1、语法专题八状语从句,状语从句在句中作状语，修饰主句中的动词、形容词或副词等。状语从句放在主句之前时，常用逗号分开；放在主句之后时，一般不用逗号。状语从句按其意义和作用可分为时间、条件、原因、让步、目的、结果、方式、比较、地点等9种。,1时间状语从句(1)时间状语从句常用的连词有when, as, while, before, after, since, till(until), as soon as, hardly.when., no sooner.than, the moment等。(2)时间状语从句一般不用将来时，因此，主句若为将来时，时间状语从句要用一般现在时。(3)连词when, wh
2、ile, as都表示“当的时候”，但是when引导的从句的动作和主句的动作可以同时发生，也可以先后发生；用as, while时则强调主句和从句的动作同时发生。,(4)till(until)表示“一直到”时，主句和从句都用肯定式；表示“直到才”时，主句用否定式，从句用肯定式。(5)as soon as和the moment引导的从句表示“一就”；用no sooner.than和hardly.when引导的从句表示“一就”。主句中的动词一般用过去完成时，从句用过去时；而且主句一般倒装，把助动词had提到前面。,2原因状语从句原因状语从句常用because, since和as引导。3地点状语从句地点
3、状语从句常用where, wherever等连词引导，注意不要和where引导的定语从句相混淆。4条件状语从句条件状语从句用if, unless(if.not), as(so) long as(只要)等词引导，如果主句是将来时，条件状语从句用一般现在时表示。如：As_long_as I live, I shall work hard.,5让步状语从句让步状语从句由although(though), as, even if, however, whatever, no matter who(how.)等词引导。如：Clever as he is, he doesnt study well.注意：
4、由as引导的让步状语从句，须将作表语的形容词或名词(名词前不用冠词)放在句首。6结果状语从句结果状语从句一般由so, so that, so.that, such.that引导，放在主句之后。,7目的状语从句目的状语从句常由so.that, so that, in order that等引导，放在主句之后。8方式状语从句方式状语从句放在主句之后，用as, just as, as if, as though等引导。as if和as though引导的从句一般用虚拟语气。但如果从句中所陈述的情况很可能实现，也可用陈述语气。,9比较状语从句比较状语从句常由as.as, than, not so.as
5、., the more.the more.等词引导。比较从句部分常是省略句。如：I know you better than he does.,1.(2009重庆)Peter was so excited _ he received an invitation from his friend to visit Chongqing.A. where B. thatC. why D. when2(2009四川)Owen wouldnt eat anything _ he cooked it himself.A. until B. sinceC. unless D. while,3(2009浙江)T
6、he medicine works more effectively _ you drink some hot water after taking it.A. as B. untilC. although D. if4(2009江苏)_ unemployment and crime are high, it can be assumed that the latter is due to the former.A. Before B. WhereC. Unless D. Until,5(2009天津)I travel to the Binhai New Area by light railw
7、ay every day, _ do many businessmen who live in downtown Tianjin.A. as B. whichC. when D. though6(2009山东)The little girl who got lost decided to remain _ she was and wait for her mother.A. where B. whatC. how D. who,7(2009成都毕业班诊断)It matters little who does it _ it is done, for you see, we are short
8、of hands now.A. as long as B. as far asC. as early as D. as soon as8(2009皖南八校联考)Did you tell him that weve put off the meeting?No. He rushed out _ I could say anything.A. in case B. afterC. before D. unless,9(2009南京调研)We need to think outside of box _ we are to come up with something really new.A. s
9、o that B. as long asC. once D. if10(2009南通调研)Was it there _ you were away to answer the phone?There is no doubt about it.A. that B. whichC. while D. where,11(2009宁波教学检测)Most birds find it safe to sleep in the trees, so _ they have eggs or young chicks, they dont use a nest.A. why B. howC. where D. u
10、nless12(2009宁波教学检测)I wont give you such help _ you tell me the truth. Its beyond my ability.A. when B. sinceC. if D. even if,13(2009福建毕业班质检)In hot weather, an old tyre can break again easily _ its mended.A. when B. whereC. which D. that14(2009杭州教学检测)Ill never forget such an attractive city _ I spent
11、 many happy hours there with my classmates last summer holidays.A. that B. whereC. in which D. because,15(2009杭州教学检测)I could never watch any movie more than once, _ good it is.A. whatever B. howeverC. whenever D. whichever16(2009合肥教学检测)Several years had passed _ I finally realized the true value of
12、friendship.A. when B. thatC. before D. until,17(2009石家庄毕业班教学检测)We must think twice _ we make the final decision.A. when B. whileC. until D. before18(2009龙岩毕业班质检)Janet spent money _ there were no tomorrow.A. even though B. thoughC. as though D. if only,19(2009龙岩毕业班质检)My mother likes everything in ord
13、er, and she always reminds us to put things back _ we get them from.A. so that B. in whichC. once D. where20(2009江南十校测试)How do you think I should receive the visitor?_ you feel about him, try to be polite.A. No matter B. HowC. Whatever D. However,21(2009苏锡常镇四市教学调查)_ the quality of schooling is high,
14、 parents are eager not only to send their children to school, but also to _ them there.A. Where; keep B. Where; leaveC. When; keep D. When; leave22(2009潍坊教学检测)Many adults agree that teenagers shouldnt live alone _ they have their parents permission.A. if B. unlessC. in case D. now that,23(2009湖南十校联考
15、)They kept trying _ they must have known it was hopeless.A. if B. becauseC. when D. where24(2009西安八校联考)When solving the problem a second time, youd better be more careful _ you made a mistake.A. in case B. whereC. in which D. that,25(2009南京一模)Do you think we will finish the project in time?Yes, _ th
16、e truck doesnt break down.A. even if B. unlessC. until D. so long as26(2009潍坊教学检测)How long do you think it will be _the USA recovers from the losses of the financial crisis?Perhaps four or five years.A. when B. sinceC. that D. before,27(2009西安八校联考)_ we gave him something to eat, he would save it up
17、for his little sister.A. Whatever B. HoweverC. Whichever D. Whenever28(2009龙岩毕业班质检)It was at five in the afternoon, _ I was about to get home, _ a strange sound caught my attention.A. when; that B. that; whenC. before; and D. since; that,29(2009合肥教学检测)_ you never plan to visit the polar bears in the
18、 North Pole or the penguins in the South Pole, now it is the proper time to start thinking about that.A. Until B. UnlessC. As long as D. Even if30(2010江苏盐城测试)At present, adjusting our economy policy is necessary _ it will help us to strengthen our competitive ability.A. in that B. howeverC. therefor
19、e D. so,31(2009南通联考)I was so familiar with him that I recognized his voice _ I picked up the phone.A. while B. afterC. in case D. the minute32(2009湖北八校)Tom woke from a terrible dream _ in another world, one that was real.A. just to find himB. just to find himselfC. only to find himD. only to find hi
20、mself,33(2009西城抽样)The two collectors have determined to buy the precious Egyptian vase, _.A. however much it costsB. no matter how it costsC. however much does it costD. no matter how much does it cost34(2009海淀期末)A rainforest is usually found _ heavy rainfall is frequent.A. there B. whichC. because
21、D. where,35(2009常州一中期末)I was scared and feeling pretty anxious, _ in a new country.A. for the first time I wasB. this being my first timeC. being my first timeD. I was the first time36(2009湖南部分重点中学联考)If you want to do the experiment again, youd better be more careful _ you made a mistake.A. when B.
22、whyC. where D. that,37(2009安徽江南十校)The influence of automobile extends throughout the economy _ the car is so important to American people.A. then B. asC. so D. which38(2009安徽江南十校)I have heard these sons and daughters say they never fully appreciated their mothers _ it was too late to tell them.A. as
23、 B. thatC. until D. when,39(2009江西一联)If you want to do the job once more, youd better be more careful _ you make mistakes.A. where B. in caseC. so that D. when40(2009江西一联)How can they learn so much _ they spend such a lot of time hanging about?A. although B. whenC. before D. until,答案1D。考查状语从句。when引导
24、时间状语从句，表示“当时候”。句意：当彼得收到朋友参观重庆的邀请时，他很激动。其他选项不合题意。2C。考查状语从句。unless“除非，如果不”，引导条件状语从句。句意：欧文不愿吃任何食物，除非是自己烧的。3D。考查连词和状语从句。句意：如果吃药后再喝点热水，药的效果会更好。if表示“如果”符合语意，在句中引导条件状语从句。,4B。考查状语从句。Where引导地点状语从句。句意：凡是失业率与犯罪率高的地方，犯罪都是由失业引起的。5A。考查状语从句。从语境看，这里用as引导方式状语从句，表示“正如，就像”，从句的主语较长，为了保持句子结构的平衡而使用了倒装句，正常的语序是：as many bus
25、inessmen.do。6A。考查状语从句。句意：这个迷路的小女孩决定待在原地等她妈妈。故应选择where来引导地点状语从句，答案为A。,7A。从for后的原因状语从句可知，我们缺少人手，所以主句所说的是“只要做完就可以，是谁做的并不重要”，故A项正确。8C。句意：我还没来得及说什么，他就冲出去了。9D。if在本题中引导条件句。think outside of box表示“跳出惯性思维来思考问题”。come up with“想出主意、办法或某个问题的解决方案”。句意：如果我们要想出真正新的东西就要跳出惯性思维去思考。,10C。考查时间状语从句。while引导时间状语从句，表示“在时候/期间”。
26、前句句意：当你走去接电话时，它在那儿吗？11D。考查状语从句。根据句意，在第二个分句中有一个由unless引导的条件状语从句。12D。考查状语从句。根据后句“Its beyond my ability.”，可知此处应用even if引导让步状语从句。13B。where在句中引导地点状语从句。句意：天热时，旧轮胎容易在修补的地方破。14D。由句意可知，这里是原因状语从句。,15B。句意：无论是多好的电影我都不看第二遍。however good it isno matter how good it is。16C。考查状语从句的引导词。before引导时间状语从句，意思是“才”。17D。考查状语从句
27、。before引导状语从句时，意为“在之前”。Think twice before you do it.行动前要三思。18C。考查状语从句的引导词。句意：Janet(疯狂地)花钱，就好像以后再也没有机会花钱一样。根据从句中的谓语动词were可判断此处用的是虚拟语气，又依据语境知此处应选as though。,19D。考查状语从句。where we get them from是地点状语从句。20D。句意：“你觉得我该如何招待来访者？”“不管你对他感觉怎么样，要尽量礼貌。”这里however引导让步状语从句，相当于no matter how，所以选D。21A。句意：教学质量高的地方，父母不但迫切地送
28、孩子去，而且还让他们待在那里。因些选择where引导状语从句，keep them there表示“让他们待在那里”；而leave them there则有“把他们放在那里，不管他们，听之任之”之意，与题意不符。,22B。句意：许多大人一致认为除非有父母的允许，否则青少年不允许单独居住。unless“除非”；in case“万一”；now that“既然，由于”。23C。考查状语从句的连接词。根据语境“即使他们知道没有希望，他们也在不断尝试”可知答案为C。when在此表“即使”。24B。考查状语从句。句意：当你第二次解决这个问题的时候，你要在犯过错的地方更加小心。where引导一个地点状语从句。
29、,25D。考查状语从句。句意：只要卡车不出毛病，我们就能及时完成任务。so long as“只要”，引导条件状语从句。26D。考查状语从句。问句句意：你认为要过多久美国才能从金融危机(带来)的损失中恢复过来？“It will be时间段before.”表示“过多久才”。27D。考查状语从句。whenever表示“无论何时”，在这里引导让步状语从句。,28A。考查强调句和状语从句。从语境看，第一空用when引导时间状语从句“就在我准备回家时”；第二空应填强调结构中的that。29D。句意：即使你从来没有计划到北极去看北极熊或到南极去看企鹅，现在也该考虑一下了。even if“即使”，符合语境。3
30、0A。考查习惯用法。句意：目前，调整我们的经济政策是必要的，因为这将有助于增强我们的竞争力。in that“既然，因为”，相当于because，引导原因状语从句。,31D。考查主从复合句中从句的引导词。选项中while引导时间状语从句，意思是“当的时候”；after引导时间状语从句，是“在以后”之意；in case“万一，以免”，引导条件状语从句；the minute“一就”，等于as soon as，引导时间状语从句。题干意思是“我非常熟悉他，以至于我一拿起电话就辨认出是他的声音”。32D。考查状语。only to.引导结果状语，表示出乎意料。本句意为“汤姆从噩梦中醒来，却发现自己在另一个世
31、界，一个真实的世界里”。,33A。考查让步状语从句的用法。however muchno matter how much，表示“无论花多少钱”，且however much后应使用陈述语序，所以A项正确。34D。考查主从复合句。此处是地点状语从句，应用where引导。35B。独立主格结构作状语。36C。考查状语从句的用法。句意为“如果你想要再次做这个实验的话，在你出过错的地方，你要加倍小心”。根据句意，本题正确答案为C。,37B。考查状语从句。前后句之间构成因果关系，故用as，表示“因为”。38C。考查状语从句。根据句意，应用连词until。39B。考查状语从句。in case引导目的状语从句，意思是“以免，唯恐”，符合上下文的意思。若选where，后面状语从句的谓语动词应该改为made。40B。考查状语从句。结合上下文的意思，表示时间只能用连接副词when，引导一个时间状语从句。,
