while 的用法#优选、

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优质解答

一、while 用作名词时,意为“一段时间,一会儿”.例如:

I stayed there for a short while.

(我在那儿呆了一小会儿.)

The postman came a short while ago.

(邮递员刚刚来过.)

二、while 用作连词时,有以下几种含义:

1. 意为“当……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.)

Meimei watched TV while she ate her supper.

(梅梅边吃晚饭边看电视.)

2. 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,但他还在继续工作.)

While he is in poor health, he works hard.

(虽然他身体不好,但他还是努力工作.)

3. 连接两个并列句子,表示“对比”关系.例如:

He went out for a walk, while I stayed at home.

(他出去散步了,而我却呆在家里.)

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.)

三、while 引导状语从句时,应注意以下几点:

1. 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 he was tired, he went on working.

(虽然他累了,但他还是继续工作.)

(while 引导让步状语从句)

While he was tired, he would have a rest.

(他累了就休息一会儿.)

(while 引导时间状语从句)

2. while 引导让步状语从句时,如果从句的主语和主句的主语相同,那么从句的主语和谓语动词be 都可以省略.例如:

While he was ill, he went there. (= While ill, he went there.)

(虽然他有病,但他还是去那里了.)

3. 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 引导的时间状语从句中的谓语动词既可以是延续性动词,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.

(我们正在谈话时,老师进来了.)

The bus had left when we arrived at the bus stop.

(当我们到达车站时,公共汽车已经开走了.)

(arrive 是非延续性动词,因此,此句中的when 不能用while 替换.)

When / While we were having a meeting, our teacher came in.

(我们正在开会时,老师走了进来.)

(have 是延续性动词,因此,句中的when 可以用while 替换.)

4. while 引导的状语从句还可以表示“某个动作正在进行的同时,另一个动作也在进行之中”.例如:

While the teacher was speaking, the students were listening.

(老师讲课时,学生们在听.)

While he was writing, I was reading

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