1、 连词【定义】 连词是连接单词、短语或句子的一种虚词，起辅助作用，在句子中不单独作成分。根据在句子中所起的作用不同，连词通常分为并列连词和从属连词。并列连词用来连接属于同一层次并具有同等句法功能的词、短语或句子；而从属连词用来连接不同层次，带有主从关系的词、短语或句子。【知识归纳】一、并列连词并列连词词义例句and和，又，及He is laughing and talking.but但是，可是(表转折)He is poor, but honest.or或者(表选择)Would you like tea or coffee?so因此，所以(表结果)He was ill, so he couldn
2、t go to school yesterday.bothand两者都Both you and she are right.not onlybut also不但而且Not only you but also everyone here likes watching football match.eitheror或者或者Either he or I am right.neithernor既不也不Neither the twins nor Li Lei has been to Shanghai. 【特例清单】1.“祈使句+or+结果句” = “If you dont,youll”，其中or意为“否
3、则”例：Hurry up, or you will be late. 快点，否则你就会迟到了!=If you hurry up, you wont be late. 如果快点，你就不会迟到了。=If you dont hurry up, you will be late. 如果不快点，你就会迟到了。2. but “但是”，用来表示转折关系，注意它不能与though,although连用3. so “所以，因此”用来表示因果关系，注意它不能与because,since,as连用4. for “因为”，表示原因，主要用来进行补充说明，没有因果关系5. not onlybut also,neithe
4、rnor和eitheror连接两个主语时，谓语动词与最近的主语保持一致；bothand连接两个主语时，谓语动词要用复数形式；而as well as连接两个主语时，谓语动词同前面的主语在人称和数上要保持一致例：Not only I but also my mother is going to the museum. 不仅我而且我的母亲也要去博物馆。Neither you nor I am right. 你和我都不对。Either you or he is right. 要么你对，要么他对。Both Li Ping and her father take exercise every mornin
5、g.李萍和她的父亲每天早晨都进行锻炼。二、从属连词分类连词词义例句表示时间when当时The students were talking when the teacher came in.while当时I was doing my homework while my father was watching TV.after在之后Ill go to play football after I finish my homework.before在之前Please turn off the light before you leave the room.till,until直到为止Ill wait
6、till/until he arrives. 不到不She wont get home till/until it gets dark.as soon as一就Ill call you as soon as I get to Beijing.since自从He has lived here since 1980.表示条件if如果Well go for a picnic if it doesnt rain.unless除非，如果不They will have a picnic unless it rains next Sunday.表示原因because因为He didnt come becau
7、se he was ill.since既然Since we have got ready for it, lets set off.as因为As Im not at home, please leave a message.表示目的so that以便于He got up early so that he could get there in time.in order that为了He works hard in order that he can go to a good college.表示结果sothat如此以至于The box is so heavy that we cant carr
8、y it.suchthat如此以至于It is such a heavy box that nobody can move it away.表示让步though/although虽然He would be happy though he should have to live alone.He often helps others although he is not rich.表示比较as像一样Do as you like.asas和一样He ran as fast as Mike.not asas不及It isnt as easy as you think.than比She jumped
9、higher than Rose. 【特例清单】1. if意为“是否”时，引导宾语从句；意为“如果”时，引导条件状语从句。例：Could you tell me if theyll come tomorrow? 你能告诉我他们明天会来吗？You can go out to play if your homework is finished.如果你的作业做完了，你就可以出去玩了。2. 从属连词sothat和suchthat都表示“如此以至于”，但用法不同：sothat结构中的so为副词，后面跟形容词或副词；suchthat中的such为形容词，后面接名词(名词前可以有形容词或副词修饰)。例：He was such a clever boy that he thought out a very good idea.= He was so clever a boy that he thought out a very good idea.这个男孩很聪明，想出了一个非常好的办法。 5原创精品资源学科网独家享有版权，侵权必究！学科网（北京）股份有限公司
