1、介詞、連詞【考點直擊】1. 常用介詞及其詞組的主要用法和意義；2. 常用動詞、形容詞與介詞、副詞的固定搭配及其意義。3. 并列連詞and, but, or, so等的主要用法；4. 常用的從屬連詞的基本用法 【名師點睛】1. 介詞的功能介詞是一種虛詞，用來表示名詞或相當于名詞的其它詞語句中其它詞的關系，不能單獨使用。介詞可與名詞或相當于名詞的其它詞構成介詞短語。介詞短語可在句中作定語，狀語，表語和賓語補足語。例如：The boy over there is Johns brother. (定語)The girl will be back in two hours. (狀語)Our Englis

2、h teacher is from Australia. (表語)Help yourself to some fish. (賓語補足語)2. 常用介詞的用法辨析（1）表時間的介詞1）at, in on表示時間點用at。例如：at six oclock, at noon, at midnight。表示在某個世紀，某年，某月，某個季節(jié)以及早晨，上午，下午，晚上時，用in。例如：in the ninettenth century, in 2002, in may, in winter, in the morning, in the afternoon等。表示具體的某一天和某一天的上午，下午，晚上時，

3、用on。例如：on Monday, on July 1st, on Sunday morning等。2） since, after由since和after 引導的詞組都可表示從過去某一點開始的時段，但since詞組表示的時段一直延續(xù)到說話的時刻，因而往往要與現在完成時連用。而after詞組所表示的時段純系過去，因而要與一般過去時連用。例如：I havent heard from him since last summer.After five days the boy came back.3） in, afterin與將來時態(tài)連用時，表示“過多長時間以后”的意思，后面跟表示一段時間的詞語。Af

4、ter與將來時態(tài)連用時，后面只能跟表示時間點的詞語。After與過去時態(tài)連用時，后面才能跟表示一段時間的詞語。例如：He will be back in two months.He will arrive after four oclock.He returned after a month.（2）表示地點的介詞1）at, in, onat一般指小地方；in一般指大地方或某個范圍之內；on往往表示“在某個物體的表面”。例如：He arrived in Shanghai yesterday.They arrived at a small village before dark.There is

5、a big hole in the wall.The teacher put up a picture on the wall.2） over, above, onover, on和above都可表示“在上面”，但具體含義不同。Over表示位置高于某物，在某物的正上方，其反義詞是under。 above也表示位置高于某物，但不一定在正上方，其反義詞是below。On指兩個物體表面接觸，一個在另一的上面。例如：There is a bridge over the river.We flew above the clouds. They put some flowers on the teache

6、rs desk.3） across, throughacross和through均可表示“從這一邊到另一邊”，但用法不同。Across的含義與on有關，表示動作在某一物體的表面進行。Throgh的含義與in有關，表示動作是在三維空間進行。例如：The dog ran across the grass.The boy swam across the river. They walked through the forest. I pushed through the crowds.4) in front of, in the front ofin front of 表示“在某人或某物的前面”，在

7、某個范圍以外；in the front of 表示“在的前部”，在某個范圍以內。例如：There are some tall trees in front of the building.The teacher is sitting in the front of the classroom.3. 介詞的固定搭配 介詞往往同其他詞類形成了固定搭配關系。記住這種固定搭配關系，才能正確使用介詞。（1）介詞與動詞的搭配listen to , laugh at, get to, look for wait for, hear from, turn on, turn off, worry about,

8、think of, look after, spendon, 等。（2）介詞與名詞的搭配on time, in time, by bus, on foot, with pleasure, on ones way to, in trouble, at breakfast, at the end of, in the end等。（3）介詞與形容詞的搭配be late for, be afraid of, be good at, be interested in, be angry with, be full of, be sorry for等。4. 連詞的功能用來連接詞，短語，從句或句子的詞叫連詞

9、。連詞是一種虛詞，在句中不能單獨使用。連詞可分為兩類：并列連詞和從屬連詞。5. 并列連詞并列連詞用來連接具有并列關系的詞，短語或句子。常見的并列連詞有：(1)表并列關系的and, bothand, not onlybut also, neithernor等。(2)表選擇關系的or, eitheror等。(3)表轉折關系的but, while等。(4)表因果關系的for, so等。6. 從屬連詞從屬連詞用來引導從句。常見的從屬連詞有：(1)引導時間狀語從句的after, before, when, while, as, until, till, since, as soon as等。(2)引導條

10、件狀語從句的if, unless等。(3)引導原因狀語從句的because, as, since等。(4)引導目的狀語從句的so that, in order that等。(5)引導讓步狀語從句的though, although, even if等。(6)引導結果狀語從句的so that, sothat, suchthat等。(7)引導比較狀語從句的than, asas等。(8)引導名詞從句的that, if , whether等。7. 常用連詞的用法辨析（1） while, when, as這三個連詞都可引導時間狀語從句，但用法有所不同。1) 當某事正在進行的時候，又發(fā)生了另一件事。Whil

11、e, when, as 都可用來引導表示“背景”的時間狀語從句。例如：As/When/While I was walking down the street I noticed a police car.2) 當兩個長動作同時進行的時候，最常用的是while。例如：While mother was cooking lunch, I was doing my homework.3) 當兩個動作都表示發(fā)展變化的情況時，最常用的是as。例如：As children get older, they become more and more interested in things around the

12、m.4) 當兩個短動作同時發(fā)生時，或表示“一邊一邊”時，最常用as。例如：Just as he caught the fly, he gave a loud cry.She looked behind from time to time as she went5) 當從句的動作先于主句的動作時，通常用when。例如：When he finished his work, he took a short rest.6) 當從句是瞬間動作，主句是延續(xù)性動作時，通常用when。例如：When John arrived I was cooking lunch.（2）as, because, since

13、, for這四個詞都可表原因，但用法有區(qū)別。1) 如果原因構成句子的最主要部分，一般用because。因此，because引導的從句往往放在句末。例如：I stayed at home because it rained.-Why arent you going?-Because I dont want to.2) 如果原因已被人們所知，或不如句子的其它部分重要，就用as或since。Since比as稍微正式一點。As和since 引導的從句一般放在句子的開頭。例如：As he wasnt ready, we left without him.Since I have no money, I

14、cant buy any food.3) for用來補充說明一種理由，因此，for引導的從句幾乎可以放在括號里。For引導的句子不放在句子的開頭。例如：I decided to stop and have lunch-for I was feeling quite hungry.（3）if, whetherif和whether都可作“是否”講，在引導賓與從句是一般可互換。例如：I wonder whether (if) you still study in that school.I dont know whether (if) he likes that film.在下列情況下，只能用whe

15、ther,不能用if：1) 引導主語從句時。例如：Whether he will come to the party is unknown. 2) 引導表語從句時。例如：The question is whether I can pass the exam.3) 在不定式前。例如：I havent made up my mind whether to go there or not.（4）sothat, such.that1) sothat中的so是個副詞，其后只能跟形容詞或副詞，而such.that中的such是個形容詞，后接名詞或名詞短語。例如：Im so tired that I can

16、t walk any farther.It was such a warm day that he went swimming.2) 如果在名詞之前有many, much, little, few時，用so,不用such。例如：He has so little education that he is unable to get a job.I have had so many falls that I am black and blue all over.（5）eitheror, neithernor, not onlybut also這三個連詞詞組都可連接兩個并列成分。當它們連接兩個并列主

17、語時，謂語動詞要隨相鄰的主語變化。例如：Either you or he is wrong.Neither he nor his children like fish. Not only the teacher but also the students want to buy the book.（6）although, but這兩個連詞不能用在同一個句子中。例如：我們不能說“Although he is over sixty, but he works as hard as others.”這個句子應改為：Although he is over sixty, he works as hard

18、 as others.或He is over sixty, but he works as hard as others.（7）because, so這兩個連詞同樣不能用在同一個句子中。例如：我們不能說“Because John was ill, so I took him to the doctor.” 這個句子應改為Because John was ill, I took him to the doctor.或John was ill, so I took him to the doctor.【實例解析】 1.-When will Mr Black come to Beijing? -_

19、September 5. A. On B. To C. At D. In 答案：A。表示時間的介詞的用法。表示某一天用介詞on。 2.The boys felt sad as they lost _ the girls in the talk show. A. by B. in C. to D. on 答案：C。該題考查的是介詞和動詞的固定搭配。lose表示輸給誰的時候用介詞to。應選C。 3-I like riding fast. Its very exciting. -Oh! You mustnt do it like that, _ it may have an accident. A.

20、 and B. or C. so D. but 答案：B。該題考查的是并列連詞的用法。答語的意思是“你不要那樣做，否則會發(fā)生事故的?！痹谶@四個并列連詞中，只有or含有這樣的意思，所以應選B。 3. John fell asleep _ he was listening to the music. A. after B. before C. while D. as soon as 答案：C。該題考查的是引導時間狀語從句的常用從屬連詞的用法。本句的含義是“約翰在聽音樂的時候睡著了?！北硎驹诟赡呈聲r發(fā)生了某個事情” 通常用while。因此應選C。【中考演練】一. 單項填空 1. We travele

21、d overnight to Paris and arrived _ 5 oclock _ the morning. A. on; in B. at; in C. at; on D. in; on 2. Wheres Lily? We are all here _ her. A. beside B. about C. except D. with 3. She sent her friend a postcard _ a birthday present. A. on B. as C. for D. of 4. Jack has studied Chinese in this school _

22、 the year of 2000. A. since B. in C. on D. by 5. -What is a writing brush, do you know? -Its _ writing and drawing. A. with B. to C. for D. by 6. English is widely used _ travellers and business people all over the world. A. to B. for C. as D. by 7. _ the help of my teacher, I caught up with the oth

23、er students. A. Under B. In C. With D. On 8. Hong Kong is _ the south of China, and Macao is _ the west of Hong Kong. A. in; to B. to; to C. to; in D. in; in 9. -Youd better not go out now. Its raining. -It doesnt matter. My new coat can keep _ rain. A. in B. of C. with D. off 10. Japan lies _ the e

24、ast of China. A. to B. in C. about D. at 11. -Will the foreigners have any problems talking with Chinese in 2008? -I dont think so. Now _ the young _ the old can speak some English. A. eitheror B. not only but also C. neithernor D. bothor 12. We didnt catch the train _ we left late. A. so B. because

25、 C. but D. though 13. Tom failed in the exam again _ he wanted to pass it very much. A. if B. so C. though D. as 14. I wont believe that the five-year-old boy can read five thousand words _ I have tested him myself. A. after B. when C. if D. until 15. The book was so interesting that he had read it

26、for three hours _ he realized it. A. when B. until C. after D. before 16. -This dress was last years style. -I think it still looks perfect _ it has gone out this year. A. so that B. even though C. as if D. ever since 17. Hurry up, _ you will miss the train. A. and B. so C. however D. or 18. The mou

27、ntain was _ steep _ few people in our city reached the top. A. soas B. sothat C. asas D. tooto 19. -Do you remember our pleasant journey to Xian? -Of course. I remember everything _ it happened yesterday. A. as soon as B. even though C. rather than D. as if 20. _ you cant answer this question, we ha

28、ve to ask someone else for help. A. Although B. While C. Whether D. Since二. 用適當的介詞填空 1. -How are you going to the train station to meet your aunt? -Im going there _ my car. 2. Mum, today is Mothers Day. Mike and I want to invite you to have dinner _ us at Zhonglou Restaurant. 3. Hangzhou is famous _

29、 the West Lake. 4. Today some newly-produced mobile phones can take pictures _ a camera. 5. Could you tell me if there is a flight to the capital _ March, 25th? 6. We all agree _ you. Lets start at once. 7. There is a big shop _ the other side of the road. 8. -Which necklace have you lost? -The one you gave me _ my birthday. 9. You should take more exercise. Its good _ your health. 10. It is clear that fish cannot live _ water.三. 用適