春节临近，马上就要放寒假了。

身临其境，石安老师突然想到一副对联。上联是，不怕同桌是学霸；下联是，就怕学霸放寒假。横批是，差距越来越大！哈哈，虽然有点夸张，不过也不无道理。每年我们老师都会发现，过完春节，很多同学真的心都散掉了，每次都需要老师和家长帮着督促指引着，并且得花费很长的时间去收心。

俗话说，士别三日当刮目相待。在此，石安老师也希望每一个孩子：寒假归来变学霸！

今晚，石安老师带领大家一起来攻克上高中以来的一个很重要的考点——状语从句。不做第二，只争之一！临渊羡鱼不如退而结网，同学们赶快行动吧！

状语从句核心考点

1.时间状语从句

常用引导词when,as,while,as soon as,before,after,since,till ,until

特殊引导词every time/each time每次, immediately /the moment一---就---,when it comes to---说到---等，the first /last time之一次或最后一次

1)I will tell him when he comes back.他回来时我就告诉他。

2）I will tell him as soon as he comes back.他一回来我就把这个消息告诉他。= I will tell him the moment he comes back.= I will tell him immediately he comes back.

Be careful ! The machine starts __.the moment you press___(你一按)the button.(moment)

3）Each time I meet him, he will say Hello to me.每次我见到他，他都会向我问好。

Every time I listen to your advice,I get into trouble.每次我听你的意见，我都会陷入困境。

4）while引导的时间状从，从句中必须是延续性动词

While he was reading ,his wife was cooking.他看书时，他妻子烧饭。

5）till(一般不放在句首)until肯定形式表示“做某事直到某时”，动词必须是延续动词。否定形式表示“直至某时才做某事”动词一般为非延续性动词

I slept until midnight.=I didn`t wake up until midnight.我一直睡到半夜时醒了。

Wait till I call you.=Don`t leave till I call you.等着我叫你。

Don`t get off the bus until it has stopped.公共汽车停稳了再下车。

She didn`t arrive until 8 o`clock.她直到8点才到。=She arrived not until 8 o`clock.= Not until 8 o`clock did she arrive.=It was not until 8 o`clock that she arrived.

6）since从句，自从---以来

She has never called on me,since she moved to the country.自从她搬到乡下以来就未来看过我。

It is /has been two years since we began to use the machine .我们使用这部机器已经有两年了。= We began to use the machine two years ago.=We have used the machine for two years.

注意：(1)It is/has been＋一段时间＋since引导的时间状语从句(自从做某事已经有多长时间了)

It is /has been a long time since we got married.自从我们结婚以来已经有很长时间了。=We have been married for a long time.=We got married a long time ago.

注意：（2）It will be/was＋一段时间＋before从句(多久之后才…… before引导时间状语从句)。

It will (not )be a long time before he comes back.他很久以后/不久就会回来。

It was three years before he came back.三年以后她回来了。=He came back after three years.

It will be three years before he comes back.三年以后他才会回来。=He will come back in three years.

7）When it comes to tennis,you can`t beat her.说到网球，你是赢不了她的。

8）The first time I saw him ,he is still a child.我之一次见到他时，他还是个孩子。

9）be doing———when—正在—突然—

had( just) done———when—当---完成---

be about to do———when—正要干—突然—

We were having dinner when someone knocked at the door.

I had just gone to bed,when the telephone rang.我刚上床 *** 铃响了。

I was about to go out when it began to rain.我刚要出门天开始下雨了。

10．as随着---

As time went by/passed,her hair grew gray.随着时间的流逝她的头发变得花白了。=With time going by/passing, her hair grew gray.

2.地点状语从句，常用引导词where

Generally,air will be polluted where there are factories.一般来说，有工厂的地方空气就会受到污染。注意：where 不能换成in which

He lives where I used to work.他住在我原来工作的地方。

3.原因状语从句，常用引导词because与why对应,since既然/由于，常放在句首,as常表示众所周知的原因,for不是说明直接原因而是加以推断

Since/Now that everyone is here,let`s begin.既然每个人都到了我们就开始吧。

特别引导词now that=since既然，一般放在句首

As the weather is so bad ,we have to delay our journey.由于天气那么差我们不得不推迟旅行。

He is absent today,because he is ill.他今天没来因为他病了。

He must be ill, for he is absent.他肯定是病了因为他没来。

4.目的状语从句，常用引导词so that,in order that

特别引导词in case以防for the purpose that为了

The boss asked the secretary to hurry up with the letters so that/in order that/ for the purpose that he could sign them.老板要秘书快点处理信件以便他能签字。

Take a taxt in case you are late for the meeting.坐出租车去免得开会迟到。

5.结果状语从句，常用引导词so+形容词或副词+that---,such+名词+that---如此的---以至于---,但so many/much/few/little（少）+名词+that---,such a+形容词+名词（可数名词单数）+that---=so +形容词+a+名词（可数名词单数）

He got up so early that he caught the first bus.他起的那么早以至于赶上了头班车。

It is such good weather that we all want to go out playing.这么好的天气我们都想出去玩。

There are so many people in the street that we can`t walk fast.街上有那么多人以至于我们走不快。

He is such a young boy that he can`t go to school.他是那么小的男孩不能上学。= He is so young a boy that he can`t go to school.=The boy is so young that he can`t go to school.= The boy is too young to go to school.= The boy is not old enough to go to school.

6.条件状语从句，常用引导词if, unless除非

特别引导词as/so long as只要on condition that 条件是

Let`s go out for a walk unless you are too tired.=If you are not too tired,let`s go out for a walk.你如果不太累让我们出去散会儿步。

You will certainly succeed so/as long as you keep on trying.只要你坚持努力一定会成功。

I will lend you the bike on condition that you must keep it clean.我把自行车借给你条件是你一定要保持它干净。

7.让步状语从句，常用引导词though/although虽然,even though/even if即使

特别引导词as（虽然）用在让步从句中必须倒装，提到句首的名词前不能有冠词while（虽然）,no matter---,wherever,whenever 等

Although/though it`s raining,they are still working in the field.虽然天下雨，但他们仍在地里干活。=It is raining,but they are still working in the field.

The old man always enjoys swimming even if/even though the weather is rough.即使天不好那位老人总是喜欢游泳。

Much as I respect him ,I can`t agree to his proposal.虽然我很尊敬他，我不能同意他的建议。=Though I respect him ,I can`t agree to his proposal.

Child as he is ,he speaks English well.=Though he is a child , he speaks English well.他虽然是个小孩，英语说得却很好。

No matter what you may say, he won`t listen.=Whatever you say, he won`t listen.无论你说什么他都不会听。

While I understand your viewpoint,I can`t agree with you.虽然我理解你的观点，我还是不能同意你。

8.比较状语从句，常用引导词as同级比较than不同程度比较

特别引导词the +比较级---，the+比较级（越---就越---），倍数表达法

The house is as large as that one.

The house is not as/so large as that one.=The house is *** aller than that one.

The more you exercise ,the healthier you will be.你越是锻炼就越会健康。

倍数表达法

1)倍数+as+原级+as-- The room is three times as big as that one.

2)倍数+比较级+than--- The room is three times bigger than that one.

3)倍数+the+size/height/length/width +of--- The room is three times the size of that one.

9.方式状语从句，常用引导词as像---一样

特别引导词as if /as though好像—当时—用过去式，好像干过—用过去完成时

Please try to pronounce the wod as Ido.请跟我发这个单词的音。

He talks/talked as if,as though he was my father.他谈起话来就像是我爸爸。（不是我爸爸）

He talks/talked as if/as though he had been there. 他谈起话来就像去过那儿。（没去过）

注意：It looks as if it is going to rain.天看上去要下雨了。（符合事实）

9.as用法小结

1）当---时候 As /When I was walking down the street,an America asked me for directions to the nearest station.当我走在街上时，有个美国人问我往最近的车站怎么走。

2)一边—一边---He sang songs as he was taking a bath. 他一边洗澡一边唱歌。

3）随着--- As she grew older,she became more impatient.她年龄越大，变得越不耐烦。

4）由于，因为--- As I had a cold ,I was absent form school.因为我感冒了，所以没去上学。

5）依照---，像---一样 I`ll do as you advise.我会照你的忠告去做。

6）正如，正像 As is known to all,as we all know

7）虽然，但是

Much as I respect him ,I can`t agree to his proposal.虽然我很尊敬他，我不能同意他的建议。=Though I respect him ,I can`t agree to his proposal.

Child as he is ,he speaks English well.=Though he is a child , he speaks English well.他虽然是个小孩，英语说得却很好。

趁热打铁，小试牛刀

1. It' s quite a time ______ Yao Ming got injured, but it won't be long ______ he returns to the court.

A. since before B. after when C. before since D. that when

2. How can you expect him to make any progress ______ you never give him a chance to have a try？

A. if B. unless C. even though D. until

3. What an unforgettable experience! I'll write it down ______ it is still fresh in my memory.

A. since B. while C. after D. until

4. I found her nice and honest ______ I saw her.

A. for the first time B. the first time C. on the first time D. at first

5. — I wonder how much you charge for your services.

— The first two are free ______ the third costs $30.

A. while B. until C. when D. before

6..The old man prefers to live____ the climate is mild.

A that B. in which C. what D. where

7. ______ online shopping attracts a certain group of people, there will always be some who enjoy shopping for their groceries.

A. When B. As C. If D. While

8.She had just finished her homework ______ her mother asked her to practice playing the piano yesterday.

A. when B. while C. after D. since

9. _____the day went on, the weather got worse.

A. With B. Since C. While D. As

10.____you’ve got a chance, you might as well make full use of it

A. Now that B. After C. Although D. As soon as

石安老师特别提醒：天寒地冻，码字不易，写稿很难。希望大家好好珍惜，认真对待！如有任何疑问，请私信或评论留言。若有不足之处，也请大家及时指出，批评指正！