说到连词大伙可能最先想到的就是andorbut，除去这部分还有什么连词呢，这部分连词的结构、使用方法又是什么样的呢，下面就来详细认识一下初中英语连词的具体使用方法。
连词的概念
连词是连接字、短语、从句与句子的词，是虚词，因此它不可以独立担任句子成分。连词主要分为两大类：并列连词和从属连词。并列连词用来连接并列关系的词、词组或分句。它包括：and，or，but，so，for，bothand，eitheror，neithernor，not onlybut also。
从属连词用来引导从句，它包括： that， when， till， until， after， before， since，because，if，whether，though，although，sothat，so that，in order that，as soon as
并列连词用来连接具备并列关系的词，短语或句子。容易见到的并列连词有：
表并列关系的and, bothand, not onlybut also, neithernor等。
表选择关系的or, eitheror等。
表转折关系的but, while等。
表因果关系的for, so等。
要点概述
并列连词和从属连词的使用方法
连词是连结单词、短语、从句或句子的虚词， 在句子中不单独作句子成份。
连词按其性质可分为：
1．并列连词 如：and, or, but, for, 等， 连接并列的词与词，短语与短语，句子与句子。
如：Rice and potatoes are common foods. （词与词）
Today we can travel by plane. （短语与短语）
Many trees lose their leaves in winter, but evergreen trees do not. （ 句子与句子）
关联连词是一类成对用的连词
如：bothand, notbut.
not onlybut also not onlybut as well
eitheror neithernor
关联连词需要后接同样的语法结构。
如：Either the windows were opened or the door was opened.
2．从属连词 如：that, whether, when, because, though 等， 用以引导名词性从句和状语从句。
3．从属连词引导的从句不能被断成一个句子。 假如断开，就错了。
如：When the alarm clock rang. （不完整）
4． though 引导让步状语从句，because 引导缘由状语从句， 所以though不可以和并列连词but ，because 不可以和并列连词 so一块用。 只能单独用。
复习时应该注意的要素
（1）表示选择关系的连词，连接的双方只取其一。常用连词有or, either...or, otherwise
比如：
1）You can go to Beijing either today or tomorrow
2）You must get up early or you wont catch the early bus.
（2）表示转折关系，连接的双方构成对比，意义上有转折。常用连词有but, however, while, only
比如：
1） His brother is fond of football while he likes basketball.
2） You can watch TV, but you must finish your homework first.
（3）表示联合关系，联合的双方是对等的，意义上趋向一致。常用连词有：and, both...and, neither...nor, not only...but also, as well as, together with
比如：
1） To study English well, we need both diligence and careful.
2） That horse is not only the youngest among the five, but also runs the fastest.
（4）表示因果关系，连接的双方，互为因果，或者前因后果，或者前果后因。常见的连词有：for, so, therefore
比如：
1） It must have rained, for the ground is wet.
2） You are in the right, therefore they should support you.
实战演练
1、例题选讲
例1 he did not know much English，he got out his dictionary and looked up the word.
A． As B． For
C． Since D． Because
答案： A
提示： for，because和as虽皆可作连词用，表示由于，但使用方法有的不同。for引导的分句一直置于另一分句之后，常常对前一分句加以讲解，两个分句之间，一直用逗号分开。because引导是什么原因状语从句时，往往以why问句，语气比较重，传递的往往是他们未知道的新信息。as引导是什么原因状语从句时，往往是他们也知晓的信息。本句是他拿出词典查，显然，他知晓的英语单词不多，这是明摆着的事，所以用as最恰当。
例2 you dont feel well，youd better stay at home．
A． Because B． Since/If
C． For D． Now
答案： B
例3 I dont know he has received the package.
A． if B． when
C． what D． how many
答案： A
提示： if表示是不是，when不可以与目前完成时连用。
例4 Come tomorrow, I will give it to you.
A． or B． and
C． though D． if
答案： B
提示： and在此处讲解为那样，表示递进关系。
例5 The teacher his students likes football.
A． and B． as well as
C． and also D． also
答案： B
提示： as well as 连接两个主语用靠前原则。
例6 We were having lunch some one knocked at the door.
A． as B． a soon as
C． when D． while
答案： C
填入适合的连词。
1. My brother is ill, ________ I have to stay at home.
2. The film must be very interesting, ________ many people are buying tickets in line.
3. My computer is new, ________ it is too expensive.
4. She felt hungry, ________ she didnt have breakfast.
5. A customer came in, ________ I sTOPped my work.
6. He has a lot of money, ________ he spends little.
7. Come here early, ________ you cant see him.
8. Take some medicine, ________ you will feel better.
9. There are a lot of stories about the UFOs, _______ no one knows whether they are true or not.
10.Put on your coat, ________ you will catch cold.
11.She got a C in English test, ________ she had tried his best.
12.My little cousin can _________ read ________ write.
13.Please call me _______ you need my help.
14._____you have a few more days rest, youll feel better.
15._____ my father ______ my mother is a doctor. They are teachers.
16.I really dont know ______ it is going to rain or not this afternoon.
17.You may ______do it yourself ________ leave it to me.
18.Hurry up, ______ youll miss the next bus.
19.Li Ming was a brave boy, ______ he had one shortcoming.
20.Its a fine day, ____ we have a wonderful time.
21.I dont know _______ she can speak Russian or not.
22.We havent decided _____ and ______ we shall meet next time.
23.Thats ______ they didnt pass the exam.
24._______ you are right, _____ he is.
25.He ______ _____ read the book ______ _______ remembered what he read.
参考答案
1.so 2.for 3.besides 4.as 5.so 6.but 7.or 8.and 9.but 10.or
11.though 12.neither, nor 13.if/when 14.if 15.neither, nor 16.whether
17.either, or 18.or 19.though 20. 21.whether 22. 23.why
