初中连词专题讲解及练习

1、小菜学习英语practice makes perfect一常见的从属连词有：语法：连词1引导时间状语从句的after, before, when, while, as, until, till, since， as soon as 等；(2) 引导条件状语从句的if, unless等；(3) 引导缘由状语从句的because, as, since等；(4) 引导目的状语从句的so that, in order that等(5) 引导让步状语从句的though, although, even if= even though（即使）； however, whatever, whoever, whe

2、never, wherever=no matter +疑问词(6) 引导结果状语从句的sothat, such等；that(7) 引导比较状语从句的than, as等；as(8) 引导名词从句的 that, if , whether等；二常见连词 and, but, so, orand、but 、 so与or （我们可以用连词来连接两个意思联系紧密的句子，也可以连接两个相同的成分；）1、and 的用法：（1）and 是“和，仍，而且”的意思，用于连接形容词、副词、名词或句子；eg：i ve got a red and blue shirt.我有一件红蓝相间的衬衫；（连接两个形容词）please

3、 do your homework slowly and carefully.请渐渐，认真地做你的家庭作业；（连接两个副词）bob and janet danced.鲍勃和珍妮特跳了舞；（连接两个名词）句子）i met john and we talked for a while.我遇到了约翰，仍聊了一会儿；（连接两个（2 ）当and 用于连接两个句子或短语时，我们可以省略重复的部分；eg：he is sitting there and he is watching tv.他正坐在那里看电视；1 / 12小菜学习英语practice makes perfecti need to go to t

4、he post office and to the library.我要去邮局和图书馆；（3 ）在连接两个单词或简短的句子时，and 前不用加逗号；eg： i bought a hat and a scarf.我买了一顶帽子和一条围巾；（4 ）假如 and 连接的内容超过两个，就需要使用逗号，但and前不适用逗号；eg： i bought a hat, a scarf and a coat.我买了一顶帽子，一条围巾和一件外套；（ 5）遗忘使用 and是一个常见的错误；eg：he brought chicken wings, hot dogs to the barbecue.错误 he brou

5、ght chicken wings and hot dogs to the barbecue.（正确）2 、or或者，否就，表示挑选；如: get up early, or youll be la；tewhich do you prefer, this one or that one. 当or表示“和”时，用于否定句或疑问句中；而and用于确定句中3 、but 的用法：（ 1） but意为但是，可是；用于连接前后内容不同或相反的句子，表示转折的含义； eg： joan can sing but she cant dance. 琼会唱歌，但不会跳舞；（确定+but+ 否定） our flat i

6、s new but very small.我们的公寓很新，但很小；（好+but+ 坏）（ 2 ）我们仍可以用 but 来比较句子的主语；和and 一样，使用 but 时，也要防止重复相同的部分；eg：sally likes swimming but doris doesnt like swimming.萨利喜爱游泳，但多利不喜爱；（ 3）有时候，我们也可以把否定的部分置于but 的前面；eg： martin isnt happy but i am.马丁不高兴，但我很高兴；4 、so的用法：意为因此，所以，表达的是结果；so不能放在句首；2 / 12小菜学习英语practice makes pe

7、rfect缘由结果it rained heavily，雨下地很大，i enjoy drawing,我喜爱画画，so we stayed at home.所以我们呆在家里；so i am in the art club.所以我参与艺术社；because 意为由于，由于，表达缘由；在一个句子不能同时显现because 和so；eg： he was hungry, so he ate a lot.他饿了，所以吃了许多东西；专项练习：用连词 and ， but ，和so填空；my brother is ill, i have to stay at home. he has a lot of money

8、, he spends little.take some medicine, you will feel better.i came to see him, he wasnt at home. work hard, you will pass the english exam. 单项填空1. they are good at swimming, i am not.a. andb. butc. sod. or2. the old woman cant read write.a. andb. orc. butd. and can3. john felt tired, he still went o

9、n working.a. because; sob. although; butc. /; sod. /; but4. he is rich, he isnt happy.a. butb. andc. ord. so5. lucy has seen the film, lily hasnt.a. andb. orc. butd. so3 / 12小菜学习英语practice makes perfect6. would you like to go to the cinema with me.- i ldike to, im afraid i have no time.a. sob. orc.

10、andd. but7. jenny, put on your coat you will catch a cold.a. butb. andc. ord. so8. last night i went to bed late, i am really tired now.a. sob. orc. butd. because三语法附加：常用连词的用法辨析（1） ） while, when, as都可引导时间状语从句三者均可译为 “在时候 ”；when 引导的从句，动词既可以是连续性的，也可以是终止性的；一般来说，当主句的动作正在进行时， when 引导的从句的动作才发生when 后面接短暂性动作

11、 ；while 引导的从句中，动词只能是连续性的，一般来说，当while 引导的从句的动作正在进行时，主句的动作才发生； while 仍能引导两句都是进行时（while 后面接连续性动作）；as表示随着短暂动作的发生，另一行为相伴发生；he was riding to school when he was hit by a car this morning. you'd better turn off the water while you brush your teeth.she sang as she walked.她一边走一边唱歌；注：while 仍可以表示对比，而，却we we

12、re leaving school when it began to rain. he likes coffee, while she likes tea.4 / 12小菜学习英语practice makes perfect（2） ） as, because, since , for这四个词都可表缘由，但用法有区分；1) 假如缘由构成句子的最主要部分，一般用because ；因此， because 引导的从句往往放在句末；例如： i stayed at home because it rained.- why aren t you going-.- because i don t want t

13、o.2) 假如缘由已被人们所知，或不如句子的其它部分重要，就用as或since ；since 比as略微正式一点； as 和since引导的从句一般放在句子的开头；例如：as he wasn t ready, we left without him.since i have no money, i can t buy any food.3) for ：是并列连词 其余三者为从属连词，它有时可表示因果关系通常要放在主句之后，且可与 because换用；有时不表示因果关系， 而是对前面分句内容的说明或推断也要放在主句之后，但不能与 because换用；比较：the ground is wet, f

14、or =because it rained last night.地面是湿的，由于昨晚下过雨；it must have rained last night, for the ground is wet this morning.昨晚肯定下过雨，你看今日早上地面是湿的；此句不能用because代 for（3） ） if, whether“是否”讲，在引导宾语从句是一般可互换；在ask ，wonder ， not know, want to know ，not be sure等后常用 whether或if 从句；在以下情形下，只能用whether,不能用 if ：1) 引导主语从句时；例如：whe

15、ther he will come to the party is unknown.2) 引导表语从句时；例如：the question is whether i can pass the exam.3) 在不定式前；例如：i haven t made up my mind whether to go there or not.4 ）与 or not连用.he doesn t know whether he shouldalvee or not.5 / 12小菜学习英语practice makes perfect5 在介词后； i m thinking about whether i will

16、 go there.词汇拓展：1.动词+fora）动词+foraccount for 说明；说明, answer for 对负责,apply for 申请；恳求,apologize for 为而赔礼, beg for 恳求, call for 要求,carefor 在意, enter for报名参与, fight for为而战, hope for 期望,inquire for 查询；求见, leave for 离开某地到另一地 , look for查找, long for 希望,mistake for 误认为, plan for 方案做某事, prepare for为作预备,provide f

17、or为供应, reach for 伸手去拿, run for 竞选, stand for象征,search for 搜寻, send for 派人去请, speak for 陈述看法、愿望 , take for当作, wish for期望, wait for等待；b动词+sb.+ for +sth.ask for 要求得到,blame for 因批评, excuse for宽恕, forgive for谅解, pardon for原谅,pay for 花钱买, praise for赞扬, punish for 对进行惩处 ,push for 催逼， reward for答谢, thank fo

18、r 对表示谢意；2. be +形容词+forbe anxious for 急于做, be eager for 期望, be bad for 有害于,be convenient for便于, be good for 利于, be famous for 以 出名,be fit for适合于, be grateful for对心存感谢 , be impatient for对不耐烦,be late for 迟到, be necessary for有必要, be ready for作好预备,be sorry for为而懊悔, be responsible for对负责,be suitable for适合

19、于, be unfit for不适合, be useful for对有作用； 3.for+ 名词构成的词组for all 尽管，for a song 特别廉价地， for certain准确地， for company 陪着，for ever永久，for example 例如， for fear 以免，for fair确定地， for free免费， for fun 为了好玩， for good 永久， for instance 比方， for luck 祝愿， for life终身， for long 长期，for nothing白白地， for once 有生第一次， for onesel

20、f替自己， for pleasure为了消遣， for reason 由于 理由，for sale 供出售， for shame 真不害臊， for short简称，for sport好玩， for sure 准确地；4.动词+副词/ 名词+for 构成的短语be in for 将遇到，make up for 补偿，go in for 从事，look out for 提防，take sth. for granted把当作理所当然 ,have an ear for 音感好,have a gift for有某方面的天赋；（4） ） sothat, such.thatsotha中t 的so是个副词，

21、其后只能跟形容词或副词，而such.that中的such 是形容词，后接名词或名词短语；例如：i m so tired that i can t walk any farther.= .soadj.thatcatono t adj.=to+do“太以至（不能）”he is so old that he can t work.=he is too 他old太t老o w了o，rk.不能工作； so形容词 a/an 可数名词的单数that 从句；somany/much/few/little名词 that 从句；such a/an 形容词可数名词单数that 从句；6 / 12小菜学习英语practi

22、ce makes perfectsuch 形容词不行数名词/ 可数名词复数 that 从句；用so, such, such a/an填空；1 hangzhou is （） beautiful a city that lots of visitors come here every year. 2 she is（） good girl that we all like her.3 there are（） many students on the playground.（5） ） eitheror, neithernor, not onlybut al当so它们连接两个并列主语时，谓语动词邻近原就

23、；例如： a. either you or he be wrong.b. neither he nor his children like fish.c. not only the students but also the teacher （want） to buy the book.（ 6）表示转折关系； but 但是yet 然而while 然而although,but 这两个连词不能用在同一个句子中；although he is over sixty, he works as hard as others.或he is over sixty, but he works as hard a

24、s others.（ 7） because, so 这两个连词同样不能用在同一个句子中；（ 8）表示挑选关系or 或者；否就not.but.不是而是either.or.或者或者专项练习1. he studies hard, he will never pass the examination.a. ifb. unlessc. even ifd. even though2 peter likes reading a newspaper he is having breakfast.a untilbwhilec becausedthough7 / 12小菜学习英语practice makes pe

25、rfect3 jenny, put on your coat you will catch a cold.a but b and c ord so 4 may i go to the concert with you.i'm afraid not you have a ticket, because i have only one.a sincebifcunlessdthough5 the teacher speaks very loudly all the students can hear her.a so thatb becausecsincedwhen6 bob is youn

26、g, he knows a lot.a because b so c but d unless 7 what do you think of this skirt.it's beautiful and it fits me well, i like it very much.a since b so cbut8 jane, please turn off the lights you leave the classroom.a afterb beforec untild but9 stop smoking, you will get better soon.a andb or c bu

27、t d after10 it's difficult to make her dream come true，she never gives up.a thoughb unlessc becaused if11 you have to leave now you can catch the early bus.a so thatbas soon ascbecaused if12usually, we don't know how important something is we lose it.a orbuntilc as soon as8 / 12小菜学习英语practic

28、e makes perfect13ineedone morestudenttohelpme tocarrythebook.pleaseask lucy lily to come.a neither; norbnot only; but also c both; andd either; or14i can't believe a little girl can write many books.a so; sobsuch; suchc so; suchd such; so 15i heard that linda moved to london and found a new job

29、there.yes. she works there she can see her parents more often.a untilb as soon asc so thatdwhen16i would go with him i were here.you mean you would go with him no matter he agrees or not.a if; ifbif; whethercwhether; ifd whether; whether17help others whenever you can, you'll make the world a nic

30、er place.a andborcunlessd but18 hamburgers are junk food, many children like them.a ifb unlessc becausedalthough19 switzerland is very small, it is the land of watch and it is very rich.a though; butbbecause; socbecause; /d though; /20. i don't like bread. i won't eat it i am very hungry.a i

31、fb when c as d unless21. tom maryspeaksgoodchinese,so theycan communicatewiththese chinese students very well.9 / 12小菜学习英语practice makes perfecta neither; norb not only; but alsocboth; andd either; or22. you'd better look up the new word in a dictionary you don't know it.a ifb thatc thoughd

32、whether23. listen. it is still noisy in the head teacher's office.go and see they have finished correcting the papers yet.a thoughb whethercunlessdwhile24. tom knew nothing about it his sister told him.a sincebifc untild unless25. my uncle has been taught in this school he was twenty years old.a

33、 sincebforc untild after26. what is our head teacher like, do you know.oh, he is very kind he looks very serious.a. because b though c if d when27 would you like to go bike riding with us tomorrow.sure, i am busy.a sincebunless c whend until 28 what do you like doing after class.i like not only read

34、ing painting.a andbbut also c ord for29. the art club is for members only. you can't go in you are a member.a unlessbbecausec ifd though30. you don't go to bed earlier, you will feel tired in the morning.10 / 12小菜学习英语practice makes perfecta unlessbifcthoughd until31scientists say it may be a

35、 few years it is possible to test the new medicine on patients.a becauseb afterc beforedsince32 alice wanted to know her grandmother liked the bag.a. that b. if c. which d. what33. saturday sunday is ok. i ll be free in these two days.a. either; orb. either; norc both; andd one; the other34 li lei said he could finish his homework before six o clock.a. ifb. whatc. thatd. when35. go