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九年级英语专题复习:状语从句

发布时间:2013-09-23 09:00:01  

初三英语专题复习之

状语从句
丰翼中学 赵艳君

一、概念 ? 1.定义:在主从复合句中,用于修饰主句中动词、形容词或副 ? 词的句子,叫状语从句。 ? 2.类型:状语从句按其在句中的作用分为:时间、地点、原因、 ? 目的、结果、条件、方式、让步、比较状语从句九类。 ? 3.位置:由从属连词引导,可位于主句前,亦可位于主句后。 ? 位于句首时,用逗号与其后的主句隔开。 ? 二、时间状语从句 ? 引导时间状语从句的连接词有:when, as, while, after, ? before, since, as soon as, till, until等。要根据连词的 ? 不同意义来推断主句的谓语动词的时态。在时间状语从句中, 通常用一般现在时代替一般将来时。 ? eg: (1) What are you going to do when you grow up? (一) when, while, as引导的时间状语从句 ? 1.when = at the time that “当(在)…时”,可表示瞬间、时间 段,主从句所述动作、事情可同时,也可以有先后。
?

eg: (2)It was snowing when we got to the airport.
? ? ? ? ? ?

我们到达机场时,天正在下雪。(同时发生)
(3)He went home when he had finished his homework.

做完作业之后他回家去了。(先后发生)
2.while = for as long as/during the time that “正当(正在)…时” 用于同时进行的两延续性动词相伴随而发生,常对同类的两动 作进行对比: eg: (4)Please write while I read.(= during the time that)

我念的时候请写下来。
(5)I am safe while I am here.(= for as long as)

只要我在这儿,我就安全。
(6)Some students were reading while others were writing. 有些学生在读,而有些学生在写。(进行对比) 3.as = at the same time “当…时”
?

(1)不指先后,而指并相发生,尤指短动作或事件同时发生.

? ? ? ? ? ? ? ? ?

eg: (7)As I looked, some one came near.

正当我看时,有个人走上前来。
(2)说明两种正在发展或变化的情况. eg: (8)As I get older I get more optimistic.

我越活越乐观。
as/when/while均可引导时间较长的“背景”情况: eg: (9)As (When/While) I was walking down the street, I noticed a police car in front of Number 37.

我顺着马路往前走,发现37号门前停着一辆警车。

(二)before引导的时间状语从句通常表示主句的动作发生在从句 的动作之前,之后用after. eg: (10)Please turn off the light before you leave the room.

请你在离开房间之前把灯关掉。
(11)You can watch TV after you finish homework.

做完作业之后,你可以看一下电视。
?

(三)until/till 均表示主句的谓语动词(延续性动词)一直延续到 until/till 所表示的时间为止。 1. 肯定句中,二者可以通用。 eg: (12) You may stay here until/till the rain stops.

你可以在这儿呆到雨停。
2. 否定句中,表示主句的

谓语动词(非延续性动词)直到until所 表示的时间才发生。构成句式 not...until…,有时不用not, 也 可以用如never, nothing 等表示否定的词。这里不能用 till。 eg: (13)He didn’t go to bed until he had finished his work.

他直到完成工作才去睡觉。
3. till 不用于句首,也不可用于强调句。 eg: (14)Until he joined the army, he worked in that factory.

他在那家工厂上班直到参军。
(15)Until he told me, I knew Tom had been ill for a week.

知道他告诉我,我才知道汤姆病了一个星期了。

(四)since 引导的时间状语从句,表示“自…以来”,主句用现 在完成时,从句用一般过去时。 eg: (16)I have worked in this company since I graduated from college.

我从大学毕业后,一直在这家公司上班。
(五)as soon as引导的从句都表示从句的动作一发生,主句的动作 随即就发生,意为“一…就…”。这类从句中,经常用一般现在 时代替一般将来时。 eg: (17) As soon as he arrives, I’ll tell him.

他一到,我就告诉他。
三、地点状语从句 地点状语从句由 where, wherever 引导。 eg: (18) Where there is a will, there is a way.

有志者,事竟成。
四、原因状语从句 表示理由或原因的状语从句,常用连词 because, since和 as。这三 个词所表达的语气由 because 到 as 逐渐减弱。由 why 提出问题用 because 回答。

? ? ? ?

eg: (19)I lent him my bike because he needed it.

我把我的自行车借给了他,因为他需要。
(20)Let’s begin our meeting since everybody is here.

既然大家都到齐了,咱们就开始开会吧。

五、目的状语从句 (一)引导目的状语的词或词组有:so that, so, in order that等, 谓 语含有may, might, can, could, will, would等情态动词。 eg: (21)He must get up early so that he can catch the first bus.

他必须早点起床以便赶上第一班车。
(二)当从句与主句主语一致时,可用 so as to, in order to. eg: (22)He worked day and night in order that he could succeed. =He worked day and night in order to succeed.

他日夜工作想要获得成功。
六、结果状语从句 引导结果状语从句的词或词组有:so, so that, so…that, such…that.

? ? ? ?

eg: (23)The question is so hard that I can’t work it out. too to =The question is ____ hard for me ____work it out. not enough to =The question is ____ easy ______ for me ___work it out.

这道题如此难以至于我没做出来。

七、条件状语从句 (一)条件状语从句通常由 if(假如),as long as(只要),unless (除非)来引导,主句为祈使句、一般将来时、或有情态动词时 从句用一般现在时。 eg: (24)You will not pass the exam unless you study hard. If =__you don’t study, you won’t pass the exam. or =Study hard, ___ you won’t pass the eaxm.

除非你努力学习,否则你将

不能通过考试。
(二)如果 if引导的条件状语从句所表达的前提或条件将来可以实 现或正在进行,动词要用现在完成时或进行时,主句通常用将来 时。

?

eg: (25)I’ll show you how to do it if I have finished the book.

?

如果我读完了这本书,我就告诉你怎么做。

(三)“祈使句 +and/or/or else ”引导的结果状语从句,祈使句在意义上相当于条件状语 从句。 eg: (26)Use your head, and you’ll find a way. If =___ you use your head, you’ll find a way.

动动脑筋,你就会想出办法来。
八、方式状语从句 方式状语从句用以描述主句动作的方式,通常由 as(按照), as if/as though(好像)等引导。 eg: (27)I will do it as you tell me. 我将按照你告诉我的去做。 九、让步状语从句 让步状语从句表示某种与主句相反的条件或情况,但从句所表 示的这些不利因素并不能阻止主句动作的发生,在相反的条件下, 主句的情况依然存在。 让步状语从句的引导词有:though/although(虽然), even though(尽管), Whoever/no matter who(无论谁), however/no matter how(无论怎样), whatever/ no matter what(无论什么),Wherever/no matter where(无论哪里), whenever/ no matter when (无论何时)和 as(虽然)等,但主句不能再用 but。 eg: (28)He didn’t turn on the lights, though it was dark outside.

虽然里面很暗,但他没有开灯。

十、比较状语从句 ? 比较状语从句常用的从属连词为 as…as(和…一样), ? not as/so…as (和…不一样), than(比), the more…the more… (越…越) eg: (29)Jim is as tall as me/I am. (30)She doesn’t speak English as/so well as Mary (does). worse =She speaks English _____ than Mary (does). better =Mary speaks English ______ than her/she does. more better (31)The ______ (much) you practice English, the ______ (well) you learn it. Exercises ( B )1.I have been collecting coins ____ I was 11 years old. A. for B. since C. when D. after ( B)2.He worked ____ hard ____ he passed the exam. A. such, that B. so, that C. as, as D. too, to
?

( C )3.—Is Jim at school today? ---Yes, ____ he has a bad cold. A. because B. so C. though D. as ( D )4.Over 400 million people have visited Disneyland parks around the world ____ American Disneyland opened in July 1995. A. after B. before C. till D. since ( D )5.James with the Greens _____ the White Tower Park if it ____ tomorrow. A. are going to, isn’t rainy B. are going to, doesn’t rain C. is going to, won’t rain D. is going to, isn’t rainy ( C )6.I wonder if it ____ tomorrow. If it ____ , I’ll go hiking with Jim. A. will rain, won’t rain B. rains, won’t rain C. will rain, doesn’t rain D. rains, doesn’t rain ( B )7. He got up early this morning ____ he could catch the early bus. A. so B. in order that C. though D. in order to


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