导的从句来回答。如果原因已为人们所知,或不如句子的其余部分重要,就用as或sinc
5、e、since比as稍微正式一些。as和since引导的从句一般放在句子的开头。例如:As he was not well,I decided to go there without him.Since this method doesnt work,lets try another.for表示所说的理由是一种补充说明,因此,for引导的从句可以放在括号里,而且for引导的从句一般不放在句子的开头。例如:I decided to stop and have lunch,for I was feeling quite hungry.,3.引导结果状语从句的连词主要有so/suchthat,so
6、that等。1)so.that结构在某种情况下可以与enough to和too.to结构相互转换。例如:She is so short that she cant reach the buttons of the lift.=She is too short to reach the buttons of the lift.2)so that也可以引导结果状语从句,意为结果是;以致于。例如:They missed the bus so that they were late for class.注:so that也可引导目的状语从句,此时可用to或in order to替换,将其改为简单句。例
7、如:He got up early so that he could get to school on time.=He got up early to get to school on time.=In order to get to school on time,he got up early.,()1.He is _ young _ he cant carry the box.A.very,that B.so,that C.too,to D.so,to()2.He got up very early _ he caught the early bus.A.in order to B.to
8、 C.so that D.such that()3.There is _ little water in the jar _ the bird cant drink.A.so,that B.such,that C.a,that D.very,that()4.He is _ little boy _he can hardly speak.A.so,that B.such,that C.a,that D.very,that,B,C,A,B,4.引导条件状语从句的连词主要有if(如果）unless（除非）注意：在条件状语从句中，如果主句是祈使句或是叙述还未发生的动作，从句应用一般现在时表示动作将要发
9、生。（主将来，从现在）如：You may go out to play if your homework is done.但是if作是否讲时，所用时态要根据句子意思(if表如果，主将来，从现在。if表是否，时态随句意）如:I dont know if he will come to the party.If he comes,Ill phone you.,()1.Dont eat the food on the table unless you _ very hungry.A.are B.will be C.are going to be D.is()2.What would you do i
10、f it_ tomorrow?A.rain B.rains C.will rain D.is raining()3.Could you tell me if it _ tomorrow.If it _rain,we will go to the park.A.is raining,wont B.rains,doesnt C.will rain,wont D.will rain,doesnt,A,B,D,比较状语从句：asas(和一样）not as/soas（不如）和 than（比）如：An elephant is much bigger than a horse.He is as clever
11、 as his brother.She doesnt study so hard as her sister.让步状语从句：Though/although（尽管，虽然）,but（但是）,even if（即使，纵然）注意：though/although 和but不能同时用在一句话中，二者只用其一。如：Though it is raining hard,all the students get to school on time.或It is raining hard,but all the students get to school on time.,()1.I dont like bread
12、.I wont eat it _I am very hungry.A.if B.when C.as D.unless()2.Im going to look for another job _ the company offers me more money.A.after B.when C.unless D.besides()3.Did you see who the driver was?-No,the car ran so fast _I couldnt get a good look at his face.A.that B.which C.as D.after()4.-_do you
13、 like theCool Kids?-Because they look cool.A.What B.How C.Why()5.Peter was late for the meeting_he missed the train.A.though B.because C.while D.if,D,C,A,C,B,()6.If you _late tomorrow morning,you wont catch the early bus.A.get up B.dont get up C.will get up()7.Ill do it better if the teacher_me anot
14、her chance.A.give B.gives C.gave D.will give()8.The box is _heavy _I cant carry it.A.too,to B.so,that C.very,that D.too,that()9.Nowadays science fiction isnt as_as cartoons among teenagers.A.popular B.less popular C.more popular D.the most popular()10.Do you know if _back next week?If he_ back,please let me know.A.he comes,will come B.will he come,comes traveled C.he will come,comes D.will he come,will come,A,B,B,A,C,
