1、从句专题从句引导词的确定从句引导词通常起两个作用引导和连接主从句在从句中作某种成分答题依据：看它在句中做什么成分、表达什么意义（一） 主语从句引导词：从属连词that, whether连接代词what, which, who, whom连接副词when, where, why, how1 That he is always ready to help others is known to all. 2 In some countries, _ is called “equality” doesnt really mean equal right for equal people.A which
2、 B what C that D one答案 B（二） 宾语从句引导词：从属连词that, whether, if连接代词what, which, who, whom(词尾加 -ever 加强语气)连接副词when, where, why, how1 By success, I dont mean _ usually thought of when that word is used.A what is B that we C as you D all is2 We agreed to accept _ they thought was the best tourist guide.A whi
3、chever B whoever C whatever D whomever3 The basic features of communication process are identified in one question: who says _ through what channel to whom?A what B how C when D such4 Although Anne is happy with her success, she wonders _ will happen on her private life.A this B that C it D what5 Th
4、ey always give the vacant seats to _ come first.A whoever B whomever C who D whom答案：ABADA（三） 表语从句引导词：从属连词that, whether, if连接代词what, which, who, whom连接副词when, where, why, howThats what they did. / why I didnt come.The question is whether we shall stay or not./ how we can get there./ who he is./ whom
5、he is looking for.The reason is (that) he is ill.（四） 同位语从句引导词：从属连词that, whether连接副词when, where, why, howthat无意义，不做成分，但不能省略同位语从句所修饰的名词被称为先行词。常见先行词有：idea, fact, news, hope, belief, thought, doubt, question以及表示“建议、命令、请求”的词（句中要用虚拟语气）The question whether it is right or wrong depends on the results. There
6、 was the question where we were to go.what we were to do.when we were to start.how we could get there. why we should help them.区别：同位语从句 解释、说明先行词定语从句修饰、限定先行词1 There are signs _ restaurants are becoming more popular with families.A that B which C in which D whose2 The mere fact _ most people believe n
7、uclear war would be madness does not mean that it will not occur.A what B which C that D why答案 AC(五)定语从句1 定语从句引导词起三个作用： 连接作用在从句中作某种成分替代先行词（因此从句中不能再有先行词或其代词）2 引导词：关系代词 that, which, who, whom, as, whose 关系副词when, where, why介词+关系代词 whichn.短语+ 从句：the moment/each time/the distance+that, which :先行词为事、物，在句
8、中可作主语、宾语；who, whom：先行词为人，在句中可作主语、宾语；whose：先行词为人、事、物，在句中作定语；as先行词被 the same, such 修饰或先行词本身就是 the same, such-引导非限定性定语从句，代替整个句子，在从句中作主语或宾语I still remember the day when / on which I met her for the first time.That was the year when /in which he was born.This is the room where they lived for ten years.th
9、at /which they lived in for ten years.in which they lived for ten years.As is well known, Rome is not built in a day.As we all know, Rome is not built in a day.This is the city _.A I like to visit it most B I like to visit mostC I most like to visit D I most like to visit itBeer is the most popular
10、drink among male drinkers, _ overall consumption is significantly higher than that of women.A whose B which C that D whatThe hours _ the children spend in their one-way relationship with TV people undoubtedly affect their relationships with real-life people.A when B on which C that D in which答案：BAC
11、3 只用 that： 先行词既包括人又包括物先行词前有不定代词修饰或先行词本身为指物不定代词 /复合不定代词时先行词前有表示唯一概念的词修饰时先行词被序数词、adj.最高级修饰时先行词为疑问 pron.时He talked loudly of the men and the books that attracted him.All that glitters is not gold. There is little/nothing that I can do.He is the only person that is reliable.Who that have studied with hi
12、m do not admire him?Nothing is difficult for one who sets his mind to it.4 介词+关系代词不定 pron./数词+ 介词+关系代词 which/whom/whose+n.解题依据：介词与关系代词（即先行词）为固定搭配介词与从句中某一词为固定搭配 Agriculture was a step in human progress _ which subsequently there was nothing comparable until our own machine age.A to B for C in D from
13、It is useful to be able to predict the extent _ which a price change will affect supply and demand.A from B to C for D with I bought a dozen eggs, _ broke when I dropped the box at the door.A six eggs B six eggs of themC six of them D six of which He introduced me to his students, _ offered to go wi
14、th me as a guide.A one of them B one student C one of whom D one of which The residents, _ had been damaged by the fire, were given help by the Red Cross.A all of their homes B all their homesC whose all homes D all of whose homes This is the theory _ which his experiment is based.A from B to C on D
15、 for 答案：ABDCDC（六）状语从句1 时间状语从句常见引导词：when, while, until / till, as, before, after, since, whenever, as soon as, once, each/ every timeno soonerthanhardly/ scarcelywhen 考点：when“正在这时before/ after: It is a long time before/ after since: It is/was since（完成时）until/ till notuntil强调句式：It is/was not until+从句+
16、that +主句not 提到句首，句子倒装Not until+时间状语（从句）+部分倒装的主句no soonerthan given (that)She was disappointed that her services had been overlooked by her superiors.Given her interest in children/Given (that) she is interested in children, Im sure teaching is the right career for her. Seeing (that) he was better, t
17、hey didnt send for the doctor.because 着重指直接的原因或理由，其所引导的从句为全句的重心，用以直接回答 why 的问题，在本组词中语气最强。既可放在句首，也可放在主句之后。Just because I dont complain, you mustnt suppose that Im satisfied.He had to ask his neighbor for a ride because his car was being repaired. as 多用于口语中，使用本词引导的从句时，主句为全句的重心，从句只是附带地指出原因或理由，语气比 becau
18、se 和 since 弱，通常用于句首，如放在主句后，所说明的原因一般是对方知道的。As he wasnt ready in time, we went without him.We remained at home as it was raining.for 着重指 附加或推断的理由、根据、解释，连接的是相对独立的并列句，不能用于句首。I asked her to stay to tea, for I had something to tell her.since 可放在句首或主句之后，有时与 as 同义，有让步的含义，着重指双方均已熟悉或稍加分析既可明白的理由，有时也指产生行动的自然原因，
19、口语中较为少用。Since everyone is here, lets begin our class.Since weve no money, we cant buy it.4 结果状语从句常见的引导词：so(并列句), that, so that; sothat; suchthat;It was so cold that the river had frozen.It was such an interesting story that I couldnt stop reading it. 5 目的状语从句常见引导词：that, so that; in order that; lest,
20、 for fear that; in case(虚拟语气)Man does not live that he may eat, but eats that he may live.Here is my telephone number so that you can call me when you arrive here next time.They had to get up very early in order that they wouldnt miss the express train.Ill be kind to her lest she decide to leave me.
21、He jotted the name down for fear that he should forget it.Heres some money in case you should need it.6 条件状语从句常见引导词：if, unless, as/so long as, in case, on condition that,providing/ provided (that)suppose/ supposing (that)You cant pass the exam unless you work harder.If it rains tomorrow, I will go t
22、o school by taxi.I can lend you my dictionary as long as you can keep it clean.Please let me know in case he comes.She would be prepared to come to the party, provided/ providing that she could bring her daughter.Supposing /Suppose all the doors were locked, how would you get into the house?7 让步状语从句
23、常见引导词：though, although, as, even if/ though, whilefor all that.（尽管） ；whetheror; no matter +特殊疑问词 / 特殊疑问词+-everEven if it is raining very hard, he would still go to take care of the young trees in the schoolyard.He is a good comrade for all that he may have shortcomings and faults.注： as 引导让步状语从句，须用倒装
24、语序。倒装情况：a 把从句中作表语的 adj./n.提到句首；若表语为单数可数名词，提前时要省略（即去掉）不定冠词b 把从句中作状语的 adv.提到句首c 有时把从句中的 谓语动词原形提到句首Difficult as the work was, it was finished on time.Child as he is, he can speak English fluently.Much as I respect him, I cant agree to his suggestion.Fail as he did, he would try again. though 引导让步状语从句可倒
25、装可不倒装；although 引导让步状语从句不能倒装Very late though it was, they went on working. /Though it was very late, they went on working.Air exists everywhere although we cant see it. no matter+特殊疑问词 / 特殊疑问词+-ever 引导让步状语从句，从句中有时要用虚拟语气：may+动词原形或直接用动词原形；有时还要用倒装语序。注意词序：no matter how/ however + adj./adv. +no matter wha
26、t/ whatever + n. + However rich people are, they always seem anxious to make money.No matter what difficulties we may have, we have confidence in ourselves.Whatever may come, we wont leave the work half done.Come what may, we wont leave the work half done.Whoever you be, you have no right to do such
27、 a thing. whetheror引导让步状语从句，常省略 whether，且把动词原形 be 提到句首。Be rich or poor, he is kind to everybody. (Whether he is rich or poor)Be friend or foe, the law regards him as criminal. (Whether he is a friend or a foe, )8 方式状语从句常见引导词：as, as if/ though(有时用虚拟语气)When in Rome, do as the Romans do.He looks as if
28、he is ill. (He is really ill.)He talks as if he were a scholar. (In fact, he is not a scholar.)He speaks as if he had seen it with his own eyes. (Actually, he didnt see it at all.)It looks as if it might rain.9 比较状语从句常见引导词：as/ soas; than; The more, the morethe sameas; the same as; suchas He knew abo
29、ut the newcomer as much as I did.He finished the exam earlier than his classmates did.She is the same age as you. We are not such fools as to believe him.The harder you work, the more achievement you will make.注意： 排斥问题China is larger than any other country in Asia.China is larger than any country in
30、 Africa. 替代问题：one/ones；that/those在比较从句中为了避免重复，常用 that/those, one/ones 代替前面出现的名词：that 指物，one 既可指人也可指物； that 可代替可数名词单数和不可数名词，those 代替可数名词复数；one 代替可数名词单数，ones 代替可数名词复数；重复的名词后面有 of 短语时，常用 that/those 代替；重复的名词前有形容词修饰时，常用 one/ones 代替。The up trains are fuller than the down ones.The engine of your car is bet
31、ter than that of mine. 比较对象一致、主谓一致及时态等问题The population of China is larger than America. (wrong)The population of China is larger than that of America. 倍数表达法 a 倍数+ 比较级+thanb 倍数+ n.+ as +原级+as/倍数+ as +原级+ n.+ asc 倍数+ n.短语（the + n.+ of）d 倍数+ that ofe 倍数+ what 从句注意：to增加到 ; by净增The room is three times as
32、 large as that one.这个房间是那个房间的三倍大。The room is three times larger than that one.这个房间比那个房间大三倍（是那个房间的四倍大） 。This river is four times the width of that one.这条河比那条河宽三倍。That city is now almost ten times its original size.现在那座城市几乎是它原来大小的十倍。The area of that continent is about twice that of this one.那个大洲的面积比这个
33、的大一倍。They produce 1000 cars with a total value more than 20 times what it was in 1980.他们生产了一千辆小汽车，总产值是年的二十倍还多。 级的修饰语a 比较级：表示一方超过另一方的程度或数量时，可在比较级前表示程度的状语，如 even, still, yet, rather, no, a lot, lots, a (good) bit, a little (bit), a great /good deal, slightly, still, much, many, all the, any, far, by f
34、ar 等；数词或其它表示数量的词（组）也可以用来修饰比较级。He is a head/5cm taller than Tom.注意：by far 通常用于强调最高级。用于比较级时，一般放在比较级的后面；如放在前面，应在二者中间加 the。He is taller by far than his brother.He is by far the taller of the two brothers.B 最高级：最高级可被序数词以及 much, by far, nearly, almost, by no means, not quite, not really, nothing like, far
35、 and away, very(不修饰 most)等词语修饰。very 置于定冠词或者物主代词之后，其它的加强语一般置于定冠词之前。She put on her very best dress.The Pacific is by far the largest ocean.This hat is by far/much/nearly/almost/not nearly/by no means/not quite/nothing like the biggest.How much did the second most expensive hat cost?10 类比状语从句常见引导词：what
36、/as（数字间的类比）A is to B what C is to D 为固定结构，表示 A 与 B 的关系和 C 与 D 的关系具有可比性。但是，如果 A，B，C，D 为数字时，则用 as 取代 what,表示比例上的相等。The people is to the Partys army what/as water is to fish.人民的军队离不开人民，就象鱼离不开水。Intellect is to the mind what sight is to the body.智力之于大脑，犹如视力之于躯体。Twelve is to three as four is to one.12 之于 3 等同于 4 之 1。Reading is to the mind what /as exercise is to the body.读书对于思想，好比运动对于身体一样。Leaves do for plants what/as lungs do for animals.叶子对于植物的作用，正如肺对于动物的作用一样。The blueprint is to the builder what/as the outline is to the writer.蓝图对于建筑设计师就象提纲对于作家一样。
