2010届高三英语一轮复习必备精品：sb3(unit1-16)专题三

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2010届高三英语一轮复习必备精品SB3 (unit1——unit16)专题三 重点句型高考解读 ( http: / / www.21cnjy.com / )
SB3 (unit1——unit16)
专题三 重点句型
高考解读
2010高考命题趋向分析：
【高考导航】
1. It was not until that 是重点句型，翻译为“直到......才”，也就是强调句型对not until的强调。考点主要是这个句型中的that.还有不可以和not until放于句首要求倒装混淆，即：这个句型中所加的句子都不倒装。它是高考的热点。06年全国卷III，07浙江卷，09江西卷都对它进行了考查。2010年考生在备考中应牢记这一句型，掌握准它的特点，高考有可能再进行考查
2. 倍数+as +adj +as 结构是重点结构，也就是倍数的表达方法。主要考点是倍数的位置以及和as......as结构的顺序。还要注意as......as结构中间加原级倍数一般要放在最前面，除非是修饰倍数的词，如more than或less than。08陕西卷和09辽宁卷都对它进行了考查。另外考生还应该注意倍数的另外两种表达方法: (1)表示“几倍大小（长短；数量）”，由“倍数+ the size（length，amount……）of ”结构组成 (2) 表示“……比……大几倍”，由“倍数+形容词（副词）比较级”结构组成. 05年上海卷对前者进行了考查。2010年有可能出现以上考点。考生应予以重视。还要记住：倍数一般要放在最前面，除非是修饰倍数的词，如more than或less than
3．whoever/whatever/wherever/ however等引导的从句，一直是高考的热点。它们都可以翻译成无论.......可以引导让步状语从句及名词性从句。 08年全国卷I考查了whatever, 08年辽宁卷考查了however.2010年考生应重视这一知识点，还要把握几点区别（1）Whichever和whatever whichever无论哪一个，任何一个，有限定范围。whatever 无论什么，无限定范围 （2）whoever和whomever whoever 在句中做主语，whomever在句中做宾语。关键是看后面缺什么成分
4. have no choice but to do 非常重要。意思为“别无选择只能做某事”。考查重点主要是but to do，还要注意当but前面有实义动词do的各种形式时，to要省略一定要注意是实义动词，如：You have nothing to do but sit.还应该注意不同的形式。2010年有可能进行考查
5.It’s no use/ good doing sth 意思为“做某事是无用的” 主要考点是主语it 以及后面加doing。06年全国卷III对它进行了考查。另外还要注意与它较类似的几个句型：there is no doubt that ...... 是毫无疑问的there is no need to do 没有必要做某事, It is no wonder that 难怪，05年湖北卷对这一句型进行了考查。2010年有可能出现以上考点
6.before是一个重点单词，翻译为“在......之前”“ ......才”，“不久就”“还没来得及”，考点主要是它的意思。它一直是高考的热点，04福建卷，04天津卷，05年广东卷，05年山东卷，06年四川卷，06福建卷，07安徽卷，08年北京卷都对它进行了考查 2010年考生应重视这一考点。注意它的不同意思
【真题品析】
（09江西卷）It was _____ he came bank from Africa that year _________ he met the girl he would like to marry.
A. when; then B. not; until C. not until; that D. only; when
【答案】B not until句型的强调句式。通过翻译句意可知
【点拨】掌握 It was not until that 即可
（09辽宁卷）Peter’s jacket looked just the same as Jack’s, but it cost his.
A. as much twice as B. twice as much as
C. much as twice as D. as twice much as
【答案】B
【点拨】掌握倍数+as +adj +as 结构，注意倍数的位置
（08全国卷I）The lawyer seldom wears anything other than a suit ______ the season.
A. whatever B. wherever C. whenever D. however
【答案】A 根据句意排除即可。
【点拨】 掌握这一类词的意思。
（08辽宁卷）______ hungry I am, I never seem to be able to finish off this loaf of bread.
A. Whatever B. Whenever C. Wherever D. However
【答案】D。根据句意排除。
【点拨】 掌握这一类词的意思。
(08陕西卷) Ten years ago the population of our village was that of theirs.
A. as twice large as B. twice as large as
C. twice as much as D. as twice much as
【答案】B
【点拨】掌握倍数+as +adj +as 结构，还要注意人口多应用large
（06全国卷）It is no _______ arguing with Bill because he will never change his mind.
A. use B. help C. time D. way
【答案】 A 考查固定句型“It’s no use doing sth”
【点拨】对于重点句型要熟练掌握
（2006 山东卷）_______ teams wins on Saturday will go through to the national championships.
A. whoever B. however C. whatever D. whichever
【答案】D 考查连词意思辨析。whoever为无论谁，however无论怎样，whatever无论什么，whichever无论哪一个，根据句意“无论哪一个队赢得比赛”,所以选D
【点拨】 照句意排除
（2005 江西卷）In peace，too, the Red Cross is expected to send help ________ there is human suffering.
A.whoever B.however C. whatever D. wherever
【答案】D考查连词意思辨析。whoever为无论谁, however无论怎样，whatever无论什么, wherever无论哪儿，根据句意应选D
【点拨】掌握同类词的辨析
(05湖北卷)He hasn’t slept for three days.________ he is tried out.
A. There is no point B. There is no need C. It is no wonder D. It is no way
【答案】C考查句型意思辨析。There is no point没有必要做某事 = there is no need It is no wonder 难怪 ,根据句意，选出C
【点拨】掌握句型意思辨析，按照句意排除
（04福建）Scientists say it may be five or six years_________ it is possible to test this medicine on human patients.
A. since B. after C. before D. when
【答案】C 考查before的意思。
【点拨】宾语从句中含有句型“It + may be + 时间段 + before...”，表示“也许要过多久才……”，故选择答案C。根据句意选出答案
（04天津）It was evening______ we reached the little town of Winchester.
A. that B. until C. since D. before
【答案】D。本题考查连词before表示“在……之前就……”的用法
【点拨】根据句意“我们到达小镇Winchester之前就已经是傍晚时分了”。故选D
（05山东）It was some time ___________we realized the truth.
A. when B. until C. since D. before
【答案】D。before用于句型“it was +时间段+ before …” 表示 “过了（多长时间）才……”。【点拨】根据句意“过了一段时间我们才意识到事情的真相”。故正确答案为D项
(05广东)The American Civil War lasted four years _______ the North won in the end.
A. after B. before C. when D. then
【答案】B。考查连词before表示“在……之后才……”之的用法
【点拨】根据本句含义“美国南北战争持续了四年，北方才最终取得胜利”，可知本题应选B
（05北京春） It is almost five years ________ we saw each other last time.
A. before B. since C. after D. when
【答案】B考查的是“It be +时间段 + since引导的时间状语从句”结构，
【点拨】根据句意“自从上次我们见面以来已经近五年没有见了”，故选择答案B
（05福建） — Did Jack come back early last night
— Yes. It was not yet eight o’ clock________ he arrived home.
A. before B. when C. that D. until
【答案】B考查的是句型“It be +时间点 +when引导的时间状语从句”
【点拨】根据句意“他昨晚回家时还不到8点”，故选择答案B
( 06四川卷)—Why didn't you tell him about the meeting
— He rushed out of the room _________ I could say a word.
A. before B. until C. when D. after
【答案】A。本题考查连词before表示“……还没来得及……就……”的用法。
【点拨】 根据句意“我还没来得及说一句话，他就冲出了房间” 选出A
（06福建卷）—How long do you think it will be ______China sends a manned spaceship to the moon
—Perhaps two or three years.
A. when B. until C. that D. before
【答案】D 考查before 用于句型 “It + will be + 时间段 + before...”句型中，表示“要过多久…才…”。
【点拨】根据句意“你认为中国要过多久才可以向月球上发射载人飞船？”选出D
（07安徽卷）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
【答案】 B 考查before 用于句型 “It + will be + 时间段 + before...”句型中，表示“要过多久…才…”。
【点拨】掌握熟练before的含义
（08北京卷）I’m sorry you’ve been waiting so long, but it’ll still be some time ____ Brian get back.
A. before B. since C. till D. after
【答案】A 考查“it’ll be some time before ”这一句型。“过一段时间才……”
【点拨】根据句意“你等了这么长时间我很抱歉，可要过一段时间Brian才能回来”。选出A
知识网络 ( http: / / www.21cnjy.com / )
【考点概览】倍数+ as ...... as 结构It was not until that 直到......才 ( http: / / www.21cnjy.com / )
倍数+ as ...... as 结构
It was not until that 直到......才
Whoever, whatever, however，wherever等引导的从句
have no choice but to do 别无选择只能
what if 倘若......怎么办/又怎样
It’s no use/ good doing sth 做某事是无用的
suggest that sb should do 建议某人应该......
It was ......before 从句 多久就......
As time went by 随着时间的流逝
so that 以便，为了
精讲精练考点一 倍数+ as +形容词+ as ( http: / / www.21cnjy.com / )
考点一 倍数+ as +形容词+ as
【基础过关】……是……倍 ，倍数放在前面
Our factory is twice as big as theirs. 我们的工厂是他们的三倍。
I have three times as many as you. 我有你三倍那么多。
【拓展延伸】
其他两种表达倍数的方法：
（1）表示“几倍大小（长短；数量）”，由“倍数+ the size（length，amount……）of ”结构组成。
The earth is forth-nine times the size of the moon. 地球是月亮的49倍大
(1) 表示“……比……大几倍”，由“倍数+形容词（副词）比较级”结构组成
This box is three times bigger than that one. 这个盒子比那个盒子大三倍
The grain output is 8 percent higher this year than that of last year.
今年比去年粮食产量增加8%。
【点拨】
高考的考点一般放在倍数的位置上，一般情况下，都要放在最前面，除非是修饰倍数的，如more than, less than.特别要注意：倍数+ as +形容词+ as，高考考得较多
【典型例题】
Americans eat_ ________as they actually need every day.
　　 A. twice as much protein
　　 B. twice protein as much twice
　　 C .twice protein as much
　 　D .protein as twice much
【答案】A
【点拨】考查“倍数+ as +形容词+ as”
考点二 It was not until that
【基础过关】直到......才
It was not until his mother came back that he went to bed.
直到母亲回来，他才去睡觉
It was not until his father came in that the boy began to prepare his lessons.
直到父亲进来，他才开始准备备课
【拓展延伸】
not until句型及其倒装。not until放于句首，要求主句倒装，从句不变
Not until the accident happened did I realize my foolishness.
直到事故发生，我才意识到我的愚蠢。
Not until his father came back, did he close the door.
【点拨】在It was not until that中，两个句子都不倒装
【典型例题】
It was not until the rain stopped ______ I went home.
A. that B. when C.before D. as
【答案】A。
【点拨】考查固定句型It was not until that
考点三Whoever, whomever,whatever, whichever,however，wherever等引导的从句
【基础过关】
都翻译为无论......,如wherever，无论何地，引导名词性从句和状语从句
It has been the same result whichever way you do it.
不管你怎么做，结果都一样
I’d like to see you whenever it is convenient. 在你方便的时候，我想来看你
Wherever you go , I’ll follow you. 无论你去哪儿，我都会跟着你
However hard she studies, she can’t catch up with him.无论她多努力学习，还是赶不上他
【拓展延伸】
（1） whichever/whatever
whichever无论哪一个，任何一个，有限定范围
whatever 无论什么，无限定范围
Whatever you do , I will be in favor of you.无论你做什么，我都会支持你
You can take whichever you like among the apples.这些苹果中，你可以拿你喜欢的任何一个。
（2） whoever/whomever
whoever 在句中做主语
whomever在句中做宾语
Whoever breaks the law will be punished. 无论谁触犯法律都会受到惩罚。
You may dance with whomever you like at the dancing party.舞会上你想跟谁跳舞都行
【典型例题】
_______ student gets the first place will get a beautiful gift.
A. whoever B. however C. whatever D. whichever
【答案】D 考查词义区别。“无论哪个学生得到第一名都可以得到一个漂亮的礼物”，所以选D
【点拨】区分连词词义，按照句意排除
考点四have no choice but to do
【基础过关】
别无选择只能做......
I have no choice but to wait. 我别无选择，只能等着。
We have no other choice than to agree with them.
我们除了同意他们之外，没有别的选择
【拓展延伸】
当 but 前有实义动词do的各种形式时，to要省略。
You have nothing to do but wait.你没有其他事做，只能等。
You did nothing but watch TV.
你什么也不做只会看电视
【典型例题】
I had nothing to do but ______the newspaper.
A. to read B. read C. reading D.to reading
【答案】. B.【点拨】由于but前有do,并且是实义动词，所以要省略to，故选B。考点五what if 【基础过关】 ( http: / / www.21cnjy.com / )
【点拨】由于but前有do,并且是实义动词，所以要省略to，故选B。
考点五what if
【基础过关】
倘若......怎么办/又怎样
What if it is true 如果这是真的又该如何呢？
What if I fail! 即使我失败了又怎样
【拓展延伸】
only if 要是怎么样，就好了,后加句子用虚拟
If only = as long as 只要
If only I had another chance. 要是我再有一次机会就好了
If only he had been here. 要是他当时在这儿就好了。
Only if I get a job will I have enough money to go to school.
我只有找到了工作才有足够的钱上学
【典型例题】
--Do you have a minute I've got something to tell you.
--Ok,______ you make it short.
A.now that B.if only C.only if D.every time
【答案】C
【点拨】考查only if只要，表条件
考点六 It’s no use/ good doing sth
【基础过关】
做某事是无用的
It’s no use talking with him.和他谈话根本没有用。
It’s no good going there and they left
再去那儿没有用了，他们已经离开了
【拓展延伸】
It is no wonder that 难怪
No wonder you’ve got a headache----- you drank too much wine.
你喝了那么多酒，难怪你会头痛
No wonder people say that computers are taking over the world.
难怪人们说计算机正逐渐接管这个世界
There’s no doubt that毫无疑问
There’s no doubt that you will lose the match.
你们会输掉比赛是毫无疑问的
There’s no need to do 没有必要做某事
There’s no need for you to do so.你没有必要那样做。
【典型例题】
It’s ________ that he’ll sign the contract tomorrow.
A. no wonder B no use D. no wonder D. no need
【答案】C 考查句型辨析
【点拨】牢记句型区别，根据意思选出答案
考点七 suggest that sb should do
【基础过关】
建议某人应该.....( should可以省略)
I suggested that we （should ）go home. 我建议我们回家
They suggested that we set out at once.
他们建议我们应该立刻出发
【拓展延伸】
（1）suggest doing sth. 建议做某事
I suggested going home. 我建议回家
Tom suggested selling the house but Ann was against it.
汤姆建议把房子卖了，但安不同意。
（2） It's suggested that…… 有人建议……
It's suggested that we （ should ） put on a short play at the party.
有人建议我们在晚会上演一个短剧
It has been suggested that Robert should go to Chicago and try to find a job there. 有人建议罗伯特到芝加哥去，设法在那里找个工作。
（3）名词 suggestion 的用法与其词根动词用法相似。
按英语习惯，suggest的派生名词suggestion也具有与其词根动词相似的用法，suggestion 作“建议”解，后面跟同位语从句时，以及 suggestion 用作主语，后面跟表语从句时，从句中的谓语动词均用虚拟语气。
My suggestion is that the work should be started at once.
我的建议是立即动工
The monitor's suggestion that she should come another day has not been accepted.
班长提出的她改天来的建议还是没有被接受。
（4）suggest与advise
① 都可接动名词作宾语
I suggested / advised putting off the sports meet. 我建议将运动会延期.
They suggested / advised waiting until the proper time. 他们建议(我们)等到恰当的时机才行动.
②都可接that 宾语从句,that从句用should+动词原形,should可以省略.
She suggested / advised that the class meeting (should) not be held on Saturday. 她建议班会不要在星期六举行
We suggested / advised that he (should) go and make an apology to his teacher. 我们建议他去向老师道歉.
③ advise 可接动词不定式复合宾语, suggest不可以.
I advised him to give up the foolish idea. = I suggested his / him giving up the foolish idea. 我建议他放弃那愚蠢的念头
接不定式不用suggest和advise
④suggest有"提出"的意思.advise 没有
He suggested a different plan to his boss. 他向老板提出了一个不同的计划.
Xiao Wang suggested a way to solve the problem. 小王提出了一个解决这个问题的办法.
⑤suggest 有"暗示、表明"的意思.其主语往往是事物,而不是人.
接名词或动名词作宾语
The simple house suggested a modest income. 这座简朴的房子表明(房主的)收入并不高.
Her pale face suggested bad health. 她脸色苍白,看来身体不好.
The thought of summer suggests swimming. 一想到夏天就使人们联想到游泳
接宾语从句,从句用陈述语气.不可以用should do
The decision suggested that he might bring his family. 这个决定表明他可以把家属带来.
The expression on his face suggested that he was very angry. 他脸上的表情表明他很生气.
Opinion polls suggest that only 10% of the population trusts the government.
民意测验表明只有10%的人信任政府
He often came to the theater， but his attitude suggested he was not really interested in the play.
他经常来剧院，可是他的态度表明他并不是真的对戏剧感兴趣
(5)用should do进行虚拟的句型及动词
① 在主语从句中用来表示惊奇、惋惜、理应如此等，其谓语形式是"should(可省) ＋动词原形"，常用于以下三种句型中。
句型一：It is necessary (important, natural, strange, etc) that…
句型二：It is a pity (a shame, no wonder, etc) that…
句型三：It is suggested (requested, proposed, desired, etc) that…
It is strange that he (should) have done that.
It is a pity that he (should) be so careless.
It is requested that we (should) be so careless.
② 在宾语从句中用于 suggest, propose（提议）, insist, desire(渴望，要求), demand, request, order, command, recommend(建议)等动词后的宾语从句中，表间接的命令和建议其谓语形式是"(should) + 动词原形"如：
I suggest that we (should) go swimming.
It was proposed that we go to the station to meet our guests.
有人建议我们去车站接客人
He insisted that we (should) accept these gifts.
他一定要我们收下这些礼物
He desired that we leave soon.
他希望我们尽快离开
The boss demanded that Mary (should) finish it within a week.
老板要求玛丽在一周内完成它
I requested he should come before ten.
我要求他十点以前来
The judge ordered the prisoner should be transferred to the county jail.
法官命令将这囚犯转押县监狱
I command that he go at once.
我命令他立即就去。
（3） 在表语从句中，表示间接的命令，要求、请求、建议、决定等，主句中的主语通常是 suggestion, proposal, request, order, 等。从句谓语形式是"(should)＋动词原形"。如：
His suggestion is that we (should) leave at once.
The request was that you leave for Beijing.
要求是你离开去北京。
（4） 在同位语从句中，谓语形式是"(should)＋动词原形"。如：
We received order that the work be done at once.
我们收到命令工作要立刻完成。
Mr. Paine made a request that I should help him.
佩恩先生要求我帮助他
（5） 在 It is（high） time that …句型中，其谓语动词形式是"动词的过去式"或
"should ＋动词原形", should 不可省
It's time (that) we went / should go to school
到上学的时间了。
【典型例题】
Her pale face suggested that she ____________ ill, and her parents suggested that she _____________ a medical examination.
A. be; should have B. was; have
C. should be; had D. were; was
【答案】B 考查suggest的用法
【点拨】掌握全suggest的用法，第一个suggest翻译为“表明”，不用虚拟。第二个为“建议，后面应用（should） do进行虚拟
考点八It was ......before 从句
【基础过关】
多久/不久就......
It won’t be long before we meet again.不久我们就会再见面
It will be 10 minutes before class is over. 过十分钟，这堂课就结束了
It was five years before we met again. 过了五年，我们才再见面。
【拓展延伸】
before的用法
1. before引导时间状语从句，表示"在......之前"。
We do want to buy something now before prices go up. 在物价上涨之前，我们现在的确想买一些东西
2. before可译为"......才"。
You must finish your homework before you go out to play basketball. 你必须完成作业才能出去打篮球。
3. before可译为"还没有来得及......就"。
He had measured me before I could get in a word. 我还没有来得及插话，他就给我量好了。
4. before在一段时间状语之后，可译为"......之后"。
Sun Shuwei studied hard at school and trained hard for five years before he came to the national team. （高考写作题）孙淑伟在学校努力学习，刻苦训练，五年之后进入了国家队。
5. before在long之后，在肯定句中可译为"在......很久之前"，在否定句中可译为"没多久......就"。
He dressed his suit long before the end of the first scene. （高考完形填空题）
他在第一幕远没有结束之前就穿好了服装。
It won't be long before you regret what you've done.
不久你就会后悔自己的所做所为。
6. before有时可译为"免得......"。
Do it now before you forget. 现在就做，免得忘了。
7. before 可译为"只有......才能"。（但主句和从句须有情态动词must, can等）。
We must study hard before we can serve the people effectively. 我们只有努力学习，才能有效地为人民服务
Much must still be done before our dreams can come true. 我们仍需要做很多，才能把我们的梦想变成现实。
8. before还可译为"宁愿......而不"
He will die of hunger before he will steal. 他宁可饿死，也不愿去偷。
The guerrillas would fight to death before they surrendered. 游击队员宁愿战斗到底，也不投降。
9. before也可译为"不知不觉"。
Time passed quickly. Before we knew it, we had to say goodbye to the workers. （高考写作题）时间过得真快，不知不觉我们该向工人告别了
Twenty years passed before we knew it. 不知不觉，二十年过去了。
【典型例题】
He made a mistake, but then he corrected the situation _____ it got worse.
A. until B. when C. before D. as
【答案】C。
【点拨】 由made a mistake和转折词but可知本题句意是“他出了差错, 但没等其进一步恶化，他就调整了局势”。故正确答案为C项。
考点九As time(the days) went by 【基础过关】 ( http: / / www.21cnjy.com / )
【基础过关】
随着时间的流逝/变化
As time went by, she grew more and more beautiful.
随着时间的变化，她变的越来越漂亮了
As time went on, the theory she had stuck proved correct .
随着时间的推移，她所坚持的理论被证明是正确的
注意：go by 可以换成pass by ,go on 等
【拓展延伸】
as的用法
　一、as作连词的用法
　　1. as...as的用法
　　as...as意为"和……一样"，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+ adj./ adv. +as。例如：
　　(1)This film is as interesting as that one.这部电影和那部电影一样有趣
　　(2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅
　　其否定式为not as/so +adj./ adv. +as。例如：
　　This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用。
　　若有修饰成分，如twice, three times, half, a quarter等，则须置于第一个as之前。例如：
　　Your bag is twice as expensive as mine.你的袋子比我的贵一倍
　　几个关于as...as的常见句型：
　　(1)as...as possible
　　Please answer my question as soon as possible.请尽快回答我的问题
　　(2)as...as usual/before
　　She looks as pretty as before.她看起来和以前一样漂亮
　　(3)as long as... (引导条件状语从句) 长达，只要
It took us as long as three years to carry out the plan.我们花了长达三年的时间才完成这项计划
As long as you study hard, you will make great progress.
只要你努力学习，你就会取得巨大进步
　　(4)as far as 远到，据/就……
He walked as far as the railway station yesterday evening.昨天傍晚，他一直散步到火车站。
As far as I know, the meeting is to be held.据我所知，会议即将举行。
　　(5)as well as 和……一样（好）
　　She cooks as well as her mother does.她烧菜烧得跟她母亲一样好
　　2. as用作连词引导时间状语从句
　　as与when，while都是引导时间状语从句的从属连词，含义都是"当……的时候"。但它们有区别：用when时，从句的动作可以与主句的动作同时发生，也可以先于主句的动作发生；用while时，从句的动作为一过程，主句动作与从句动作同时进行或在从句动作过程中发生；用as时，主句和从句的动作同时发生，具有延续的含义例如：
　　(1)It was snowing when he arrived at the construction site.他到达工地时，天正在下雪
　　(2)He was watching TV while his mother was cooking.他母亲做饭时他在看电视
　　(3) You will grow wiser as you grow older.你会随着年龄的增长而越来越聪明
　　3. as用作连词引导原因状语从句
　　as，because，since都可以表示因果关系，连接原因状语从句，含义是"因为，由于"，但它们有区别：because表示的语气最强；as一般放在句首，语气较弱，较口语化；since常常用在书面语中，表示多为对方已知的、或稍加分析便可得知的原因，有时可译作"既然"。例如：
　　(1) He will succeed because he is in earnest.他一定会成功，因为他很认真
　　(2) Since you are so sure of it he”ll believe you.既然你对此如此有把握，他会相信你的。
　　(3) As rain has fallen, the air is cooler.因为下过雨，空气比较清爽
　　4. as作连词引导让步状语从句
　　as与although (或though)，however (或no matter how)等都可以引导让步状语从句，含义是"虽然，尽管"，但它们有区别：although语气稍正式些，可放在句首，也可放在句中，主句中不能再用but，但可以用yet；as所表示的语气较强，引导的让步状语从句用倒装语序；however引导让步状语从句时，它的后面可跟形容词或副词，也要用倒装语序例如：
　　(1) Although he is quite old, he still jogs every day.他虽然年纪相当大，仍然每天慢跑。
　　(2) Strange as it may seem, nobody was injured in the accident.这次意外虽然显得令人不可思议，却没有人受伤
　　(3) However hard he may try, he will not attain his goal.无论他怎样努力也达不到目标
　　二、as作关系代词的用法
　　关系代词as引导定语从句时，既可以单独使用，也可以与其他词连用，其用法要比that和which更为复杂
　　1. as引导定语从句与其他词连用
　　①用于the same...as结构中
　　This is the same book as I read last week.这本书和我上周读的那本是一样的
　　②用于such...as结构中
　　I don”t like such books as he recommends.我不喜欢他推荐的那些书
　　③用于"so +adj. + a/an + n. (单数) + as "结构中
　　I am not so strong a man as I was.我已经没有从前那么强壮了
　　2. as单独引导定语从句
　　as单独引导定语从句时，先行词可以是一个词，也可以是一个句子或短语。翻译为“这，这一点”例如：
　　(1) She is late, as is often the case.她迟到了，这是经常的事 (先行词是整个主句)
(2) To shut your eyes to facts, as many of you do, is foolish.对事实视而不见--你们好多人都是如此的愚蠢。(先行词是不定式短语)
三、as作介词的用法
　　as作介词，意思是"作为"，"以……身份"例如：
　　He came to China as a tourist five years ago.他五年前以游客的身份来过中国
　　四、as作副词的用法
　　to the same degree or amount; equally "相同地"，"同样地"例如：
　　They don’t have as many airplanes.他们没有同样多的飞机
【典型例题】
_____ is known to all，China will be an _____ powerful country in 20 or 30years'time．
A．That；advancing B．This；advanced C．As；advanced D．It；advancing
【答案】C 考查as引导的非限定性定语从句
【点拨】as引导非限定性定语从句，翻译为“这一点”，根据句意“这一点是众所周知的，中国在二十年或三十年后会成为一个发达国家”，选出答案C
考点十so that
【基础过关】
以便，为了=in order that
注意：引导目的状语从句时，表示“以便；为了”，从句中常使用can /could /may /might /should等情态动词或助动词；引导结果状语从句时，从句中一般不用can和may等词，在so that前可以用逗号，意思是“因此;所以” 如：
The little boy saved every coin so that he could buy his mother a present on Mother's day.
这个小男孩平时节省每一个硬币以便他可以在母亲节给母亲买一个礼物。
She bought a digital camera online she would save a lot of time。
她在网上买了一个数码相机为了节省时间
【拓展延伸】
(1) so …….that 与such……that
① so …….that 中的so 为副词，后跟形容词或副词。such……that中的such 为形容词，后跟名词，（名词前可有形容词修饰）如：
He became so weak that he couldn’t say a word.
他变的如此的弱以至于不能说一句话
It was such a sunny day that we could go out for a walk.
天气如此的晴朗，所以我们可以出去散步
② 当that前面有many,much,few,little 修饰时，只可以用so ,不可以用such
She made so may mistakes that she cried after the exam.
她犯了如此多的错误以至于在考试后她大哭起来
提醒:当little意思为“小”的时候，要用such,不用so
It is such a little sheep that it can’t run fast.
这只绵羊如此的小以至于不能跑快
③当that 前面是单数可数名词时，并且前面有形容词修饰，两者可以互换
He is such a kind man that we all like him.
He is so kind a man that we all like him.
他如此善良以至于我们都喜欢他。
（2）so …….that中的so 放于句首，要求后面的主句进行部分倒装
So fast did he run that I couldn’t catch up with him.
他跑得如此快以至于我赶不上
【典型例题】
There is _______ little water that it is not enough for _____ many people.
A. such; so B. so;so C. such;such D. so;such
【答案】B such和 so的区别 【点拨】掌握两者的词性，此处 little 意思为少，所以要用so修饰同步练习题 ( http: / / www.21cnjy.com / )
【点拨】掌握两者的词性，此处 little 意思为少，所以要用so修饰
同步练习题
1. （09北京卷）You may use the room as you like ___ you clean it up afterwards.
A. so far as B. so long as C. in case D. even if
2.（09陕西卷）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.I insisted that he ________ at once.
A. be gone B. go C. would go D. might go
4.You may use it as you like you return it on time .
A only if B if only C what if D if what
5.It is highly desirable that a new chairman for the committee.
A. will be elected B. is elected C. elect D. be elected
6. ______ leaves the room last ought to turn off the lights.
A. Anyone B. The person C. Whoever D. Whomever
7. It is important that we ________.
A. shall close the window before we leave B. will close the window before we leave
C. must close the window before we leave D. close the window before we leave
8.I will take _______book you reject.
A. whichever B. whatever C.wherever D. whenever
9.It is requested that every student ______ a plan for the nest semester.
A. makes B. make C. will make D. would make
10 .It was _____ he came back ____ he found his money was stolen.
A. when; then B. not; until C. not until; that D. only; when
11 The librarian recommended that the professor_______ the newly published books.
A. borrow B. borrowed C. should have borrowed D. borrowing
12. It is quite natural that my coming late again ________ them very angry.
A. had made B. would make C. makes D. make
13 _______I don't know anyone at the party
A. only if B. What if C. if only D. if
14.We surely desire that the tour leader____us immediately of any change in the travel schedules.
A. inform B. informs C. informed D. has informed
15. (07上海春季) _______ tomorrow, our ship will set sail for Macao.
A. However the weather is like B. However is the weather like
C. Whatever is the weather like D. Whatever the weather like is
16.Everybody has arrived. It’s time we ______ the meeting.
A. would start B. had started C. shall start D. should start
17. You can eat food free in my restaurant_______ you like.
A.whenever B. wherever C. whatever D.however
18. I had no choice but _______ the first bus,
A. catch B. catching C. caught D. to catch
19. Our monitor requested that ________.
A. all the class studied more carefully the problem
B. the problem was more carefully studied
C. with great care the problem could be studied
D. all the class study the problem more carefully
20.Not until the teacher came in, ___________________.
A. did the students stop talking B. the students stopped talking
C. stopped talking the students D.does the students stop talking
21.It is necessary that Mark________ in time to attend the meeting.
A. come B. came C. comes D. will come
22 . His tired face suggested that he ________ really tired after the long walk.
A. had been B. was C. be D. should be
23There are many toys, you can take _______you like.
A. whatever B. whichever C. however D. whenever
24.It ________ long before we _______ the result of the experiment.
A. will not be...will know B. is...will know
C. will not be...know D. is...know
25.The leader insisted that the plan was reasonable and we ________carry it out.
A. should B. may C. be D. could
26.I think it’s high time the children _______________ to school.
A. go B. are going C. will go D. went
27.All the doctors in the hospital insisted that he ____________ badly wounded and that he ____________ at once.
A. should be; be operated on B. were; must be operated on
C. was; should be operated D. was; be operated on
28. My sister advised me that I ________ accept the invitation.
A. could B. must C. should D. might
29.Do you think of Wang Fang's suggestion that he ________ Mr. Li to the party
A. will invite B. have invited C. is invited D. invite
30.（08安徽卷）-----Do you have a minute I’ve got something to tell you.
-----Ok, ______ you make it short.
A. now that B. if only C. so long as D. every time
31.It’s ________ that you were so sleepy, you hadn’t slept for four days.
A. no need B. no wonder C no doubt D. no use
32．_____ ，the Great Wall came into being in Qin Dynasty．
A．It's clear B．We all know C．As we all know D．Which we all know
33．_____ is known to everybody，the moon travels round the earth once every month．
A．It B．As C．That D．What
参考答案 1---5 BCBAD 6----10 CDABC 11----15 ADBAD 16---20 DADDA 21----25 ABBCA 26-----30 DCCDC 31----33 BCB ( http: / / www.21cnjy.com / )
26-----30 DCCDC 31----33 BCB
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