初中英语知识点之—连词
连词是一种虚词， 在句中一般不重读，也不能独立担任句子成分而只起连接作用，但大多数连词有实际意义。
一、并列连词
1、表并列关系的连词
1)both … and ..译为 : 和。都）
连接两个并列主语时，谓语动词用复数形式。
my father and my mother work( 前面有 both...and...用 work) in that factory.
2)not only ..but (also) .译为 : 不但。而且。
连接两个并列主语时，谓语动词遵循“就近一致”原则。 only you, but also he wants(前面是 he 用 wants) to go hiking.
3)neither ..nor ..译为 : 既不。也不。
连接两个并列主语时，谓语动词通常遵循“就近一致”原则。 i nor he has(前面是 he 用 has) seen the film. 4)as well as (译为 : 也）
连接两个并列主语时，谓语动词和前面的那个主语在人称和数上保持一致。 (as well as he) am ready to help you.
5) and (译为 : 和）
连接两个并列主语时，谓语动词用复数形式。 and lily are singing.
2、表转折关系的连词：but（..but...
yet（否定用）、whereas、 while 等。 likes math while his younger sister likes chinese. =jim likes math.
however, his younger sister likes chinese.
3、表选择关系的连词：or(或者)、either...or...
要么。要么。或者。
或者。not...but...
不是。而是。等。
you often go to school by bus or by bike? you or i am right.(谓语动词-就近原则)
4、表因果关系的连词：for、so 等。 isn't at school,for he has a bad cold today.
二、从属连词
1、引导时间状语从句的连词：when、while、as、as soon as、after、 before、untill/till 等。 soon as he arrives,i will call you.
didn't go to bed until my mother came back.
2、引导原因状语从句的连词：because、as、since 等。
was late for this meeting because i missed the bus. he was not comfortable, i decided to take care of him. 3、引导目的状语从句的连词：
so that、in order that 等。
lock the door so that/in order that i could study hard.
4、引导结果状语从句的连词：so...that...
such...that...等。
is such a clear boy that we all like him.
5、引导条件状语从句的连词：although、though、even if、even though 等。
if you were here,you couldn't help him.(虚拟语气) he is old, he is still very strong.
6、引导名词性语从句的连词：if、unless、as/so long as、that、if、 whether 等。 't come unless i call you.
you go to the party,you will h**e a good time. you tell me if/whether he will come tomorrow? didn't know that you would come.
拓展部分（可选看）
1.表递进
2.表转折
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