中考英语while的用法.docx

中考英语while的用法
While用作名词时,意为“一段时间,一会儿”。例如:
I stayed there for a short while.(我在那里待了一小会儿。)
While 用作连词时有以下几种含义:
意为“当……的时候,和……同时”,引导时间状语从句。例如:
While I was watching TV, the bell rang.(我看电视时,铃响了。)
LiLi watched TV while she ate her supper.(边吃晚饭边看电视。)
注意eat为延续性动词,持续一段时间。
意为“虽然,尽管“,引导让步状语从句。例如:
While it was late,he went on working。(虽然很晚了,他还在继续工作。)
While he is in poor health,he works hard。(虽然他身体不好,但他还是努力工作。)
意为“而“, 表示两个并列句子的对比。
I like singing while she likes dancing.(我喜欢唱歌而她喜欢跳舞。)
You like sports, while I prefer music.(你喜欢体育,而我更喜欢音乐。)
While 引导状语从句时,应注意以下几点:
While引导的时间状语从句既可放在句首,也可放在句末;而while引导的让步状语从句一般放在句首,不放在句末。另外,也可以从意义上加以区分。例如:
While it was late,he went on working。(虽然很晚了,他还在继续工作。)
(while引导让步状语从句)
While he was tired,he would have a rest。(当他累了的时候,他会休息一会。)
(while引导时间状语从句)
While和when都可以引导时间状语从句,但应注意,while引导的时间状语从句中的谓语动词必须是延续性的动词。而when引导的状语从句中的谓语动词既可以使延续性动词也可以是非延续性动词。当时间状语从句中的谓语动词是延续性动词时,while和when可以互相替换。例如
While we were talking, the teacher came in. (当我们正在谈话时,老师进来了)
(talking是延续性的,所以能换成when)
The bus had left when we arrived at the bus stop。(我们到达车站时,公交车已经开走了)(arrive是非延续性动词,因此when不能替换成while)
When/while we were having a meeting, the teacher came in。(have