1、连词连词是短语、连接词、从句或句子的一种虚词，不能单独作句子成分。按词义和句法作用分类，连词分为两类-并列连词和从属连词。连词的用法：1. 并列连词的用法(1) 表示引申和增补意义 and的用法 连接两个或两个以上单词、短语或句子，意为“和，同，与”，表示顺承关系Eg: Lisa and I decided to walk to school. Its important for us to develop good eating and living habits. 表示增补和强调，意为“而且，并且”Eg: He likes these books, and Tom likes them,
2、too. both. and.的用法只能连接两个并列成分，意为“.和.”、“既.又”，并列成分做主语时，谓语动词用复数形式Eg: Both she and Sarah are interested in talent shows. Cindy can both sing and dance. neither. nor.的用法连接两个并列成分，意为“既不.又不.”，并列成分做主语时，谓语动词的形式遵循就近原则。Eg: Neither you nor I am going to attend the meeting. He has neither money nor time. not only.
3、 but also.的用法连接两个并列成分，意为“不仅.而且.”。并列成分做主语时，谓语动词的形式遵循就近原则。连接两个分句，not only位于句首时，句子要倒装。Eg: Not only my sister but also my parents like the actor very much. Not only did he say it, but also he did it. as well as的用法连接两个或两个以上并列成分，意为“同.一样；也”。并列成分做主语时，谓语动词的形式遵循就远原则。Eg: The teacher as well as the students enj
4、oys the school art festival. She can speak Chinese and English as well as Japanese.(2) 表示转折意义 but意为“但是”Eg: We reached school on time but he was late. while意为“然而”，表示对比Eg: My father likes reading while my mother likes listening to music. yet意为“然而，可是”,常连接两个并列分句Eg: Life is fine and enjoyable, yet you sh
5、ould learn to enjoy your fine life.(3) 表示选择关系 or连接两个并列成分，意为“或”，表示一种选择关系。并列成分做主语时，谓语动词谓语动词的形式遵循就近原则。Eg: He or I am not responsible for the accident. Do you want to take a shower, or have dinner first? either.or.连接两个并列成分，意为“要么.要么.”，表示一种选择关系。并列成分做主语时，谓语动词谓语动词的形式遵循就近原则。Eg: Either she or I am right.(4) 表
6、示因果关系for意为“因为”，语气比because弱，不能用于回答why的问句，不能置于句首。Eg: Youd better put on your coat, for its rather cold outside.2. 从属连词的用法(1) 引导状语从句 引导时间状语从句引导时间状语从句的从属连词主要有when, while, as, as soon as, before, after, since, until/til等。Eg: What were you doing when the rainstorm came? His father came back home while he
7、was playing computer game. Ill call you as soon as I arrive Shanghai. As she sang, the tears ran down her cheeks. He brushed his teeth before he went to bed. After Mary finished her homework, she helped her mother cook dinner. I have learned English since I was five years old. She didnt go to the mo
8、vies until the rain stopped. 引导地点状语从句引导地点状语从句的从属连词主要有where, wherever等Eg: Where there is a will, there is a way. I want to visit wherever I like. 引导原因状语从句引导原因状语从句的从属连词主要有because, since, as等Eg: He missed the first bus because he got up late. Since you say so, there must be something in this box. As th
9、e table is covered by a cloth, I dont know whats on it. 引导结果状语从句引导结果状语从句的从属连词主要有so that, so.that., such.that.等Eg: The problem is very difficult, so that he cant solve it. Pandas are so cute that many people like them. She is such a kind person that she has a lot of friends. 引导条件状语从句引导条件状语从句的从属连词主要有i
10、f, unless, as long as等Eg: If you come to the party, youll be happy. You cant make progress unless you realize your weakness. As long as you stick to your dream, it will come true one day. 引导让步状语从句引导让步状语从句的从属连词主要有though, although, even if, even though等，though, although不能与but 连用。Eg: Although/though sh
11、e failed, she didnt give up. Even if/though he was disabled, everyone respected him. 引导目的状语从句引导目的状语从句的从属连词主要有so that, in order that等Eg: The girls practice dancing every day so that/in order that they can present a perfect performance. 引导方式状语从句引导方式状语从句的从属连词主要有as if, as though, asEg: He looked at me a
12、s if/as though I had been mad. You should do as I say. 引导比较状语从句引导比较状语从句的从属连词主要有as, thanEg: The building is as tall as that one. The speed of the sound is not so/as fast as that of the light. Im more outgoing than my sister.(2) 引导名词性从句引导名词性从句的从属连词主要有that, if,whether等，在句中不作任何成分Eg: There is no doubt th
13、at he is the winner. They wondered whether they would reach their goals.练习：1.Hurry up,_well not catch the bus. A. and B. but C. or D.so 2. Youd better travel around Nanjing with a local tour guide_ you want to know more about its culture. A. unless B. until C. although D. if 3. Youd better get up at
14、 6:30,_you will be late for school.A. if B. or C. and D. but 4. Jess didnt leave her office_ the police arrived. A however B. whenever C. while D. until 5. Going to the movies is good,_I really only like listening to music. A and B. but C. so D. or 6. -Excuse me, may I come in?-Not yet. Please wait
15、on your chair_ your name is called. A. and B. until C. after D. since 7. Bruce is always helpful, and he is_lovely_all of us like him very much.A. too; to B. neither; nor C. so; that D. such; that 8. Your parents love you very much_ they seldom say, “I love you.” A. unless B. or C.so D. although 9._
16、we dont have enough money, we wont buy any useless things. A. Since B. Until C.Because D. Although 10.-Which do you prefer, tea_ coffee?-Tea, please.A. but B. so C. or D. and 11. She speaks_ Chinese_French. Instead, she speaks English.A. either; or B. not only; but also C,.both; and D. neither; nor
17、12. My brother has a great sports collection, _ he plays sports every day. A. or B. but C.and D. nor13._I got back,I found my mother cooking for me. A. When B. Before C.Since D. Although14.We missed the last bus and didnt have enough money for taxi, _ we had to walk home.A. because B. for C.so D. since 15. Its four years_I worked here. A. since B. when C. before D. until
