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英语状语从句是高考的重点语法项目之一，该语法项目的考点是连词。下面就结合连词考点进行一些分析和归纳。
一、判断引导时间状语从句的连词
考点介绍：可以引导时间状语从句的连词有：before, after, as, when, while, till, until等从属连词；by the time, as soon as等短语型连词；no sooner…than…, not…until…, hardly…when…等搭配型连词；each time, every time, next time, the moment/instant/minute等名词型连词；immediately等副词型连词。
典型考例：
1.---Where’s that report?
---I brought it to you ________ you were in Mr. Black’s office yesterday.（07北京）
A.if B.whenC.becauseD.before
析：B。该空表示“当……的时候”，因此应填when引导时间状语从句。
2.It is difficult for us to learn a lesson in life ____we’ve actually had that lesson. （07天津）
A.untilB.afterC.sinceD.when
析：A。由语境逻辑可知，人的一生难以吸取教训的状态一直延续到真正有了教训，因此该空应填until引导时间状语从句。
3.He was told that it would be at least three more monthshe could recover and return to work. （07江西）
A.whenB.beforeC.sinceD.that
析：B。由语境逻辑可以推出在他恢复健康重新工作之前要过至少三个月，因此该空应填before引导时间状语从句。
4.The field research will take Joan and Paul about five months; it will be a long time _______ we meet them again. （07安徽）
A.afterB.beforeC.since D.when
析：B。该空表示在我们再见面之前要过很长时间，因此应填before引导时间状语从句。
友情提醒：使用when引导时间状语从句时谓语动词可以是持续性的也可以是短暂性的，而使用while引导时间状语从句时谓语动词必须是持续性的；until, till引导时间状语从句时谓语动词必须为持续性动词，而使用not…until…搭配引导时间状语从句时谓语动词必须是短暂性的，该结构也可改为not until结构，并置于句首引导不完全倒装句型；使用by the time, every time, each time, next time, immediately等连词引导时间状语从句时不能受汉语习惯影响在其后再加when等连词，使用the moment/instant/minute引导时间状语从句时不能受汉语习惯影响在前面加in, on, at等介词，在后面加when等连词；时间状语应用一般现在时代替一般将来时。
二、判断引导地点状语从句的连词
考点介绍：可以引导地点状语从句的连词有连接副词where或wherever。
典型考例：The village has developed a lot we________learned farming two years ago. （07福建）
A.when B.whichC.thatD.where
析：D。由语境逻辑可以推出这个村子在我们两年前学习农业技术的地方发展得很快，因此该空应填where引导地点状语从句。
三、判断引导让步状语从句的连词
考点介绍：让步状语从句常由though, although,as, even if, even though, while, whatever, however、whoever等从属连词引导。whatever应接名词，但也可以单独使用；however应接原级形容词、副词，
典型考例：
1．_________ I really don’t like art, I find his work impressive. （07山东）
A.AsB.SinceC.IfD.While
析：D。该空表示“尽管”，因此应填While引导让步状语从句。
2.Many of them turned a deaf ear to his advice, _______ they knew it to be valuable. （07浙江）
A.as if B.now that C.even though D.so that
析：C。该空表示“即使”，因此应填even though引导让步状语从句。
友情提醒：though,although,as等连词引导让步状语从句时不可以再和but连用；as引导让步状语从句时常将表语、动词、副词提前，构成特殊倒装句型，当表语为名词时应去除不定冠词再行前移。
典型考例：_______,his idea was accepted by all the people at the meeting. （07重庆）
A.Strange as might it sound
B.As it might sound strange
C.As strange it might sound
D.Strange as it might sound
析：D。句中as引导让步状语从句，应将表语提前。
四、判断引导条件状语从句的连词
考点介绍：条件状语从句通常由if,unless,as/so long as,on condition that等从属连词引导。
典型考例：
1.I won’t call you, ________ something unexpected happens. （07全国卷I）
A.becauseB.whetherC.unlessD.while
析：C。由空档前后的语境逻辑可以推出该空表示“除非”，因此应填unless引导条件状语从句。
2.You will be successful in the interviewyou have confidence. （07福建）
A.beforeB.onceC.untilD.though
析：B。自信是成功采访的条件，因此该空应填once引导条件状语从句。
3.Most birds find it safe to sleep in the trees, but ________they have eggs or young chicks, they don’t use a nest. （07湖南）
A.whyB.howC.unlessD.where
析：C。由they have eggs or young chicks与they don’t use a nest之间的逻辑关系可以推出该空表示“除非”，因此应填unless引导条件状语从句。
4.Small sailboats can easily turn over in the water ______ they are not managed carefully. （07上海）
A.thoughB.beforeC.untilD.if
析：D。由语境逻辑可知，没有被小心驾驶是帆船在水中容易倾覆的条件，因此该空应填if引导条件状语从句。
友情提醒：条件状语从句应用一般现在时代替一般将来时。
典型考例：The number of deaths form heart disease will be reduced greatly if people_______to eat more fruit and vegetables. (NMET2004上海)
A.persuade B.will persuade
C.be persuaded D.are persuaded
析：D。will be reduced表明该空为一般将来时，因用于条件状语从句，因此应由一般现在时代替。
五、判断引导原因状语从句的连词
考点介绍：原因状语从句常由从属连词because, as, since, now that等引导。
典型考例：Parents should take seriously their children’s requests for sunglasses_________eye protection is necessary in sunny weather.（NMET2004上海）
A.because B.through C.unless D.if
析：A。分析语境逻辑可知，该空表示“因为”，因此应填because引导原因状语从句。
友情提醒：引导原因状语从句的连词不可以再和并列连词so连用。
六、判断引导目的状语从句的连词
考点介绍：目的状语从句通常由从属连词that, so that, in order that, in case, for fear that等引导。
典型考例：
1.Leave your key with a neighbor _______ you lock yourself out one day.（07北京）
A.ever since B.even if C.soon after D.in case
析：D。把钥匙留给邻居的目的是防止有一天把自己关在门外，因此该空应填in case引导目的状语从句。
2.My parents live in a small village. They always keep candles in the house_____there is a power out. （07重庆）
A.ifB.unlessC.in caseD.so that
析：C。他们在屋内时刻备有蜡烛是停电的时候用的，因此该空应填in case引导目的状语从句。
七、判断引导结果状语从句的连词
考点介绍：结果状语从句常由so that, so…that…, such…that…等短语性连词引导。使用so that引导结果状语从句时从句中通常不出现can,could等情态动词；使用so…that…结构引导结果状语从句时so后面应接原级形容词、副词；使用such…that…结构引导结果状语从句时，such后面常接名词；so…that…结构置于句首引导结果状语从句时常使用不完全倒装句型。
典型考例：that Marie was able to set up new branches elsewhere.（07陕西）
A.So successful her business was
B.So successful was her business
C.So her business was successful
D.So was her successful business
析：B。句中so…that…结构置于句首引导结果状语从句，因此应使用不完全倒装句型。
巩固性练习：
一、单项选择
1.I really don’t know how long it will be _________ his parents come back from abroad.
A.when B.untilC.before D.if
2.That day I didn’t recognize who the beautiful girl was __________ I got off the bus.
A.untilB.unlessC.beforeD.because
3.You should make a mark __________ you have a question to ask your teacher.
A.whichB.where C.thatD.unless
4.__________the Internet can offer us much useful information, it does bring the children much harm.
A.Because B.Since C.While D.When
5.I think __________ our teacher were here, he would not be able to work out this problem.
A.in case B.as ifC.so thatD.even if
6.__________subject you learn, I think that you should try your best to learn it well.
A.HoweverB.WhateverC.What D.Which
7.It is already very late, so __________ you may be, I’ll not let you in.
A.whoever B.whichever C.whomever D.whatever
8.__________difficult this problem may be, I’ll do what I can to work it out.
A.Whatever B.However C.Whichever D.What
9._________,Tom knows as many as five foreign languages and can speak them very well.
A.As he is a child B.As he is child
C.A child as he is D.Child as he is
10.You can’t pass the difficult but important exam _________ you make good use of your time to go over your notes.
A.once B.until C.unlessD.if
11._________you keep on working hard like this, I’m sure that you will succeed one day.
A.As well as B.As far as
C.As long as D.As soon as
12._________you have made a promise, you should try to carry it out.
A.SinceB.When C.WhileD.Unless
13.The middle-aged woman managed to get to the cinema half an hour ahead of time _________ she could get a good seat.
A.so thatB.as ifC.even ifD.in case
14.Before you leave, you should close all the doors and windows __________ there will be a storm.
A.in case B.as though
C.even though D.sothat
15.The girl went home in such a hurry __________ she forgot to take her schoolbag.
A.asB.thatC.whenD.because
二、将下列各句改为倒装句型
1.I didn’t go out until it stopped raining completely.
2.The young man had hardly got to the airport when the plane took off.
3.Though I want to watch this football match very much, I have no time to watch it. （将Though改为as）
4.The girl was so excited that she could hardly express herself.
5.He had no sooner got to the station than the train left.
key:
一、1.C。由语境逻辑可知，主人公不知道在他父母从国外回来之前还要过多久，因此该空应填before引导时间状语从句。
2.A。由语境逻辑可以推出那天主人公没有认出那个漂亮女孩的状态一直延续到其走下公共汽车，因此该空应填until引导时间状语从句。
3.B。由语境逻辑可知，主人公应在有问题问老师的地方做记号，因此该空应填where引导地点状语从句。
4.C。由语境逻辑可以推出该空表示“尽管”，因此应填While引导让步状语从句。
5.D。该空表示“即使”，因此应填even if引导让步状语从句。
6.B。该空表示“无论什么”且修饰名词，因此应填Whatever引导让步状语从句。
7.A。该空表示“无论谁”且做主语，因此应填whoever引导让步状语从句。
8.B。该空表示“无论多么”且修饰原级形容词，因此应填However引导让步状语从句。
9.D。句中as表示“尽管”，引导让步状语从句，因此应将表语提前，当表语为单数可数名词时应去掉不定冠词将其前移。
10.C。该空表示“除非”，因此应填unless引导条件状语从句。
11.C。由语境逻辑可以推出只要主人公像这样努力工作总有一天会成功，因此该空应填As long as引导条件状语从句。
12.A。该空表示“既然”，因此应填Since引导原因状语从句。
13.A。由语境逻辑可以推出中年妇女设法提前半小时赶到电影院的目的是为了获得一个好位置，因此该空应填so that引导目的状语从句。
14.A。由语境逻辑可知，主人公走之前关上所有门窗是为了防止有暴风雨，因此该空应填in case引导目的状语从句。
15.B。由语境逻辑可以推出这女孩回家的动作如此匆忙以致于忘了带上书包，因此该空应填that，构成such…that…结构引导结果状语从句。
二、
1.Not until it stopped raining completely did I go out.
2.Hardly had the young man got to the airport when the plane took off.
3.Very much as I want to watch this football match, I have no time to watch it.
4.So excited was the girl that she could hardly express herself.
5.No sooner had he got to the station than the train left.
一、判断引导时间状语从句的连词
考点介绍：可以引导时间状语从句的连词有：before, after, as, when, while, till, until等从属连词；by the time, as soon as等短语型连词；no sooner…than…, not…until…, hardly…when…等搭配型连词；each time, every time, next time, the moment/instant/minute等名词型连词；immediately等副词型连词。
典型考例：
1.---Where’s that report?
---I brought it to you ________ you were in Mr. Black’s office yesterday.（07北京）
A.if B.whenC.becauseD.before
析：B。该空表示“当……的时候”，因此应填when引导时间状语从句。
2.It is difficult for us to learn a lesson in life ____we’ve actually had that lesson. （07天津）
A.untilB.afterC.sinceD.when
析：A。由语境逻辑可知，人的一生难以吸取教训的状态一直延续到真正有了教训，因此该空应填until引导时间状语从句。
3.He was told that it would be at least three more monthshe could recover and return to work. （07江西）
A.whenB.beforeC.sinceD.that
析：B。由语境逻辑可以推出在他恢复健康重新工作之前要过至少三个月，因此该空应填before引导时间状语从句。
4.The field research will take Joan and Paul about five months; it will be a long time _______ we meet them again. （07安徽）
A.afterB.beforeC.since D.when
析：B。该空表示在我们再见面之前要过很长时间，因此应填before引导时间状语从句。
友情提醒：使用when引导时间状语从句时谓语动词可以是持续性的也可以是短暂性的，而使用while引导时间状语从句时谓语动词必须是持续性的；until, till引导时间状语从句时谓语动词必须为持续性动词，而使用not…until…搭配引导时间状语从句时谓语动词必须是短暂性的，该结构也可改为not until结构，并置于句首引导不完全倒装句型；使用by the time, every time, each time, next time, immediately等连词引导时间状语从句时不能受汉语习惯影响在其后再加when等连词，使用the moment/instant/minute引导时间状语从句时不能受汉语习惯影响在前面加in, on, at等介词，在后面加when等连词；时间状语应用一般现在时代替一般将来时。
二、判断引导地点状语从句的连词
考点介绍：可以引导地点状语从句的连词有连接副词where或wherever。
典型考例：The village has developed a lot we________learned farming two years ago. （07福建）
A.when B.whichC.thatD.where
析：D。由语境逻辑可以推出这个村子在我们两年前学习农业技术的地方发展得很快，因此该空应填where引导地点状语从句。
三、判断引导让步状语从句的连词
考点介绍：让步状语从句常由though, although,as, even if, even though, while, whatever, however、whoever等从属连词引导。whatever应接名词，但也可以单独使用；however应接原级形容词、副词，
典型考例：
1．_________ I really don’t like art, I find his work impressive. （07山东）
A.AsB.SinceC.IfD.While
析：D。该空表示“尽管”，因此应填While引导让步状语从句。
2.Many of them turned a deaf ear to his advice, _______ they knew it to be valuable. （07浙江）
A.as if B.now that C.even though D.so that
析：C。该空表示“即使”，因此应填even though引导让步状语从句。
友情提醒：though,although,as等连词引导让步状语从句时不可以再和but连用；as引导让步状语从句时常将表语、动词、副词提前，构成特殊倒装句型，当表语为名词时应去除不定冠词再行前移。
典型考例：_______,his idea was accepted by all the people at the meeting. （07重庆）
A.Strange as might it sound
B.As it might sound strange
C.As strange it might sound
D.Strange as it might sound
析：D。句中as引导让步状语从句，应将表语提前。
四、判断引导条件状语从句的连词
考点介绍：条件状语从句通常由if,unless,as/so long as,on condition that等从属连词引导。
典型考例：
1.I won’t call you, ________ something unexpected happens. （07全国卷I）
A.becauseB.whetherC.unlessD.while
析：C。由空档前后的语境逻辑可以推出该空表示“除非”，因此应填unless引导条件状语从句。
2.You will be successful in the interviewyou have confidence. （07福建）
A.beforeB.onceC.untilD.though
析：B。自信是成功采访的条件，因此该空应填once引导条件状语从句。
3.Most birds find it safe to sleep in the trees, but ________they have eggs or young chicks, they don’t use a nest. （07湖南）
A.whyB.howC.unlessD.where
析：C。由they have eggs or young chicks与they don’t use a nest之间的逻辑关系可以推出该空表示“除非”，因此应填unless引导条件状语从句。
4.Small sailboats can easily turn over in the water ______ they are not managed carefully. （07上海）
A.thoughB.beforeC.untilD.if
析：D。由语境逻辑可知，没有被小心驾驶是帆船在水中容易倾覆的条件，因此该空应填if引导条件状语从句。
友情提醒：条件状语从句应用一般现在时代替一般将来时。
典型考例：The number of deaths form heart disease will be reduced greatly if people_______to eat more fruit and vegetables. (NMET2004上海)
A.persuade B.will persuade
C.be persuaded D.are persuaded
析：D。will be reduced表明该空为一般将来时，因用于条件状语从句，因此应由一般现在时代替。
五、判断引导原因状语从句的连词
考点介绍：原因状语从句常由从属连词because, as, since, now that等引导。
典型考例：Parents should take seriously their children’s requests for sunglasses_________eye protection is necessary in sunny weather.（NMET2004上海）
A.because B.through C.unless D.if
析：A。分析语境逻辑可知，该空表示“因为”，因此应填because引导原因状语从句。
友情提醒：引导原因状语从句的连词不可以再和并列连词so连用。
六、判断引导目的状语从句的连词
考点介绍：目的状语从句通常由从属连词that, so that, in order that, in case, for fear that等引导。
典型考例：
1.Leave your key with a neighbor _______ you lock yourself out one day.（07北京）
A.ever since B.even if C.soon after D.in case
析：D。把钥匙留给邻居的目的是防止有一天把自己关在门外，因此该空应填in case引导目的状语从句。
2.My parents live in a small village. They always keep candles in the house_____there is a power out. （07重庆）
A.ifB.unlessC.in caseD.so that
析：C。他们在屋内时刻备有蜡烛是停电的时候用的，因此该空应填in case引导目的状语从句。
七、判断引导结果状语从句的连词
考点介绍：结果状语从句常由so that, so…that…, such…that…等短语性连词引导。使用so that引导结果状语从句时从句中通常不出现can,could等情态动词；使用so…that…结构引导结果状语从句时so后面应接原级形容词、副词；使用such…that…结构引导结果状语从句时，such后面常接名词；so…that…结构置于句首引导结果状语从句时常使用不完全倒装句型。
典型考例：that Marie was able to set up new branches elsewhere.（07陕西）
A.So successful her business was
B.So successful was her business
C.So her business was successful
D.So was her successful business
析：B。句中so…that…结构置于句首引导结果状语从句，因此应使用不完全倒装句型。
巩固性练习：
一、单项选择
1.I really don’t know how long it will be _________ his parents come back from abroad.
A.when B.untilC.before D.if
2.That day I didn’t recognize who the beautiful girl was __________ I got off the bus.
A.untilB.unlessC.beforeD.because
3.You should make a mark __________ you have a question to ask your teacher.
A.whichB.where C.thatD.unless
4.__________the Internet can offer us much useful information, it does bring the children much harm.
A.Because B.Since C.While D.When
5.I think __________ our teacher were here, he would not be able to work out this problem.
A.in case B.as ifC.so thatD.even if
6.__________subject you learn, I think that you should try your best to learn it well.
A.HoweverB.WhateverC.What D.Which
7.It is already very late, so __________ you may be, I’ll not let you in.
A.whoever B.whichever C.whomever D.whatever
8.__________difficult this problem may be, I’ll do what I can to work it out.
A.Whatever B.However C.Whichever D.What
9._________,Tom knows as many as five foreign languages and can speak them very well.
A.As he is a child B.As he is child
C.A child as he is D.Child as he is
10.You can’t pass the difficult but important exam _________ you make good use of your time to go over your notes.
A.once B.until C.unlessD.if
11._________you keep on working hard like this, I’m sure that you will succeed one day.
A.As well as B.As far as
C.As long as D.As soon as
12._________you have made a promise, you should try to carry it out.
A.SinceB.When C.WhileD.Unless
13.The middle-aged woman managed to get to the cinema half an hour ahead of time _________ she could get a good seat.
A.so thatB.as ifC.even ifD.in case
14.Before you leave, you should close all the doors and windows __________ there will be a storm.
A.in case B.as though
C.even though D.sothat
15.The girl went home in such a hurry __________ she forgot to take her schoolbag.
A.asB.thatC.whenD.because
二、将下列各句改为倒装句型
1.I didn’t go out until it stopped raining completely.
2.The young man had hardly got to the airport when the plane took off.
3.Though I want to watch this football match very much, I have no time to watch it. （将Though改为as）
4.The girl was so excited that she could hardly express herself.
5.He had no sooner got to the station than the train left.
key:
一、1.C。由语境逻辑可知，主人公不知道在他父母从国外回来之前还要过多久，因此该空应填before引导时间状语从句。
2.A。由语境逻辑可以推出那天主人公没有认出那个漂亮女孩的状态一直延续到其走下公共汽车，因此该空应填until引导时间状语从句。
3.B。由语境逻辑可知，主人公应在有问题问老师的地方做记号，因此该空应填where引导地点状语从句。
4.C。由语境逻辑可以推出该空表示“尽管”，因此应填While引导让步状语从句。
5.D。该空表示“即使”，因此应填even if引导让步状语从句。
6.B。该空表示“无论什么”且修饰名词，因此应填Whatever引导让步状语从句。
7.A。该空表示“无论谁”且做主语，因此应填whoever引导让步状语从句。
8.B。该空表示“无论多么”且修饰原级形容词，因此应填However引导让步状语从句。
9.D。句中as表示“尽管”，引导让步状语从句，因此应将表语提前，当表语为单数可数名词时应去掉不定冠词将其前移。
10.C。该空表示“除非”，因此应填unless引导条件状语从句。
11.C。由语境逻辑可以推出只要主人公像这样努力工作总有一天会成功，因此该空应填As long as引导条件状语从句。
12.A。该空表示“既然”，因此应填Since引导原因状语从句。
13.A。由语境逻辑可以推出中年妇女设法提前半小时赶到电影院的目的是为了获得一个好位置，因此该空应填so that引导目的状语从句。
14.A。由语境逻辑可知，主人公走之前关上所有门窗是为了防止有暴风雨，因此该空应填in case引导目的状语从句。
15.B。由语境逻辑可以推出这女孩回家的动作如此匆忙以致于忘了带上书包，因此该空应填that，构成such…that…结构引导结果状语从句。
二、
1.Not until it stopped raining completely did I go out.
2.Hardly had the young man got to the airport when the plane took off.
3.Very much as I want to watch this football match, I have no time to watch it.
4.So excited was the girl that she could hardly express herself.
5.No sooner had he got to the station than the train left.