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连词  

2014-05-05 14:15:14|  分类: 初中语法 |  标签: |举报 |字号 订阅

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20.连词

  连词是一种虚词,它不能独立担任句子成分而只起连接词与词,短语与短语以及句与句的作用。连词主要可分为两类:并列连词和从属连词。并列连词用来连接平行的词、词组和分句。如:and,but,or,nor,so,therefore,yet,however,for,hence,as well as,bothand,not onlybut also,eitheror,neithernor,(and)then等等。

20.1并列连词与并列结构

 并列连词引导两个并列的句子。

1) andor

 判断改错:

 ()They sat down and talk about something.

 ()They started to dance and sang.

 ()I saw two men sitting behind and whisper there.

 ()They sat down and talked about something.

 ()They started to dance and sing.

 ()I saw two men sitting behind and whispering there.

解析:

 第一句:and连接两个并列的谓语,所以talk应改为talked

 第二句:and连接两个并列的动词不定式,第二个不定式往往省略to,因此sang应改为sing

 第三句:and连接感观动词saw后面的用作的宾补的两个并列分词结构,因此whisper应改为whispering

注意:and还可以和祈使句或名词词组连用表示条件。(or也有此用法)

  Make up your mind,and you'll get the chance.

 =If you make up your mind,you'll get the chance.

  One more effort,and you'll succeed.

 =If you make one more effort,you'll succeed.

2) bothand 两者都

 She plays (both)the piano and the guitar.

3) not onlybut(also),as well as不但…而且)

   She plays not only the piano,but(also) the guitar.

 注意:not onlybut also关联两个分句时,一个分句因有否定词not而必须倒装。

  Not only does he like reading stories,but also he can even write some.

 4) neithenor意思为"既不……也不……"谓语动词采用就近原则,与nor后的词保持一致。

   Neither you nor he is to blame.

 

20.2比较andor

 1)并列结构中,or通常用于否定句,and用于肯定句。

 2)但有时and也可用于否定句。请注意其不同特点:

  There is no air or water on the moon.

  There is no air and no water on the moon.

 在否定中并列结构用or连接,但含有两个否定词的句子实际被看作是肯定结构,因此要用and

典型例题

 ---I don't like chicken___fish. 

 ---I don't like chicken,___I like fish very much.

 A.andand B.andbut C.orbut D.orand

 答案C。否定句中表并列用or,but表转折。

判断改错:

  ()We will die without air and water.

  ()We can't live without air or water.

  ()We will die without air or water.

  ()We can't live without air and water.

 

20.3表示选择的并列结构

 1)or 意思为"否则"

  I must work hard,or I'll fail in the exam.

 2)eitheror 意思为"或者……或者……"。注意谓语动词采用就近原则。

  Either you or I am right.

 

20.4表示转折或对比

 1)but表示转折,while表示对比。

  Some people love cats,while others hate them.

典型例题 

---Would you like to come to dinner tonight?  

---I'd like to,___I'm too busy.

 A.and B.so C.as D.but  

 答案Dbut与前面形成转折,符合语意。而表并列的and,结果的so,原因的as都不符合句意。

 2)notbut…意思为"不是……而是……"

  notbut后面的用词要遵循一致原则。

  They were not the bones of an animal,but (the bones)of a human being.

 

20.5表原因关系

1)for

判断改错:

 ()For he is ill,he is a bsent today.

 ()He is a bsent today,for he is ill.

 for是并列连词,不能置于含两个并列分句的句子的句首,只能将其放在两个分句中间。

2) so, therefore

  He hurt his leg,so he couldn't play in the game.

注意:

 a.两个并列连词不能连用,但therefore,then,yet.可以和并列连词连用。

   You can watch TV,and or you can go to bed.

   He hurt his leg,a ndso / and therefore he couldn't play in the game.

 b.althoughyet…,但although不与but连用。

  () Although he was weak,but he tried his best to do the work.

  () Although he was weak,yet he tried his best to do the work.

 

20.6比较sosuch

 其规律由sosuch的不同词性决定。such是形容词,修饰名词或名词词组,so是副词,只能修饰形容词或副

词。so还可与表示数量的形容词manyfewmuchlittle连用,形成固定搭配。

so+adj.         such+a(n)+n.

so+adj.+a(n)+n.   such+n.(pl.)

so+adj.+n.(pl.)   such+n.(pl.) 

so+adj.+n.[不可数]  such+n.[不可数]

so foolish        such a fool 

so nice a flower     such a nice flower

so many/few flowers   such nice flowers

so much/little money.   such rapid progress 

so many people      such a lot of people

 so many已成固定搭配,a lot of虽相当于many,但a lot of为名词性的,只能用such搭配。

 sothatsuchthat之间的转换既为sosuch之间的转换。

 

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