before这个词.doc

before这个词 “before”过关练习及答案1. (2005山东)It was some time _ we realized thetruth.A.when B.until C.since D.before2. (2006福建)-How long do you think it will be_ china sends a manned spaceship to themoon？-Perhaps two or threeyears. A.when B.until C.that D.before3. Why didnt you tell me him about the meeting?He rushed out of the room _ I could say a word.A. before B. until C. when D. after4. He made a mistake, but then he corrected the situation _ it got worse. A. until B. when C. before D. as5. Several weeks had gone by _ I realized the painting was missing.A. before B. since C. when D. after6. The American Civil War lasted four years _ the North won in the end. A. after B. when C. before D. then 7.How long do you think it will be _ China sends a manned spaceship to the moon? Perhaps two or three years.A. before B. that C. when D. until8. It was some time _ we realizes the truth. A. since B. when C. before D. then 9. 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; know10. Scientists say it may be five or six years _ it is possible to test this medicine on human patients. A. since B. when C. before D. then11. It was evening _ we reached the little town of Winchester.A. before B. when C. since D. then12. Time passed quickly and three weeks went by _ we knew it.A. since B. after C. then D. before13. We had to sell vegetables at a low price _ they rotted away.A. when B. before C. then D. since 14. He made a mistake, but then he corrected the situation _ it got worse. （03北京） A. until B. when C. before D. as1- 5 DDACA 610 CACCC 1114 ADBCBefore典型例题解析：1. Someone called me up in the middle of the night, but they hung up I could answer the phone（NMET 2000） Aas Bsince Cuntil Dbefore 分析：as表示时间时，强调主从句动作的连续性；since表示时间时，常用句型“主语have done sthsince主语did宾语”；until表示连续性的含义，若终止性动词同until搭配时，一定要用否定式；before在此表示“还没有（来得及）就”。所以答案为D。 2. Why didnt you tell him about the meeting？ (2006年四川) He rushed out of the room I could say a word. A. before B. until C. when D. after解析： 答案为A。题中before意为“不等就”、“尚未就”、“还没来得及就”，它表示从句的动作尚未来得及发生，主句的动作已发生或完成。全句句意为：“我还没来得及说一句话，他就冲出了房间”。3. They sailed along the Pacific Ocean for two weeks they arrived home. A. since B. when C. before D. after解析： 此题正确答案为C。全句句意为：“他们在太平洋航行了两个星期才回到家。”强调从句动作比主句动作发生晚。4. Its cloudy. Take an umbrella you regret it. A. but B. and C. after D. before解析： and及but表示并列关系，不合语境；after意为“在之后”，不合常识，应是在下雨前带伞；before在此处意为“以免你后悔”。before作此意义的用法的例子不少。5. Several weeks had gone by I realized the painting was missing. (2004全国) A. as B. before C. since D. when 解析： 此题最易错选C或D项，而正确答案为B。用since则时间延续到了现在，在时间上与had gone矛盾；用when则无法强调时间流逝的不知不觉性。又如：Time passed quickly and three months went by before I knew it. 时间飞快地流逝，不知不觉3个月过去了。6. It wont be long you regret what you have done. A. after B. before C. since D. until 解析： It was / will be 时间 before . 表示“过了多久才(强调时间的长)”，在否定句中则表示“没过多久就(强调时间的短)”。 It will be two years before we meet again.我们要过两年才能见面。7. The American Civil War lasted four years _ the North won in the end.(2005广东) A. after B. before C. when D. then 解析：答案为B。本题考查连词before表示“在之后才”之的用法，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。8. It was evening_ we reached the little town of Winchester. （2004天津）A. that B. until C. since D. before 解析：答案为D。本题考查连词before表示“在之前就”的用法。句意是“我们到达小镇Winchester之前就已经是傍晚时分了”。9. He made a mistake, but then he corrected the situation _ it got worse.（2003北京）A. until B. when C. before D. as解析：答案为C。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。10. The field research will take Joan and Paul about five months; it will be a long time _ we meet them again.（2007安徽卷） A. after B. before C. since D. when11. How long do you think it will be _China sends a manned spaceship to the moon?解析：答案为BD。两个题before 用于肯定的“It + will be + 时间段 + before.”句型中，表示“要过多久才”。12. It _ long before we _ the result of the experiment.( 上海春招2002)A. will not be.will know B. is.will know C. will not be.know D. is.know解析：答案为C。before在本题中用于否定句,意为“过不了多久就会”,再由状语从句要用一般现在时代替一般将来时的用法可知C项为正确答案,句意是:要不了多久我们就会知道试验的结果了。13. Scientists say it may be five or six years_ it is possible to test this medicine on human patients. （2004福建） A. since B. after C. before D. when解析：答案为C。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”。（2006福建卷） Perhaps two or three years. A. when B. until C. that D. before4. “（宁可而）不愿” ，与其，毋宁.”常与will 或would 连用。比优先”(用于表优先顺序) 。如：Id give up the plan before I turn to him for help. 宁可放弃计划也不向他求助。 Id die before I apologize to them! 我宁死也不愿向他们道歉！True men choose death before dishonor. 大丈夫宁可杀不可辱。 We will die before we give in. 我们宁死不屈。They would fight to death they surrendered(投降) A. before B. after C. since D. because解析： 答案为A。before引导的从句在与will, would连用时，有“宁愿也不”的含义。before即使是作介词用也有此意义。5. 表示“以免;否则；不然” 如：Wed better finish the work in time before the boss scolds us. 我们最好按时完成工作，免得挨老板骂。 Put that away before it gets broken. 把它收好，以免砸了。 Do it before you forget. 尽早动手，不然忘了。 Go before I call the police. 走吧，否则我叫警察了。I had better go now before it is too late. 我最好现在就走，免得太迟。Pigs will fly before hell be a scientist. 如他当科学家，猪都会飞了。 Get out before I call the police. 滚开,否则我叫警察。6有些句子中的before可译成“趁（着）”。 如：I must write it down before I forget it趁还没忘记，得把它写下来。 They are thinking of buying the house before the prices go up. 他们正在考虑趁房价未涨时把房子买下来。 7. “It + be + 一段时间 + before从句”中的主句和从句的时态, 一般有两种情况：a. 如果主句用一般将来时，则从句用一般现在时，主句是肯定句，意为“多长时间以后某事即将发生”；主句是否定句 “it will be(not )+时间段+ before.”翻译成“用不了多久就”。 如：It may be many years before we meet again. 大概要过许多年才能再见. It will be a long time before we finish this dictionary. 我们需要很长的时间才能把这部词典编译完. It wont be long before wemeetagain.用不了多久我们就会再见面的。 b. 如主句用过去时，从句也用过去时，意为“多长时间以后某事才发生”。 “it was +时间段+ before ” 肯定句表示 “过了多久才”如：It was three days before he came back.It was some time before I realized the truth.过很长一段时间我才了解到真相。After that it still took seven years before theygotmarried.又过了七年才结婚。用于否定句型 “ it was not long +时间段+ before ” 意为“不久就.”如：It wasnt long before he married again. 不久他就又结婚了。We didnt wait long before he came back. 我没等多久他就回来了。It was not long before the Swiss rose up and drove the Austrian soliders out of their country不久，瑞士人就举行起义，把奥地利人赶出了他们的家园。 注意：当主句的谓语动词为延续性动词时，before与until有时可以互换。It was an hour before/until the police arrived. 8. “不要”、“别” ; 主句含有hardly，scarcely等半否定副词时可以译为“刚就”这时候主句应用过去完成时态，从句用过去时，还可以用when替代before。如：Catch him before he escapes. 抓住他，别让他跑了。Take this computer before you change your mind. 买了这台电脑，不要三心二意。如：We had scarcely reached the school before/when thebellrang.我们刚到学校铃声就响了。 I had hardly sat down before the telephone rang.Hardly had I sat down before the telephone rang. 我刚一坐下电话就响了。“before”的用法种种before在英语中是一个比较常用的虚词，它既可作介词、副词，也可作从属连词用。在近几年的高考试题中常常出现考查其从属连词用法的题目。作为连词，引导时间状语从句，它的用法灵活、译法多变，是高考的一个重要考点。下面我们就对其作介词、连词时的用法加以总结，希望对同学们有帮助。一、介词1. 指时间上早于，在之前如：She has lived here since beforethewar. 她从战前就一直在这儿住。2. 指位置在前面如：We knelt down beforeGrandmasgrave.在奶奶的墓前跪下。3. 指顺序或排列在之前如：Your name comes before mineon thelist.名单上你名字在我之前。4. 在某人面前如：She said it beforethewitness.他是当着证人的面说的。二、副词 “以前、过去、已经”如：You should have told me so before. 你早就应该告诉我。 I have seen that film before. 我以前看过那部电影。三、连词1（指时间）在.以前，这时主句中的动作发生在前，before从句的动作发生在后。 如：Before I go to the cinema, I must finish my homework我必须在去看电影以前做完作业。 Turn the light off before you sleep. (睡前先把灯熄掉。) Think before you speak. (说话之前，应先想清楚。) Lily had written some letters before she went out shopping. They arrived before we expected. 我们没有想到他们来得那么早。I must finish my work before I go home. 我必须把工作做完才回家。 2 表示“（后）才”，此时before从句强调从句动作发生得晚或慢（主句动作延续时间较长）。 如：I thought carefully about it before I made a decision. 我经过再三考虑才决定。 It may be many years