while 的用法是什么啊
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发布时间：2022-04-21 14:44
共3个回答
热心网友
时间：2023-07-16 20:26
（1）I”ll be back for a while
（2）He fell asleep while doing homework.
（3）John was dressed in brown while Mary was dressed in blue
连词while大致有以下四种用法:
1.引导时间状语从句,意为"当……的时候;和……同时",此时的主从句谓语动作同时发生,从句谓语通常是延续性动词。如:
Mary watched TV while she ate her supper.玛丽边吃饭边看电视。
While she was listening to the radio, she fell asleep.她听着收音机睡着了。
while引导从句时,如主从句的主语一致,且从句谓语又含有be,则从句主语和be可省略。while后可直接跟现在分词、名词、形容词或介词短语。如:
We are teachers while (we are) serving as students.我们边当老师边当学生。
While (he was) yet a youth, he gained many prizes.他年轻时就曾多次获奖。
He caught a cold while(he was) on vacation.他度假时患了感冒。
2.表示对比或转折,意为"而;然而"。此时,while一般位于句中。如:
Some people waste food while others haven't enough.有些人浪费粮食,然而有些人却吃不饱。
You like sports, while I prefer music.你喜欢体育,而我更喜欢音乐。
3.表示让步,通常位于句首,意为"尽管;虽然"。如:
While I agree with your reasons, I can't allow it.尽管我同意你的理由,但我不能允许这样做。
While he loves his students, he is very strict with them.虽然他爱他的学生,可是他对学生们很严格。
While (he was) respected, he is not liked.他虽受人尊敬,但并不被人喜欢。
4.表示条件,意为"只要",其意思和用法相当于as long as。while可位于句首,也可位于句中。如:
You don't have to worry while we are here.只要我们在,你就别着急。
There will be life while there is water and air.只要有空气和水,就有生命。
While there is life, there is hope.留得生命在,不怕没希望。
5.意为"同时;也"。如:
While the book is welcomed by schol-
ars, it will make an immediate appeal to the general readers.这本书受到学者的欢迎,同时也会引起一般读者的兴趣。
6.意为"趁着"。如:
Make hay while the sun shines.晒草要趁阳光好。(谚)
Strike while the iron is hot.趁热打铁。(谚)
While the roses are yet in bloom, will you come with me to see them?趁着玫瑰花还开着,你和我一道去看看好吗
参考资料：http://www.5151abc.com/2005/Article/ShowArticle.asp?ArticleID=183
热心网友
时间：2023-07-16 20:26
n.&a. 一会儿
vt.&v. 消磨
我在某地见过他
I met him while I was in。。。。
不久前他还在这
He was here a little while ago
热心网友
时间：2023-07-16 20:27
一、while作名词用，表示“一会儿”“一段时间”。
1.She likes to lie down for a while after lunch. 她喜欢午饭后躺一会儿。
2.Coming to another country to study requires a big adjustment and it takes a while to fit in. 来到另一个国家求学，需要花一段时间来适应。
二、While作连词
(1)引导时间状语 。
1.We must strike while the iron is hot.趁热打铁。
2.While she was listening to the radio，she fell asleep. 她听着收音机睡着了。
(2)引起让步状语从句，意思是“虽然…但是….”、“尽管…但是…”(多放于句首)
1.While he loves his students，he is very strict with them.虽然他爱他的学生，可是他对他们很严格。
2.While these experiments are interesting and useful，it is important to remember that they may not always tell us much.(BookIIIp125) 虽然这些实验很有趣也有用，但是很重要的是要记住，这些实验也可能不会告诉你很多。
(3)引起条件状语，意思是“只要”。
1.While there is life there is hope.只要生命存在，就有希望。 2.While there is a way there is away.有志者事竟成。
三、While作并列连词用，意思为“而，然而”，表对比。而but表转折。注意用心比较体会while与but的句中用意 。
1.Some people waste food while others haven't enough. 有些人很费粮食，然而有些人却吃不饱。
2.The son was having a good meal at home，while the parents were working in the fields. 儿子在家吃好饭而父母却在田里辛勤劳作。
3.I ought to have helped her，but I never could. 我本该帮她但没能。
4.Honey is sweet，but the bee stings. 蜂蜜很甜，但蜜蜂有刺蜇人。
四.while，when，as的用法区别
都译为“当…的时候”，区别为：when后的从句谓语动词既可是延续性动词，也可是短暂性动词，而且还可作并列连词，译为“这时”。但以下句型一定用when，作并列连词：
句型A：be about to do…when…正要做…这时(发生另一事) 句型B：was/were doing…when…正在…这时(发生另一事) 句型C：had done…when…刚要做…这时(发生另一事)
1.We were about to set out when it began to rain. 我们刚要出发天突然下雨了。
2.He had hardly sat down when his mobile rang. 他刚一坐下手机就响了。
3.I was walking along the bank of the river when I fell into it. 我正沿河岸散步突然掉进水里。
while后的从句谓语动词只能是延续性动词，强调主从句的两个动词同时发生；while也可作并列连词，表示两个动作的对比，译为“而”“然而”。as则表示两个变化中的动作的同时性，译为“一边…一边…”。
1.While his mother was cooking in the kitchen，the boy fell asleep in the chair.
(在一个延续动作过程中发生另一个动作)
2.He hurried home，looking behind as he went. 他匆匆回家，边走边往后看。
