什么是从属连词

什么是从属连词

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什么是从属连词

从属连词是连词的一种,用来引导名词性从句或状语从句。连词通常引导一个从句,修饰主句。 由从属连词所引导的句子叫从句,而含有从句的句子叫作复合句

·从属连词可分为三大类:

1、that (无词义,不做成分)

if,whether (表达是否的意义,但不做句子成分)

2、连接代词:who,whom,whose,what,which,whatever, whoever, whichever(有词义,在句子中可作主语、表语、宾语)

3、连接副词:when,where,why,how,how many,how long,how far,however,whenever,wherever (有词义,作从句的状语)

用法:

从结构上说,英语连接词分两大类:并列连词和从属连词。

并列连词连接两个或两个以上地位平等的字、词组或分句。

例如:

(1) Air and water are indispensable to me.   

(2) She likes going out with friends or playing outdoor games.   

(3) Most workers have a good income, so they look very happy.   

从属连词连接两个或两个以上的分句,形成复杂句中的从属分句。

例如:   

(4) He said that he did not want to go .   

(5) Many things have happened since I last saw him.   

(6) You may come if you want to.   

从属连词用来连接各种从句。

如动词是持续行动词,它要用肯定句,如:

I studied hard until 12 o'clock last night.

如果动词是瞬间截止性动词,则要用否定句,

如:

He didn't go to bed until his mother came back.

由since,for,by,before, 来引导的时间状语从句。

since 引导的时间状语是动作的开始时间,

如:

I have studied English since 1990.

而by引导的时间状语通常是动作的结束时间,

如:

I had learned 25 English songs by the end of last term.

·

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