Before用法小結(jié)與考點解讀

1、Before用法小結(jié)與考點解讀Before用作連詞時，意思是“在之前”。其實，它引導(dǎo)狀語從何時，在不同的句式中以及漢英表達習(xí)慣的不同，before含有不同的含義和用法。從歷年的高考試題可以看出,before是高考考查的熱點詞匯之一。為了幫助大家掌握，現(xiàn)就對它的用法歸納如下：一、表示“在之后才”。副詞 才”在漢語中強調(diào)某事發(fā)生得晚或慢。如果在含有before從旬的復(fù)合句中，強調(diào)從何動作發(fā)生得晚或慢時，就可以應(yīng)用 這種譯法。The American Civil War lasted four years the North won in the end.（2005廣東）A. afterB. bef

2、oreC. when D. then解析：答案為Bo本題考查連詞before表示“在之后才”之的用法，根據(jù)本句含義“美國南北戰(zhàn)爭持續(xù)了四年，北方才最終取得勝利”，可知本題應(yīng)選 B。二、表示”還沒來得及就”。目的在于強調(diào)從何動作發(fā)生之前，主句動作已發(fā)生。 Why didn't you tell him about the meeting? （2006四川卷） He rushed out of the room I could say a word.A. beforeB. untilC. whenD. after解析：答案為Ao本題考查連詞before表示”還沒來得及就” 的用法。句意是“

3、我還沒來得及說一句話，他就沖出了房間”。三、表示“在之前就 o這時主句與before從句中的兩個動作按時間先后依次發(fā)生。It was evening we reached the little town of Winchester. （ 2004天津）A. thatB. untilC. sinceD. before解析：答案為Do本題考查連詞before表示“在之前就”的用法。句意是“我們到達小鎮(zhèn) Winchester之前就已經(jīng)是傍晚時分了”。四、表示“趁”，"等到”，或"沒等就”等。He made a mistake, but then he corrected the

4、situation it got worse（. 2003北京）A. until B. when C. beforeD. as解析：答案為Co由made a mistake和轉(zhuǎn)折詞but可知本題句意是“他出了差錯 , 但沒等其進一步惡化，他就調(diào)整了局勢”。故正確答案為 C 項。五、 用于句型 “ It + will/would be + 時間段 + before.” 句型中， 表示 “要過多久才”，也可用于“It + may be +時間段+ before.,表示“也許要過多久才”。其否定形式“ It will/would not be +時間段+ before”表示“不久就，過不了多久就”。

5、（ 1） The field research will take John and Paul about five months; it will be a long time we meet them again（. 2007安徽卷）A. afterB. beforeC. sinceD. when（ 2）How long do you think it will be China sends a manned spacesship to the moon? （ 2006福建卷） Perhaps two or three years.A. whenB. untilC. thatD. befo

6、re 3） 3） It long before we the result of the experiment.（ 上海春招 2002）A. will not be.will knowB. is.will knowC. will not be.knowD. is.know 4） Scientists say it may be five or six yearsit is possible to test thismedicine on human patients. （ 2004 福建）A. sinceB. afterC. beforeD. when解析：答案為 BDCC ?？碱}（ 1） （

7、2）before 用于肯定的“ It + will be + 時間段+ before.句型中，表示“要過多久才”。考題（3） before在本題中 用于否定句，意為“過不了多久就會”，再由狀語從句要用一般現(xiàn)在時態(tài)替一般 將來時的用法可知 C 項為正確答案,句意是:要不了多久我們就會知道試驗的結(jié)果了。考題（4）賓語從句中含有句型“It + may be + 時間段 + before.”，表.示“也許要過多久才”，故選擇答案Co六、用于句型 it was +時間段+ before”表示 過了（多長時間）才”。其否定形式“it was not +時間段+ before”意為“不久就”,“沒過（多長時

8、間）就”。It was some time we realized the truth. （ 2005山東）A. when B. untilC. sinceD. before解析：答案為D° before用于句型it was +時間段+ before”表示 過了（多長時間）才”。該題題意是“過了一段時間我們才意識到事情的真相”。故正確答案為 C 項。-可編輯修改-七、和hardly連用，表示“剛一就該結(jié)構(gòu)主句常用過去完成時,當(dāng)hardly位于句首時，要用倒裝語序，例如：I had hardly sat down before the telephone rang.Hardly had

9、 I sat down before the telephone rang.我剛一坐下電話就響了。八、和其它相似句型的區(qū)別有時候before引導(dǎo)的時間狀語從句與since, when引導(dǎo)的時間狀語從句在下 列結(jié)構(gòu)中較相似，容易混淆?！癐t be +時間段+ since引導(dǎo)的時間狀語從句”表示“自從已經(jīng)有多長 時間了”。主句用一般現(xiàn)在時或現(xiàn)在完成時?！癐t be +時間點+when引導(dǎo)的時間狀語從句”表示“某個動作發(fā)生時，是 某個時間”。主句謂語動詞可以是一般過去時，也可以是一般將來時。（1） It is almost five years we saw each other last time

10、. （2005北京春）A. beforeB. sinceC. afterD. when（2） Did Jack come back early last night? （2005福建） Yes. It was not yet eight o' clock he arrived home.A. beforeB. whenC. thatD. until解析：答案為BBo考題（1）考查的是“It be +時間段+ since引導(dǎo)的時間 狀語從句”結(jié)構(gòu)，句意是“自從上次我們見面以來已經(jīng)近五年沒有見了”，故選 擇答案B?？碱}（2）考查的是句型“It be +時間點+when引導(dǎo)的時間狀語從句”,

11、 句意是“他昨晚回家時還不到8點”，故選擇答案Bo九、before 10ng和 long before的區(qū)另Ubefore long意為 不久，很快”(其中before是介詞，long是名詞)，常在旬 中作狀語，多與動詞的過去時或?qū)頃r連用。例如：The work will be finished before long. 工作不久就會完成。Before long he had to move on again. 不久，他被迫再次遷移。long before意為 很久以前"(其中l(wèi)ong是副詞。long before單獨使用時， before是介詞；long before后接從何時，

12、before是連詞。)這個詞組常與過去時 或過去完成時連用，跟從句時也可用在一般現(xiàn)在時的句子中。例如：She said that she had heard of it long before. 她說她早就聽說過此事。It will be long before he arrives. 還要等很久他才能到達。鞏固練習(xí)一、選詞填空1. before long/long before(1) he went to America.(2) I hope to see you .(3) She said she had read the novel .(4) I had not waited she c

13、ame.(5) 5) It was not he got to know it.2. before/since/when(1) It was four 0 clock they arrived at the town.(2) It has been 3 yearshis brother went abroad for further study.(3) It will be more than a week his mother recovers from thedisease.二、翻譯下列句子1. 不等我說一句話，她就沖出了房間。2. 他叔叔五年后才能回來。3. 不久之后，敵人就被趕走了。4

14、. 他們不久就會互相了解的。5. 他們正在考慮趁房價未漲時把房子買下來。6. 我沒等多久她就來了。7. 我們還需要很長時間才能完成這項任務(wù)。8. 不久他就學(xué)會使用計算機了。9. 過了一段時間之后他告訴了我這件事。10. 不久之后我們還會再見面的。11. 大火燒了近四個小時，消防戰(zhàn)士才把它控制住。12. 不久你就會對你的所作所為感到后悔的。13. 他剛一開口發(fā)言，就被其他人打斷了。14. 不久他就知道了三、單句改錯1. It was some time since they realized the importance os studies.2. It was at midnight when

15、 her husband came back home last night.3. It was about five hours when the workers shipped all the goods.4. We will finish the work long before. .-可編輯修改-5. It will be half a year before his brother will graduate from that college.6. I had known her before long.四、單項選擇1. Why didn't you tell him ab

16、out the meeting ?He rushed out of the room I could say a word.A. beforeB. untilC. when D. after2. How long do you think it will be China sends a manned spaceshipto the moon? Perhaps two or three years.A. whenB. untilC. thatD. before3. .He was told that it would be at least three more months he could

17、 recoverand return to work.A. whenB. before C. since D. that4. Several weeks had gone by I realized the painting was missing.A. asB. beforeC. sinceD. when5. Scientists say it may be five or six years it is possible to test thismedicine on human patients.A. sinceB. afterC. beforeD. when6. The America

18、n Civil War lasted four years the North won in the end.A. after B. before C. whenD. then7. That was really a splendid evening. It s years I enjoyed myself so much.A. whenB. thatC. before D. since8. It was some time we realized the truth.A. whenB. untilC. since D. before9 .He was told that it would b

19、e at least three more months he could recoverand return to work.A. whenB. before C. since D. that10 . Where's that report? I brought it to you you were in Mr. Black's office yesterday.A. ifB. when C. because D. beforeKeys:一、選詞填空1 . (1) Before long (2) before long (3) long before (4) long bef

20、ore (5) long before2 . when since before二、翻譯下列句子1. She had stormed out of the room before I could say a word2. It will be five years before his uncle comes back.3. It was not long before the enemy was driven out of their country.4. It won't be long before they understand each other.5. They are t

21、hinking of buying the house before the prices go up.-可編輯修改-6. I had not waited long before she came.7. It will be a long time before we finish the task.8. It wasn t long before he learned to use the computer.9. It was some time before he told me about this affair.10. It won t be long before we meet

22、again.11. The fire lasted about four hours before the firefighters could control it12. It won t be long before you feel sorry for what you have done.13. He had hardly begun to speak before the others interrupted him.或 Had he begun to speak before the others interrupted him.14. It was not long before

23、 he got to know it.三、單句改錯1. since改為 before或 was改為 is2. when改為that或去掉at3. when 改為 before4. long before 改為 before long5. will graduate改為 graduates.6. before long 改為 long before四、單項選擇1 5 ABBBC 6 10 BDDBBbefore 的用法27 The most destructive natural disaster, tsunami, came unexpectedlythey will always live

24、in peace and comfort.A after B while C where D whenbefore的用法：（時間）在之前，（位置）在的前面（2）才，（強調(diào)before引導(dǎo)的從句動作發(fā)生的很晚很遲）, 例如：He nearly knocked me down before he saw me.（3） 還未來得及/不等就（強調(diào)主句動作發(fā)生在 before 引導(dǎo)的從句動作之前）,例如：He went out before I had a chance to tell him the good news.不久就,例如：It won't be long before you ge

25、t well again.（5）寧愿也不,例如：He will die of hunger before he will steal.考例：（NMET 2000） Some one called me up in the middle of the night, but they hung up I could answer the phone.A as B since C until D before（03 W匕京）He made a mistake, but then he corrected the situation it got worse.A until B when C before D as（04 天津）It was evening we reached the litter town ofWinchester.A that B unti