状语从句
状语从句在句中相当于副词做状语, 又叫副词性从句。状语从句分为时间状语从句、条件状语从句、地点状语从句、原因状语从句、目的状语从句、让步状语从句、结果状语从句和 比较状语从句。掌握状语从句应当从引导词入手，注意引导词的词义,引导状语从句的引导词都有词义，所以，了解引导词的意思尤为重要。引导词按意义分为九类:
1）时间 when , as , while , till , until , before , after , since
2）地点 where
3）原因 because , as , since , now that
4）条件 if , unless , once . so （as） long as . in case
5）让步 though , whatever （--ever ） as , even though , even if
6）目的 so that , in order that
7）结果 so ... that
8）比较 than , as .. as
9）方式 as , as if
一、时间状语从句 引导时间状语从句的连接词除上述外还有：
1）till, not … until …, until, before, since
Don’t get off the bus until it has stopped.
He waited for his father until（till）it was twelve o’clock.
It will be five years before he returns from England.
常用句型：It is/was/will be …before…要过多久才……
It isn’t /wasn’t/won’t be…before…没有多久就……
It will be another five days before we finish this task.
It is not long before I forgot it all.
2）hardly / scarcely … when, no sooner … than, as soon as, once表示“一……就”
3）directly, immediately, the moment, the minute that… 一……就
He made for the door directly he heard the knock.
4）each time, every time, by the time（到……为止）
Each time he came to my city, he would call on me.
注意：表示未来情况，主句用将来时，从句用现在时。
二、让步状语从句
（1）although与though可以引导让步状语从句，不能与but连用，但可以与yet连用。
Although they are poor,（yet）they are warm-hearted.
（2）even if或even though引导让步状语从句，表示“即使”，“纵然”，用来使人注意下文所强调内容的性质。
I’ll get there even if（though）I have to sell my house to get enough money to go by air.
（3）no matter后接上who、what、where、how等疑问词，也可以在这类疑问词后面加上ever构成whoever、whatever、wherever、however等。
Don’t trust him, no matter what / whatever he says.
Whoever breaks the law will be published.
No matter how hard the work is, you’d better try to do it well.
（4）as也可以引导让步状语从句。要用倒装。
Child as（though）he is, he knows a lot.
Much as I like it, I won’t buy.
Try as he would, he couldn’t lift the heavy box.
三、原因状语从句：because, for, as, since, now that
（1）表示不知道的原因时用because,即说话人认为听话人不知道，因此because从句是全句最重要的部分，通常它被置于主句之后。
You want to know why I’m leaving? I’m leaving because I’m full.
for虽然表示不知道的原因，但其语气较because要弱得多，是可说可不说的话，它只能置于主句之后，这时，for是并列连词。如果不是因果关系，而是对前面主句的内容加以 解 释或推断时，只能用for。如：It’s morning now, for the birds are singing.（很显然，鸟叫不可能是“现在已是早上”的原因。）
（2）表示已经知道的原因时用as或since,即某种原因在说话人看来已经很明显，或已为听话人所熟悉，因此它是句中不很重要的部分。since要比as正式一些，它们通常被置于语句之前，但有时却相反。
Seeing all of the children already seated, he said,“Since everyone is here, let’s start.”
（3）下列情况下只能使用because:
1）在回答why的问句时；
—Why did you leave in such a hurry? ---Because I had something urgent to deal with.
2）在用于强调句型时；
3）被not所否定时。
四、地点状语从句：where, wherever
Make a mark wherever you have any questions.
We will go where the Party directs us.
五、目的状语从句：that, so that, in order that
六、结果状语从句：that, so that, so … that, such … that …
注意：so + 形容词/副词 + that从句；such + 名词 + that从句。
Jenny is such a clever girl that all the teachers like her very much.
=Jenny is so clever a girl that all the teachers like her very much.
七、方式状语从句：as, as if（though）
I’ll do as I am told to.
It looks as if it is going to rain.
八、比较状语从句：than（比）, as（与…一样）
It rains more often in Shanghai than in Beijing.
The result was not as/so good as I had expected.
常用句型：the+比较级,the+比较级
The busier he is, the happier he feels.
九、条件状语从句：if, unless, so （as） long as, in case, once, a far as, on condition that.
As/ So long as we don’t lose heart, we’ll find a way to overcome the difficulty.
We’ll let you use the room on condition that you keep it clean and tidy.
As/ So far as I know, he is an expert on DNA.
注意if与unless的区别：不能用and连接两个unless从句，即不能有… unless …,and unless … 。但if … not and if … not却不受此限制。
You won’t lose your weight unless you eat less and unless you exercise more.（×）
但可以说 … unless you eat less and exercise more.
十、注意状语从句中从句的省略现象
（1）连接词 + 过去分词 Don’t speak until spoken to.
Pressure can be increased when needed.
Unless repaired, the washing machine is no use.
（2）连词 +现在分词Look out while crossing the street.
（3）连词 + 形容词/其他 常见的有it necessary、if possible、when necessary、if any等。
1. _______ others say, the Professor is sure that his theory is correct.
A. No matter B. It doesn’t matter C .Whatever D. What
2. I won’t give you any help____ you tell me the truth. It’s none of my business.
A. unless B. since C. if D. even if
5. — How do we do the cleaning?
— Do it___: Sweep the floor, wipe the desks, rub the windows and put everything in order.
A. as usual B. as follows C. as following D. like that
8. The roof fell _____he had time to dash into the room to save his baby.
A. before B. as C. after D. until
12. Scientists say it may be five or ten years_______ it is possible to test this medicine on human patients.
A. since B. before C. after D. when
13. We called the First — Aid Center_______ the traffic accident happened.
A. immediately B. shortly C. quickly D. hurriedly
14. ______ you keep on, you'll succeed. Wish you success in the examinations.
A. When B. No matter how hard C. So long as D. Now that
15. — Do you think we can get there on time? — Yes, _______ the car doesn’t break down.
A. even if B. unless C. until D. so long as
16. — Let Jack take the place. He’s older and should be more experienced.
— I don’t think so. A man doesn’t necessarily grow wiser_______ he grows older.
A. because B. that C. than D. as
17. ______you understand this rule, you will have no further difficulty.
A. While B. Once C. Though D. Unless
18 .— Was he pleased to hear the news? —_______ Pleased, even excited.
A. No more than B. More than C. More D. More or less
21. Of course they were later than expected; but_______ they were in time to start the game.
A. at all B. after all C. in all D. for all
22. I’ll give him your message______ he comes back from lunch.
A. until B. as soon as C. while D. before
23. He whispered to his wife_______ he might wake up the sleeping baby.
A. so that B. on condition that C. for fear that D. so long as
24. — May I come in right now? — Certainly, ______only two are allowed at a time.
A. so B. therefore C. but D. unless
25. I don’t believe ____ he says now. He is a cheat.
A. no matter what B. everything C. whatever D. how
2. _______ journalism seems like a good profession (职业), I would prefer to be a teacher.
A. Although B. Even C. No matter D. Now that
3. _______ he wants to fire you, I suggest you stop wearing sport clothes in the office.
A. If B. Since C. Until D. Unless
5. _______ I prefer a color TV, I have to buy a black and white one this time.
A. As B. Since C. Because D. Although
7. You can speak French well _______ you practise it with a Frenchman every day.
A. unless B. although C. as long as D. so that
8.The lady will have to wait all day _______ the doctor Works faster.
A. if B. unless C. whether D. that
9. The class went on with the story _______they had left it before the holiday.
A. where B. which C. in which D. when
10. Would you like to have a break _______ shall we go on with the work?
A. and B. then C. therefore D. or
11. We didn’t plan to meet. We meet ___ in the street.
A. by the way B. by chance C. on purpose D. in surprise
14. — Could you tell me where Jim lives?
—______Jim used to live next door to us, and now he is living in another
town.
A. At the time B. At one time C. At a time D. At times
21. Dr. Bethune began to work _______ he arrived at the front.
A. the moment B. by the time C. before D. at the moment
22. This class named _______Lei Feng is one of the best classes in this school.
A. in honour of B. in the place of C. in favour of D. in the way of
24. —I am sorry I didn’t do a good job. —Never mind. _______you have tried your best.
A. Above all B. In all C. At all D. After all
25. Whoever is_______ advanced can pass this test.
A. more and more B. more or less C. no more D. any the less
1. Tim is in good shape physically he doesn't get much exercise.
A. if B. even though C. unless D. as long as
2. The school rules state that no child shall be allowed out of the school during the day, ______
accompanied by an adult.
A. once B. when C. if D. unless
3. you may have, you should gather your courage to face the challenge.
A. However a serious problem B. What a serious problem
C. However serious a problem D. What serious a problem
5. John thinks it won’t be long he is ready for his new job.
A. when B. after C. before D. since
6. Today, we will begin ________we stopped yesterday so that no point will be left out.
A. when B. where C. how D. what
1. She had just finished her homework her mother asked her to practice playing the piano yesterday. A. when B. while C. after D. since
2. My parents don’t mind what job I do I am happy.
A. even though B. as soon as C. as long as D. as though
3. You can’t borrow books from the school library ______ you get your student card.
A. before B. if C. while D. as
4. All the dishes in this menu, otherwise stated, will serve two to three people.
A. as B. if C. though D. unless
6. __ unemployment and crime are high, it can be assumed that the latter is due to the former.
A. Before B. Where C. Unless D. Until
1.— Did you return Fred’s call? —I didn’t need to ____ I’ll tomorrow.
see him
A. though B. unless C. when D. because
2. I’m sorry you’ve been waiting so long, but it’ll still be some time ____
Brian gets back.
A. before B. since C. till D. after
3. We’ll have a picnic in the park this Sunday _____ cold.
it rains or it’s very
A.since B. if C. unless D. until
5. Nancy enjoyed herself so much she visited her friends in Sydney last year.
A.that B.which C.when D.where
6. You’d better not leave the medicine kids can get at it. A.even if B.which C.where D.so that
1．______ I failed in English a third time, I had no doubt about my gift for foreign languages.
A. By the time B. Until C. After D. Unless
2．— That boy enjoys drawing very much.
—____, I have never seen anyone else who is as enthusiastic about drawing as
he is.
A. As long as I have traveled B. Traveled so much as I have
C. As I have traveled so much D. Much as I have traveled
3．I found him sitting in his chair，completely a magazine．
A．absorbing B．being absorbed in C．absorbed in D．absorbing in
4．You should report any incident, _____ serious or minor it is.
A．what B．how C．whether D．however
5．—How do you think I should receive the reporter?—____ you feel about him, try to be polite.
A. How B. What C. Whatever D. However
6．The field research will take Joan and Paul about five months; it will be a long time _____ we meet them again.
A. after B. before C. since D. when
7．Lily’s mobile phone was left in a taxi accidentally, never again.
A. to find B. to be found C. finding D. being found
8． the world economy is in difficulty, we can see, the people of China are full of hope．
A．As；不填 B．Because；which C．Though；as D．With；不填
9．____ has an interest in the lecture can go for a ticket from the office next to the gate of the
lecture room, _____ the lecture will be given．
A．No matter who, where B．Whoever; where C．Anyone; in which D．Those who; in which
10．I will do it more carefully ______ it takes me hours.
A. even B. till C. even if D. if
11．_________Sun Yue has been selected into the L.A. Lakers（湖人队）, he might as well make full use of the chance.
A. Now that B. After C. Although D. As soon as
12．The medicine works more effectively ______ you drink some hot water after
taking it.
A. as B. until C. although D. if
13．Most children need encouragement in time of failure _______ they can cheer up again.
A. so that B. in case C. because D. if
15．____ you have expressed your determination , you should act immediately.
A. Now that B. Even though C. In order that D. Until
16．--- It’s a long time __________ I saw you last.
--- Yes, and what a pity it is now that it will be a long time _______ we see each other again.
A. before;since B. since; when C.since;before D. when;before
17．It must be kept in mind that lifelong study can you survive in the highly competitive society.
A. only when until When
B. until then C. only through D.
18．Don’t be afraid of asking your teachers for help ____ it is needed.
A. as B. since C. unless D. when
19．This study shows that ______ languages may differ, the order in which young kids learn the parts of speech appears to be the same across different languages.
A. since B. so C. while D. but
20. We try and give them __ they want, ___ their religion is, so that they can face death without fear.
A. no matter what; no matter what B. no matter what; whatever
C. whatever; no matter whatever D. whatever; whatever
22．The government has taken some measures to solve the shortage of electricity, but it may be some time _________ the situation improves.
A. since B. when C. unless D. before
24．______, I have never seen anyone who’s as capable as John.
A. As long as I have traveled B. Now that I have traveled so much
C. Much as I have traveled D. As I have traveled so much
25．Nearly a month had gone by they showed some sign of giving up the price for which they had held out.
A. before B. while C. until D. so that
26．______the Internet is bridging the distance between people, it may also be breaking some families or will cause other family problems.
A. When B. If C. While D. Since
27．It was four o’clock in the afternoon _______ they got to the station.
A. that B. since C. when D. until
28．_____ many difficulties they may come across, they’ll keep up and hold on until they get them over. A. However B. Whatever C. Whichever D. Whenever
状语从句（答案）
1. C 2. A 5. B 8. A 12. B 13. A 14. C 15. D16. D 17. B 18. B
21. B 22. D 23. C 24. C 25. C
2. A 3. B 5.D 7. C 8. B 9. A 10. D11. B 14. B 21. A 22. A 23. D 24. D 25. B
1.答案：B解析：句意为：“尽管Tim不经常锻炼，但他身材很好。”前后是让步转折关系，故选B项。
2. 答案:D解析：句意应为“学校规章规定：除非有成年人陪同，否则孩子们在校期间不能出学校。”表示“除非”用unless。该句式构成了“连词+过去分词”结构。
3. 答案：C解析：根据句意“无论你有多么严重的问题，你都应该鼓起勇气面对挑战”，而however表让步时其顺序应是：however + 形容词 + 主语 + 谓语。however做连接副词，相当于no matter how,后接形容词或副词，意为“无论、不管” ，引导让步状语从句，其序为“however+形容词、副词+主语+谓语”。
5. 答案：C.解析：考查状语从句。所填词引导状语从句，构成It（will）be+时间段+状语从句，意思是：过多久才将......，选C。
6. 答案B解析：由句意：今天，为了不遗漏要点，我们从昨天结束的地方开始。where 引导地点状语从句
1. 答案 A 解析 根据主从句的动词时态可知主句谓语动词的动作在从句谓语动词之前已经完成，引导词的意思是：当……的时候，选A。
2. 答案 C 解析 根据题干意思可知此处是条件状语从句，引导词意思是：只要，选C。even though引导让步状语从句，意思是：即使；as soon as引导时间状语从句，意思是：一……就……；as though引导方式状语从句，意思是：仿佛，好像。
3. 答案 A
4. 答案 D解析 考查状语引导词(unless)。全句意思是：在这份菜单上的所有菜，除非另外说明，会给二到三个人食用。
6.答案 B
1. 答案 D解析 因为I’ll see him tomorrow是I didn’t need to的原因，故该空格处用because表示原因。
2. 答案 A解析 句意为:对不起让你久等了，但是还得再过一段时间Brian才回来。故空格处须用before表示“在……之前，直到……才……”。
3. 答案 C解析 句意为：我们这个星期天要去公园野餐，除非下雨或天气非常冷。unless除非。
5. 答案 C解析 句意为：Nancy去年在悉尼拜访朋友时玩得很开心。when引导时间状语从句。本题干扰性最强的是A项，so...that引导结果状语从句，但根据语境，这里并没有因果关系的含义。
6. 答案 C解析 句意为：你最好不要把药放在孩子们能够到的地方。where在句中引导地点状语从句。
1. 答案 B 2. 答案 D 3. 答案 C 4. 答案 D 5. 答案 D 6. 答案 B
7. 答案 B 8. 答案 C 9. 答案 B 10. 答案 C 11. 答案 A 12. 答案 D
13. 答案 A 15. 答案 A 16. 答案 C 17. 答案 C 18. 答案 D
19. 答案 C 20. 答案 D 22. 答案 A 24. 答案 C 25. 答案 A
26. 答案 C 27. 答案 C 28. 答案 A
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