从属连词用法

投稿:xuelala作者: [我的文集]来源: 时间:2018-09-12 15:50:09 阅读:8

从属连词用法:

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。

until(till)直到,在用until表达时间状语的句子中,主句中的动词是要十分小心去选择的。

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