专四语法专项训练 状语从句
状语从句
考点1：时间状语从句
连接词：when, while, as, till/until, before, after, since, once, as soon as,
e very time, the moment, the minute, no sooner ..than hardly…when等
(1) whenever
1. Come and see me whenever _it is convenient to you____. (1997)
A. you are convenient
B. you will be convenient
C. it is convenient to
you D. it will be convenient to you
(2) No sooner than/ hardly ..when/ scarcely..when一 .就..用于句首要求倒装
1. The couple had no sooner got to the station _than____ the coach left.2009
A. when
B. as
C. until
D. Than
(3) 其它
1. I enjoyed myself so much _when___ I visited my friends in Paris last year. 2008
A. when
B. which
C. that
D. where
2.When __ the Atlantic Ocean cross the equator, the trade winds cause a flow of water to the west. (1991)
A. That
B. When
C. Where
D. Though
考点2：条件状语从句
连接词：if , unless so/as long as, on condition that（条件是），as (so) far as (据..所知), provided that（要是，如果），in case(假使，如果)，only if（只有）等
(2) only if只有
1._Only if ___ both sides accept the agreement _will___ a lasting peace
be establish ed in t his region.2004
A. Only if, will
B. If only, would
C. Should, will
D. Unless, would
(3) unless 除非
1. You won’t get a loan _unless_____ you can offer some security.1996
A. lest
B. in case
C. unless
D. other than
2. Unless___ I was very much mistaken, there was something wrong with Louise. 1995
A. Unless
B. As
C. Though
D. Since
3. _Unless____ their policy can be changed the future for that country will be indeed bleak. (1993)
A. Even if
B. Unless
C. Now that
D. As long as
4. We could go to a concert _unless____ you’d prefer to visit a museum. (1992)
A. if
B. because
C. unless
D. since
考点3：原因状语从句
连接词：Because, since, as (放句首) , for, now that(既然，由于）, when(既然), considering that（顾及到---）, seeing that（由于）。（都表示原因，语气依次减弱）
(1) in that=because
1. Men differ from animals _in that___ they can think and speak.2008
A. for which
B. for that
C. in that
D. in which
2. Barry has an advantage over his mother _in that___ he could speak French. (2001)
A. since that
B. in that
C. at that
D. so that
考点4：让步状语从句
连接词:though, although, as, even if/though, whatever, however, wherever, while等引导。
(1) while 尽管
1. _While_____I sympathize, I can’t really do very much to help them out of the difficulties. 2001
A. as long as
B. as
C. while
D. even
(2) as/though引导让步状从倒装
As/though引导让步状语从句时，必须将表语、状语或动词原形提到as前面。此时应注意：一、若提前的表语是没有形容词修饰的单数可数名词，要省略不定冠词；二、若提前的是动词原形(多为不及物动词)，与之连用的通常是may, might, will, would等，这些词都要保留在原来的位置上(主语后)。三、as引导的让步状语从句一定要倒装，though 引导的让步状语从句不一定要倒装，although引导的让步状语从句不要倒装。四、让步状语从句中，有though，although时，后面的主句不能有but，但是though 和yet可连用。
1. Fool __as__ Jerry is, he could not have done such a thing.2010/2002
A. who
B. as
C. like
D. that
2. __dull he may be, he is certainly a very success ful top executive.2006
A. Although
B. whatever
C. As
D. However
3. _Although he is a social ist________, Mr. Wells is scarcely in sympathy with the working class.2005
A. Although he is a social ist
B. Even if he is a social ist
C. Being
a social ist D. Since he is a social ist
4. David Singer, my friend’s father, though___raised and educated in New York, lived and lectured in Africa most of his life. 1993
A.who
B.if
C.while
D.though
(3) much as 虽然，尽管
1. Much as____ he wanted to go out with his friends at the weekend, he had to stay behind to finish his assignment.2008
A. Much though
B. Much as
C.As much
D. Though much
2. Much as_______I like economics I like sociology much better.2003
A. As much as
B. So much
C.How much
D. Much as
3. Much as____ he needed money for a new car, he decided not to borrow it from the bank. (1998)
A. Much as
B. Much though
C. As much
D. though much
(4) for all+n尽管
1. _For all his notable contributions____, he is ready to accept
suggestions from different source s. (1997)
A. Instead of his contributions
B. For all his notable contributions
C. His making notable contributions
D. However his notable contributions
(5) however+adj./adv.
1. However hard the task is____ he always tries his best to complete it on time. (1999)
A. However the task is hard
B. However hard the task is
C. Though hard the task is
D. Though hard is the task
考点5：地点状语从句: where/ wherever（wherever --- 无论哪里）
考点聚焦：地点状语从句和where定语从句的区别：
Tips: 判断是定语从句还是地点状语从句，要看从句前是否有先行词，有先行词的是定语从句，否则是状语从句。
考点6：方式状语从句
1. She did her work _as____her manager had instructed. 2002
A. as
B. until
C. when
D. though
考点7：结果状语从句
连接词：so that (=in order to), so…that, such…that（太…以至于）
(1) so much as that 到这样程度以致…
1. -----Does Alan like limburgers?2003
-----Yes. So much __as____ that he eats them e very day.
A. for
B. as
C. to
D. so
(2) such that达到这样的程度以致
1. The brilliance of his satires was _such that____make even his victims laugh. 1996
A. so as to
B. such as to
C. so that
D. such that
考点8：目的状语从句
连接词：so that, in order that, for fear that（为了防止）, lest（以防）
1. Loudspeakers were fix ed in the hall so that e very one_may have_ an opportunity to hear the speech.2006
A. ought to have
B. must have
C. may have
D. should have
完整版专四英语语法考点教学内容
完整版专四英语语法 考点
语法考点之一：虚拟语气 考点1. If从句中的虚拟语气 1、与过去事实相反：从句sb had done，主句sb would(should, could, might)+ have done； 2、省略if，从句的语序用到装，即将were, had或 should移至主语的前面，但否定词not不前移。 3、与将来事实相反：从句sb did (should+do或were+to do)，主句sb would (should, could, might)+do。 4、错综条件句：主句与从句的动作发生在不同的时间段。 比如：从句对过去虚拟，而主句对现在虚拟，即从句sb had done，主句sb would(should, could, might)+do； 考点2：表示建议、要求、命令等动词如insist, order, command, suggest, advise, propose, ask, require, request, demand引导的从句及it引导的相应的分词、名词和形容词从句，谓语用（should)+动词原形。 考点3：It is +advisable, essential, important, imperative, incredible等从句，谓语用（should）+动词原形。 考点4：it is (high/about) time that的结构中，从句使用一般过去式。例如: 考点5：much as"尽管，虽然"引导让步状语从句，从句中用would have done表示假设。 考点6：if only, wish, as if/as though引导从句， 与过去事实相反：had + done； 与现在事实相反：动词过去式； 与将来事实相反：could/would + do 考点7：would rather/sooner从句中 使用一般过去式或过去完成式 分别表示对现在或过去的虚拟 考点8：lest / for fear that+(should ) +原形动词。 语法考点之二：情态动词 *情态动词: will（愿意）, shall（将）, must（必须）, can, may, would, should (应该), might, could, ought to, used to（过去常常）, need（需要）, dare（竟敢），have to（不得不） 考试中，情态动词部分重点测试以下内容： （1）情态动词+行为动词完成式（表示推测） （2）某些情态动词的特殊用法 考点1. 情态动词＋have＋过去分词结构表示推测 (1) must have done表示推测过去某事“一定”发生了。否定形式为：can’t / couldn’t have v-ed, 表示过去不可能发生某事。 (2) could have done表示推测过去某动作“很可能”发生了。 (3) may / might have done 表示推测过去某事“也许”发生了.
初中英语语法——If引导的条件状语从句(讲解及练习)
条件句从句主句 真实一般现在时一般将来时 情态动词+动原祈使句 非真实 一般过去时 be动词用（were） would/could+动原初中英语――条件状语从句（讲解&练习） Ⅰ条件状语从句的定义 Ⅱ条件状语从句的引导词 1.if引导的条件状语从句：表示在某种条件下某事很可能发生。 If we pay much attention to the earth, we'll have a better world. 如果我们多关爱地球，就会拥有一个更美好的世界 If it rains tomorrow, what shall we do? 如果明天下雨，我们怎么办？ 注意：if还可以引导虚拟条件句，表示不可实现的条件，从句中多用一般过去时或过去完成时。 What would happen if there were no water ? 如果没有水会怎样？ 2.unless引导的条件状语从句，unless的意思是如果不，除非。可与if...not互换。 You will fail in English unless you work hard. 你英语考试会不及格的，除非你更加努力。 3.as /so long as引导的条件状语从句：as /so long as意思是“只要” So long as you're happy,i will be happy. 只要你高兴，我就高兴。 Ⅲ条件状语从句的种类 Ⅳ条件状语从句的时态原则 用法例句 ①主句为一般将来时态，if从句用一般 现在时态（即主将从现）。We will stay at home if it rains tomorrow. 如果明天下雨，我将要呆在家。 ②主句中含有情态动词，if从句用一 般现在时态。If you finish your homework, you can go home now.如果你做完了作业，你现在可以回家了。 ③主句为祈使句，if从句用一般现在 时态。Don’t jump into the river if you feel very hot. 如果你感到很热，不要跳入河里。 ④主句为过去将来时，if从句用一般 过去时态（如果涉及到be动词， 一律都用were）。此时，表达的是和现实相反的推测，用虚拟语 气。If I were you, I wouldn’t do it like that.如果我是你，我就不会那么做的。 If you gave me some money, I would be very happy. 如果你给我一些钱，我就会很高兴的。 二、if 引导的条件状语从句 （1）“if 从句+祈使句”的句子。其实，if 作为一个连词，主句也可以是其他形式的句子。 例如：If you want to go, please let me know. (2)“祈使句 + and (or)+ 陈述句”
高中英语语法_状语从句练习30题及详解
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 of the heavy traffic，it was already time for lunch break she got to her office． A．since B．that C．when D．until* m 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 7. She had just finished her homework her mother asked her to practice playing the piano yesterday. A. when B. while C. after D. since 8. 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 9. You can’t borrow books from the s chool library ______ you get your student card. A. before B. if C. while D. as 10. All the dishes in this menu, otherwise stated, will serve two to three people. A. as B. if C. though D. unless of the financial crisis, days are gone _ _ local 5-star hotels charged 6,000 yuan for
初中英语语法状语从句大全
初中英语语法状语从句大全 1.时间状语从句 引导连词有when，while，till，not…until，since， after ,before ,as soon as The bus won’t start until everybody gets on. 公共汽车直到每人都上车为止，才开动。 When he knocked at the door I was cooking. 当他敲门时，我正在煮饭。 Last night before he came back home, his wife had already cooked dinner and waited for 2 hours. 昨天晚上在他回到家之前，他的妻子已经做好晚饭足足等了他两小时之久。 After I went to church, I went shopping. 2. 地点状语从句 地点状语从句通常由where, wherever 引导。 Where there is a will, there is a way. 哪里有志向，哪里就有出路。有志者事竟成。 Where there is a life, there is a hope. 哪里有生命，哪里就有希望。留得青山在，不怕没柴烧。 Wherever you go, whatever you do, I will be right here waiting for you. 不管你去哪里，不管你做什么，我都会在此守侯你。
3.原因状语从句 引导连词有because，as, since。 He didn′t see the film because he had seen it. 他没有看那部电影，因为他已经看过了。 They couldn’t get on the train，for it was too crowed. 比较：because, since, as和for 1) because语势，用来说明人所不知的原因，回答why提出的问题。当原因是显而易见的或已为人们所知，就用as或 since。 I didn't go, because I was afraid. Since /As the weather is so bad, we have to delay our journey. 2) 由because引导的从句如果放在句末，且前面有逗号，则能 够用for来代替。但如果不是说明直接原因，而是多种情况加以推断，就只能用for。 He is absent today, because / for he is ill. He must be ill, for he is absent today.
高中英语语法状语从句归纳总结
状语从句一． 二．分类：
adv.+that （如此……以致） so that （结果……） such+n.+that （如果……以致） that （所以，因此） 让步状语从句： though/although 不可同but 连用。 though/although （虽然） however （可是） even though/if （即使） no matter+what/which/where/who/when =whatever/whichever/wherever/whoever/whenever （不论什么/哪一个/哪里/谁/何时） 比较状语从句： as （正如） as…as （和……一样） not as/so … as （不如……） than （比……更） the+比较级…+the+比较级 （越……越……） 条件状语从句： if （假设） unless （如果不） so long as （只要） on condition that （如果） 方式状语从句： as （像……那样地） just as （正像） as if （好像） as though （好像） 三． 四． 各种状语从句的简化方法：
1． 2．以after和before引导的状语从句的主语若与主句主语一致时，从句等于after/before+doing sth. 作状语。 例：After she sang，she left the rich man's house．= After singing，she left the rich man's house．3． 4．以as soon as引导的状语从句的主语若与主句主语一致时，从句等于on+doing sth.,作状语，此时的动词为非延续性动词。 例：Mary began to operate on the wounded soldiers as soon as he arrived at the village． = Mary began to operate on the wounded soldiers on arriving at the village． 5． 6．时间状语从句和条件状语从句的主语和主句主语一致时，有时可简化为不定式作状语。 例：She stopped when she saw her husband．= She stopped to see her husband． If you want to understand the farmers，you must go to the countryside． = To understand the farmers，you must go to the countryside． 7． 8．结果状语从句和目的状语从句的主语与主句主语一致时，可以简化为不定式作状语；若两者主语不一致时，则应简化为不定式的复合结构作状语。 例：He was so tired that he couldn't go any further．= He was too tired to go any further． I came here so that I could ask some questions．= I came here(in order) to ask some questions．9． 10．以when，while引导的时间状语从句和以if引导的条件状语从句的主语若与主句主语一致时，从句等于when/while/if +doing sth.作状语，表示谓语动作发生在该状语动作的进行过程之中。例：When he turned on the radio，he found it broken．= When turning on the radio，he found it broken．While she was walking along the street，she was hit by a car．= While walking along the street，she was hit by a car． 11．原因状语从句的主语与主句主语一致时，可简化为分词短语作状语。 例：Since l didn't know Chinese，I tried to speak to her in English．= Not knowing Chinese，I tried to speak to her in English． 注意：形容词短语也可作表示原因的状语，来代替原因状语从句，放在句首、句末均可，但一般应加逗号。 例：As he was thirsty and eager to get a little rest，he went into the tea-house． = Thirsty and eager to get a little rest，he went into the tea-house． 12．在时间、原因、条件等状语从句中，若从句和主句主语不一致时，可简化为分词复合结构作状语。有时也可简化为“with/without名词或代词十分词(短语)”形式作状语。 例：When the film start appeared, the children got exited．= The film start appearing，the children got exited． If all the work is done, you can have a rest．= With all the work done，you can have a rest． Nothing can live if there is no air．= Nothing can live without air．
初中英语语法状语从句讲解专项练习及答案
初中英语语法状语从句讲解专项练习选择合适的连接词，完成下列句子。 spends a lot of money on books______he is not rich. fell into sleep ______she was listening to the music. David at school today ----No. He is at home ______he has a bad cold. , won't have supper ______my mother comes back. to him slowly ______he may understand you better. 6. ______ she doesn't come on Sunday, I'll go fishing by myself. is four years ______I had left that small village. 8. ______the air moves, it is called wind. will go to the park ______it doesn't rain tomorrow. boys did ______much work. are few new words in the passage ______we can't understand it. ? back ______you come from. reached the station ______the train had left. you have a swimming pool ----No, we don't. At least, not ______big ______yours. me your paper ______you have finished it. is raining hard, ______we have to stay at home. 17. ______you work harder, you'll never pass the final exam. after the children ______I am out. ' village is ______far away ______I can't get there on foot. is ______an interesting book ______I can't stop reading it. 能力提高练习 1 ( ) 1 The meeting didn't start___ everyone was there. A. because B. until C. why D. if ( ) 2 The boy ___ to bed ___ his mother came in. A. went not; until B. didn't go; after C. went; until D. didn't go; until ( ) 3 I won't believe you___ I have seen it with my own eyes. A. before B. until C. after D. when ( ) 4 He ___ home ___ she was satisfied ___ his answer yesterday. A. didn't go; until; with B. wasn't go; after; to C. doesn't go; before; with D. didn't go; until; to ( ) 5 He ___ back until the work ___ done. A. isn't; will be B. isn't; is C. won't be; will be D. won't be; is ( ) 6 They didn't start the work ___ their teacher came back. A. until B. while C. as soon as D. if 2 ( ) 1 Tom will call me as soon as he ___ Shanghai. A. arrives B. will reach C. arrives in D. get to ( ) 2 I'm sure he'll come to see me before he ___ Beijing. A. will leave B. is leaving C. leave D. leaves ( ) 3 I will tell him the news as soon as he___ back. A. come B. comes C. will come D. came 3 ( ) 1 Tom has got a watch. He ___ it for two years. It _______ by his father. A. has bought; was bought B. has got; is bought , C. was bought; has bought . D. has had; was bought "' ( ) 2 When he got to the station, the train ___. A. left B. had left C. leaves D. has left
初中英语语法状语从句专练及答案
初中英语语法状语从句专练及答案 1 ( ) 1 The meeting didn't start___ everyone was there. A. because B. until C. why D. if ( ) 2 The boy ___ to bed ___ his mother came in. A. went not; until B. didn't go; after C. went; until D. didn't go; until ( ) 3 I won't believe you___ I have seen it with my own eyes. A. before B. until C. after D. when ( ) 4 He ___ home ___ she was satisfied ___ his answer yesterday. A. didn't go; until; with B. wasn't go; after; to C. doesn't go; before; with D. didn't go; until; to ( ) 5 He ___ back until the work ___ done. A. isn't; will be B. isn't; is C. won't be; will be D. won't be; is ( ) 6 They didn't start the work ___ their teacher came back. A. until B. while C. as soon as D. if 2 ( ) 1 Tom will call me as soon as he ___ Shanghai. A. arrives B. will reach C. arrives in D. get to ( ) 2 I'm sure he'll come to see me before he ___ Beijing. A. will leave B. is leaving C. leave D. leaves ( ) 3 I will tell him the news as soon as he___ back. A. come B. comes C. will come D. came 3 ( ) 1 Tom has got a watch. He ___ it for two years. It _______ by his father. A. has bought; was bought B. has got; is bought , C. was bought; has bought . D. has had; was bought "' ( ) 2 When he got to the station, the train ___. A. left B. had left C. leaves D. has left ( ) 3 The boy told his father what he ___ in the street. A. saw B. have seen C. had seen D. see ( ) 4 We ___ TV when the telephone ____. A. watched; was ringing B. were watching; rang C. watch; rings D. are watching; rang ( ) 5 By the end of last term, I___ ten books. A. had finished reading B. have finish reading
(完整)初中英语语法状语从句讲解及练习附答案
初中英语语法专题讲座——状语从句 状语从句在复合句中作状语，修饰动词、形容词或副词等。状语从句可以表示时间、条件、原因、地点、目的、结果、让步、方式、比较等意义。 知识梳理：提纲挈领，抓住重点和难点！ 各类状语从句连接词（短语）一览表： 时间 when, while, as, as soon as, since, until, after, before，as long as（长达……之久） 条件 If, unless,as/so long as(只要) 原因 As, because, since，as/so long as(既然,因为) 地点 Where 目的 So that(为了), in order that 结果 So that（方便）, so…that,such…that 让步 though, although, even if, however 方式 As 比较than, (not)as…as, 时间状语从句： Whenever he comes, he brings a friend. 他每次来都带个朋友。 They all continued their regard for me as long as they lived. 他们毕生都在关心着我. 条件状语从句： As long as I am alive, I will go on studying. 只要我活着，我就要学习。 原因状语从句： Since we live near the sea, we enjoy nice weather.由于我们住在海边，能享受到好的天气。 地点状语从句： Put it where we can all see it.把它放在我们都能看到的位置。 目的状语从句： Finish this so that you can start another.把这个做完，（为了）你可以开始另一个。 结果状语从句： He was so angry that he couldn't say a word. 他气得说不出话了。 让步状语从句： Though he is in poor health, he works hard.虽然他身体不好，但是他工作很努力。
专四常考10道语法题
1. My uncle is quite worn out from years of hard work. He is no longer the man ___ he was fifteen years ago. (2011/51) A. Which B. whom C. who D. that 解析：本题考察定语从句的用法。关系代词在定语从句中做表语时，无论指认还是指物，都只能用that，不用which，且that也可以省略。故选D。再如： China is not the country (that) it was. 中国不是从前的那个国家。 Mary is no longer the girl (that) she used to be. 玛丽不是过去的那个女孩了。 2. It is not so much the language ___ the cultural background that makes the book difficult to understand. (2011/57) A. as B. nor C. but D. like 解析：本题答案是A。本题考察短语not so much A as B，它的意思是“与其说是A，倒不如说是B”，例如： He is not so much a writer as a reporter. 他与其说是个作家、不如说是个记者。 The boy is not so much slow as careless in learning． 与其说那男孩学东西迟钝，倒不如说他学习粗心。 The oceans do not so much divide the world as unite it. 与其说海洋分开了世界，不如说海洋把世界联系在一起。
英语语法之时间状语从句
时间状语从句常由以下连接词引导：when（当……时），as（一边……一边；当…时），while（在……期间），after（在……之后），before（在……之前），as soon as（一……就），since（自从），till(until)（直到……，直到……才），whenever（任何时候），the moment（一……就），no sooner than（一……就），hardly…when… （一……就）等。由以上连接词（或词组）连接的主从复合句中，主句和从句的动作，有的是同时发生，有的是先后发生。因此，要特别注意根据连接词所代表的时间不同，主句和从句的谓语要使用相应的时态。这是掌握时间状语从句的关键。 1. when 和whenever 引导的从句：从句的动作和主句的动作可以同时发生，也可以先于主句的动作发生。例如： When we reached home, it was already dark. 我们到家的时候天已经黑了。 When my cousin came yesterday, I was playing volleyball. 昨天我表哥来时，我正在打排球。 When it rains, I go to school by bus.下雨的时候，我坐车去学校。 I shall tell her the good news when she comes. 她来时，我将告诉她这个好消息。（主从句都表示将来发生的动作，但要注意从句中要用一般现在时，表示将来。） Come to see us whenever you can.你什么时候有空，就过来看看我们。 2. while 和as 引导的从句：while表示“当…过程中”，强调某一段时间主句和从句的动作在同时发生。as表示“当…时”或 “一边…一边”，主句和从句的动作同时发生。例如： Work while you work; play while you play. 该工作的时候就工作，该玩的时候就玩。 While he is reading, he always makes notes. 他经常一面看书，一面做笔记。 She sings as she goes along.她边走边唱。 You will grow wiser as you grow older. 随着年龄的增长，你会更加聪明起来。 3. before 和after 引导的从句：前者一般表示主句的动作发生在从句动作之前。后者表示主句的动作发生在从句动作之后。 例如： I didn’t know any English before I came here. 我来这儿之前，一点英语都不懂。 I had written my report before my mother came back.
初中英语语法状语从句-精华版
状语从句 状语从句用来修饰主句中的动词，副词和形容词的从句叫状语从句。根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句，原因状语从句，结果状语从句，比较状语从句，目的状语从句，让步状语从句。 1. 时间状语从句 (1)时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。例如： When while as 的区别It was raining hard（rain hard 下大雨）when got to school yesterday. While he was doing his homework, the telephone rang. As he walked along（沿着走）the lake, he sang happily. He had learned a little Chinese before he came to China. After he finished middle school, he went to work in a factory. (2)在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。例如： I’ll ring you up as soon as I get to New York. I will tell him everything when he comes back. He won’t believe it until he sees it with his own eyes. (3)在带有till或until引导的时间状语从句的主从复合句里 如果主句用肯定式，其含义是“一直到……时”，谓语动词只能用延续性动词。 如果主句用否定式，其含义是“直到……才……”, “在……以前不……”, 谓语动词可用瞬间动词。 例如： The young man read till the light went out（熄灭）. Let’s wait until the rain stops. We won’t start until Bob comes. Don’t get off（从下来）until the bus stops. 【。固定组合里from morning till night，till/until是不能替换的，】 2. 条件状语从句 (1)条件状语从句通常由if, unless引导。例如： What shall we do if it snows tomorrow? Don’t leave the building unless I tell you to. (2)在条件状语从句里，谓语动词通常用现在时态表示将来的动作或状态。例如： I’ll help you with your English if am free tomorrow. He won’t be late unless he is ill. (3)“祈使句+ and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。例如： Hurry up, or you’ll be late. =If you don’t hurry up, you’ll be late. Study hard and you will pass the exam. =If you study hard, you will pass the exam. 3. 原因状语从句 (1)原因状语从句通常由because, since, as引导。例如： He didn’t come to school because he was ill. As it is raining, we shall not （不得；不应该）go the zoo. Since you can’t answer the question, I’ll ask someone else.
2004-2013-英语专四语法-从句
三类从句 名词性从句： Nominative/noun clauses 1. 主语从句subject clause 除基础知识外，另外要掌握的： a. 识别it作形式主语，主语从句后置 It is a privilege that you have invited me to the party. b. whether, if引导主语从句的区别 c. whatever, whoever, whenever , wherever引导主语从句时，不可以用
no matter what/who/when/where替换。在引导让步状语从句时，可互换。 2. 宾语从句object clause a. 识别it作形式宾语, 宾语从句后置I consider it an honor that you have invited me to your wedding. b. whether, if引导的宾语从句可互换(没有和or not连用时)，但介词后的宾语从句只能用whether, 不能用if. It is a question of whether we should compromise our integrity. c. 不可省略连词that的5种情况可浏览一下，有个印象：两个以上宾语从句，有插入语，直宾, that从句后置，
宾语从句是复合句，且复合句中从句位于主句之前。 3. 表语从句predicative clause a. 位于系动词之后； b. 可用whether, as if, as though引导。It looks as if it is going to rain. c. 当主句的主语是reason时，引导词用that, 不能用because. The reason why they were upset was that they lost the game. 4. 同位语从句appositive clause; 1. 通常在抽象名词之后，连词that 通常不可省略；if不能引导同位语从句；
英语语法大全之方式状语从句
英语语法大全之方式状语从句 方式状语从句通常由as, (just) as…so…, as if, as though引导。 1）as, (just) as…so…引导的方式状语从句通常位于主句后，但在(just) as…so…结构中位于句首，这时as从句带有比喻的含义，意思是"正如…"，"就像"，多用于正式文体，例如：Always do to the others as you would be done by. 你希望人家怎样待你，你就要怎样待人。 As water is to fish, so air is to man. 我们离不开空气，犹如鱼儿离不开水。 Just as we sweep our rooms, so we should sweep backward ideas from our minds. 正如打扫房屋一样，我们也要扫除我们头脑中落后的东西。 2）as if, as though 两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有时也用陈述语气，表示所说情况是事实或实现的可能性较大。汉译常作"仿佛……似的"，"好像……似的"，例如： They completely ignore these facts as if (as though) they never existed. 他们完全忽略了这些事实，就仿佛它不存在似的。（与事实相反，谓语用虚拟语气。） He looks as if (as though) he had been hit by lighting. 他那样子就像被雷击了似的。（与事实相反，谓语用虚拟语气。） It looks as if the weather may pick up very soon. 看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。） 说明：as if / as though也可以引导一个分词短语、不定式短语或无动词短语，例如： He stared at me as if seeing me for first time. 他目不转睛地看着我，就像第一次看见我似的。 He cleared his throat as if to say something. 他清了清嗓子，像要说什么似的。 The waves dashed on the rocks as if in anger. 波涛冲击着岩石，好像很愤怒。 https://www.360docs.net/doc/bf8855094.html, 北京微课创景教育科技有限公司- 1 -
高考英语语法状语从句习题及讲解
高考英语语法状语从句习题及讲解 1. 状语从句的类型 1〕时间状语从句：常见引导词有： when：表示主句和从句的动作同时或先后发生，强调点，表“就在那时；突然”. while：常表示延续性动词或状态；while也可表示对比的转折. as soon as：表示从句的动作一发生，主句的动作马上就发生. hardly / scarcely … when；no sooner … than：表示“还没来得及……就；刚……就”. directly, immediately, instantly：副词当连词用，表示“一……就”. the moment, the minute, the second：充当连词，等于when / as soon as. each time, every time, next time, by the time等：也可以引导时间状语从句. since：引导的时间状语从句，主句常用现在完成时，从句常用一般过去时.常用句型：It is + 段时间+ since从句，“自从……有多长时间了”. until：常与not连用，表示“直到……才……”；Not until置于句首时，主句要部分倒装；在It is / was…that / who…强调结构中，须连在一起. 2〕让步状语从句：常见引导词有：although, though, even if, even though, as等. 3〕原因状语从句：常见引导词有： because：常用于回答why, 语气最强；强调原因，常与just, only等起强调作用的副词连用；可引导表语从句. for：是个并列连词，一般不放在句首，常表示一种推测或解释，或用作附加说明，语气弱. as, since：常译为“既然、由于”，表示十分明显的原因，语气较弱. now that：表示“既然”的意思. 4〕地点状语从句：常见引导词有：where, wherever等. 5〕目的状语从句：常见引导词有：that, so that, in order that等.目的状语从句的谓语动词常与情态动词连用，否则可能是结果状语从句.不可 置于句首.目的状语从句还可以用动词不定式来替换. 6〕结果状语从句：常见引导词有：that, so that, so … that, such … that …等. 7〕方式状语从句：由as, as if〔though〕等引导.