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初中英語狀語從句用法
初中英語有三大從句，今天CN人才小編推薦的是狀語從句，歡迎閱讀。
1 時(shí)間狀語從句
(1)時(shí)間狀語從句常用when, as, while, before, after, since, till, until, as soon as等連詞來引導(dǎo)。例如：
It was raining hard when got to school yesterday.
While he was doing his homework, the telephone rang.
As he walked along the lake, he sang happily.
He had learned a little Chinese before he came to China.
After he finished middle school, he went to work in a factory.
(2)在時(shí)間狀語從句里，通常不用將來時(shí)態(tài)，用現(xiàn)在時(shí)態(tài)表示將來的動作或狀態(tài)。例如：
I’ll ring you up as soon as I get to New York.
I will tell him everything when he comes back.
He won’t believe it until he sees it with his own eyes.
(3)在帶有till或until引導(dǎo)的時(shí)間狀語從句的主從復(fù)合句里，如果主句用肯定式，其含義是“一直到……時(shí)”，謂語動詞只能用延續(xù)性動詞。如果主句用否定式，其含義是“直到……才……”, “在……以前不……”, 謂語動詞可用瞬間動詞。例如：
The young man read till the light went out.
Let’s wait until the rain stops.
We won’t start until Bob comes.
Don’t get off until the bus stops.
2 條件狀語從句
(1)條件狀語從句通常由if, unless引導(dǎo)。例如：
What shall we do if it snows tomorrow?
Don’t leave the building unless I tell you to.
(2)在條件狀語從句里，謂語動詞通常用現(xiàn)在時(shí)態(tài)表示將來的動作或狀態(tài)。例如：
I’ll help you with your English if am free tomorrow.
He won’t be late unless he is ill.
(3)“祈使句 + and (or)+ 陳述句” 在意思上相當(dāng)于一個(gè)帶有條件狀語從句的復(fù)合句。例如：
Hurry up, or you’ll be late.
=If you don’t hurry up, you’ll be late.
Study hard and you will pass the exam.
=If you study hard, you will pass the exam.
3 原因狀語從句
(1)原因狀語從句通常由because, since, as引導(dǎo)。例如：
He didn’t come to school because he was ill.
As it is raining, we shall not go the zoo.
Since you can’t answer the question, I’ll ask someone else.
(2)because表示直接原因，語氣最強(qiáng)。Because引導(dǎo)的原因狀語從句多放在主句之后�；卮鹩蓋hy提出的問題，只能用because。As和since語氣較弱，一般用來表示明顯的原因。由as和since引導(dǎo)的原因狀語從居多放在句首。例如：
------Why aren’t going there?
------Because I don’t want to.
As he has no car, he can’t get there easily.
Since we have no money, we can’t buy it.
(3)because和so不能同用在一個(gè)句子里。
4 結(jié)果狀語從句
(1)結(jié)果狀語從句由so…that, such…that, so that引導(dǎo)。例如：
He is so poor that he can’t buy a bike for his son.
She is such a good teacher that everybody likes her.
My pencil fell under the desk, so that I couldn’t see it.
(2)so…that語such...that可以互換。例如：
在由so...that引導(dǎo)的結(jié)果狀語從句中，so是副詞，與形容詞連用。其結(jié)構(gòu)是: “...so + 形容詞(副詞)+ that + 從句”。例如：
He was so glad that he couldn’t say a word.
The hall is so big that it can hold 2,000 people.
Mother lives so far away that we hardly ever see her.
在由such…that引導(dǎo)的結(jié)果狀語從句中，such是形容詞，它修飾的可以是單數(shù)或復(fù)數(shù)可數(shù)名詞，也可以是不可數(shù)名詞;名詞前面可以帶形容詞，也可不帶。如果是單數(shù)可數(shù)名詞，前面需加不定冠詞a或an。例如：
It was such a hot day that nobody wanted to do anything.
He had such long arms that he could almost touch the ceiling.
He made such rapid progress that he did very well in the mid-term.
有時(shí)上述兩種結(jié)構(gòu)是可以互換的。例如：
It was such a wonderful film that all of us wanted to see it again.
=The film was so wonderful that all of us wanted to see it again.
It is such an important match that nobody wants to miss it.
=The match is so important that nobody wants to miss it.
(3)如果名詞前由many, much, little, few等詞修飾時(shí)，只能用so, 不用such。例如：
Soon there were so many deer that they ate up all the wild roses.
He has so little time that he can’t go to the cinema with you.
5 比較狀語從句
比較狀語從句通常由as…as, 比較級 + than…等連詞引導(dǎo)。例如：
Tom runs faster than John does.
This classroom is as big as that one.
6 目的狀語從句
(1)目的狀語從句通常由 so that, in order that引導(dǎo)。例如：
We started early so that we could catch the first train.
He studies hard so that he could work better in the future.
We used the computer in order that we might save time.
(2)so that既可引導(dǎo)目的狀語從句，又可引導(dǎo)結(jié)果狀語從句。區(qū)別這兩種從句的辦法有兩個(gè)：1)目的狀語從句里往往帶有情態(tài)動詞can, could, may, might等。2)從意思上看，目的狀語從句往往表示的目的很明確。例如：
Speak clearly so that they may understand you. (目的狀語從句)
Jack is badly ill so that he has to rest. (結(jié)果狀語從句)
7 讓步狀語從句
(1)讓步狀語從句通常由although, though等連詞引導(dǎo)。例如：
Though he is young, he knows a lot.
Although I am tired, I must go on working.
(2)although(though)不能用在同一個(gè)句子中。例如：
我們不能說：Though it was raining hard, but he still went out.
應(yīng)該說：Though it was raining hard, he still went out.或It was raining hard, but he still went out.
8 地點(diǎn)狀語從句
地點(diǎn)狀語從句常常由where來引導(dǎo)。例如：
Go where you like.
Where there is a will, there is a way.
延伸閱讀：
1.初中狀語從句常見考法
對于結(jié)果狀語從句的考查，多以單選和完形填空的形式，從連詞的意義角度讓大家選擇連詞。
典型例題：
His plan was such a good one ____ we all agreed to accept it.
A. so B. and C. that D. as
解析：題干的意思是“他的計(jì)劃如此好以至于我們都同意接受它”，that與前面的such呼應(yīng)， 引導(dǎo)結(jié)果狀語從句。
答案：A
2.初中狀語從句誤區(qū)提醒
結(jié)果狀語從句中。除了要注意so… that和 such…that的區(qū)別外，還要注意它們和too...to do(太···而不能····)和enough +形容詞/副詞+to do(足夠的···可以···)的轉(zhuǎn)換。
典型例題：
Ann is too young to go to school.(同義句轉(zhuǎn)換)
Ann is go to school.
解析：原句的意思是“安太小了而不能去上學(xué)”。那也就是說“安是如此的小，以至于她不能去上學(xué)”，根據(jù)所給出的空數(shù)，可以用so… that句型.
答案：so young that she can't
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