While用法解析及其和when 与as区别 while是什么意思( 二 )
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.
(当我们达到车站时,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 调换.)
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 调换.)
while引诱的时光状语从句多用进行时态,而when引诱的时光状语从句多用一般时态. 例如:While they were talking ,the bell rang.正在他们谈话的时候,上课铃响了.
I was doing my homework when my mother came back home yesterday evening.昨天晚上妈妈回家的时候,我正在做家庭作
4. while 引诱的状语从句还可以表现“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
I filled the kettle while she was talking and plugged it in
她说话间,我把水壶灌满并插上了电源 。
主要习习用法:
while you're/I'm etc. at it
趁做某事的时候;顺便;顺带
I'm just going to buy some postcards.’ ‘Can you get me some stamps while you're at it?’
“我正想去买明信片 。”“你能顺便给我买些邮票吗?”
四、辨析when as while 【导航词义:当…时】
when conj. 在…时,当…时
〔辨析〕
所引诱的状语从句中,谓语可以是延续性动词,也可以是瞬时动词,其动作既可以和主句的动作同时产生,也可以在主句的动作之前或之后产生 。
〔例证〕
He got engaged to Lucy when travelling last autumn.
去年秋天旅行时,他与露西订了婚 。
It was raining when we arrived.
我们到的时候正在下雨 。
Turn off the switch when anything goes wrong with the device.
如果装置出故障,就把开关关掉 。
as conj. 当…时,(正当)…的时候
〔辨析〕
引诱状语从句时,着重指从句中的动作与主句中的动作同时产生或同时进行,一般连续时光不长,其谓语可以是延续性动词,也可以是瞬时动词 。
〔例证〕
She was coming in as he was going out.
她进来的时候,他正要出去 。
I caught a whiff of perfume as she swept past me.
她从我身边走过时,我闻到一股香水味 。
Joe jumped onto the bus just as it was pulling away.
正当公共汽车开动时,乔跳上了车 。
while conj. 当…时,在…期间
〔辨析〕
指在某事产生之际或产生的进程中,另一事又产生 。所引诱的状语从句中,谓语应为延续性动词,而不用瞬时动词,强调其动作与主句中的动作同时产生,但连续时光一般较长;有时也可指主句的动作在从句的动作进程中产生 。
〔例证〕
Don't interrupt him while he is thinking.
他在思考时别去打搅他 。
She got married while working as a waitress.
她在饭店当服务生期间结婚了 。
Pat killed time by watching TV while waiting for her.
帕特在等她时边看电视边打发时光 。
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