while的用法總結(jié)大全
大家在英語(yǔ)學(xué)習(xí)的時(shí)候經(jīng)常會(huì)對(duì)while的用法感到疑惑，那你知道while是怎么用的嗎？下面小編給大家做了while的用法總結(jié)，希望可以幫助到大家！
while用法1
While作為并列連詞,意思為“而,然而”,表前后意義上的對(duì)比或轉(zhuǎn)折。
例如：There’s plenty of rain in the southeast,while there's little in the northeast.東南部雨量充足,而西北部則很少下雨。
Some people waste food while others haven't enough.有些人浪費(fèi)糧食,然而有些人卻吃不飽。
while用法2
另外while還有別的用法，while引導(dǎo)狀語(yǔ)從句,有以下兩種含義：
1．表示某個(gè)動(dòng)作正在進(jìn)行的同時(shí),另一動(dòng)作也在進(jìn)行之中,這時(shí)主從句都用進(jìn)行時(shí)態(tài),有對(duì)同類(lèi)的兩個(gè)動(dòng)作進(jìn)行對(duì)比的意味.如：
While I was playing the piano,she was dancing．我在彈鋼琴,她在跳舞.
While Jim is picking apples,Kate is carrying apples to the truck．吉姆正在摘蘋(píng)果,凱特正在把蘋(píng)果搬到卡車(chē)上去.
2．表示某個(gè)動(dòng)作正在進(jìn)行時(shí),又發(fā)生了另一動(dòng)作（該動(dòng)作用一般過(guò)去時(shí)）.如：
While I was reading,I fell asleep．我讀著讀著就睡著了.
While we were swimming in the river,we saw a fish jump out of the water．我們正在河中游泳時(shí),看見(jiàn)一條魚(yú)躍出了水面.
while用法3
1．只要（＝as long as）
There will be life while there is water and air．只要有空氣和水,就會(huì)有生命.
2．而；然而〔表示對(duì)比〕
He is a driver while I'm a teacher．他是司機(jī),而我是老師.
3．雖然（＝although）；盡管〔表示讓步〕
While I see what you say,I can't agree with you．雖然我能理解你說(shuō)的話,但是我不能同意你.
4．用作名詞,表示“一會(huì)兒或一段時(shí)間”,常與a,the或this等連用.如：
Just wait a while and then I will help you.等一下,我會(huì)來(lái)幫你的.
Where have you been all this while?這一陣子你一直都在哪兒?
while用法4
while所引導(dǎo)的時(shí)間狀語(yǔ)從句中的謂語(yǔ)動(dòng)詞只能是延續(xù)性動(dòng)詞。
例如：I met with an old friend of mine while(when) I was walking along the street.
while用法5
while 引導(dǎo)狀語(yǔ)從句時(shí),應(yīng)注意以下幾點(diǎn):
1.while 引導(dǎo)的時(shí)間狀語(yǔ)從句既可放在句首,也可放在句末;而 while 引導(dǎo)的讓步狀語(yǔ)從句一般放在句首,不放在句末.另外,也可以從意義上加以區(qū)分.
例如:While he was tired, he went on working.(雖然他累了,但他還是繼續(xù)工作.)(while 引導(dǎo)讓步狀語(yǔ)從句)While he was tired, he would have a rest.(他累了就休息一會(huì)兒.)(while 引導(dǎo)時(shí)間狀語(yǔ)從句)
2. while 引導(dǎo)讓步狀語(yǔ)從句時(shí),如果從句的主語(yǔ)和主句的主語(yǔ)相同,那么從句的主語(yǔ)和謂語(yǔ)動(dòng)詞 be 都可以省略.
例如:While he was ill, he went there. (= While ill, he went there.)(雖然他有病,但他還是去那里了.)
3. while 和 when 都可以引導(dǎo)時(shí)間狀語(yǔ)從句,但應(yīng)注意: while 引導(dǎo)的時(shí)間狀語(yǔ)從句中的謂語(yǔ)動(dòng)詞必須是延續(xù)性的動(dòng)詞;而 when 引導(dǎo)的時(shí)間狀語(yǔ)從句中的謂語(yǔ)動(dòng)詞既可以是延續(xù)性動(dòng)詞,也可以是非延續(xù)性動(dòng)詞.當(dāng)時(shí)間狀語(yǔ)從句中的謂語(yǔ)動(dòng)詞是延續(xù)性動(dòng)詞時(shí), while 和 when 可以互相替換.
例如:While we were talking, the teacher came in.(我們正在談話時(shí),老師進(jìn)來(lái)了.)
The bus had left when we arrived at the bus stop.(當(dāng)我們到達(dá)車(chē)站時(shí),公共汽車(chē)已經(jīng)開(kāi)走了.)(arrive 是非延續(xù)性動(dòng)詞,因此,此句中的 when 不能用 while 替換.)When / While we were having a meeting, our teacher came in.(我們正在開(kāi)會(huì)時(shí),老師走了進(jìn)來(lái).)(have 是延續(xù)性動(dòng)詞,因此,句中的 when 可以用 while 替換.)
4. while 引導(dǎo)的狀語(yǔ)從句還可以表示“某個(gè)動(dòng)作正在進(jìn)行的同時(shí),另一個(gè)動(dòng)作也在進(jìn)行之中”.
例如:While the teacher was speaking, the students were listening.(老師講課時(shí),學(xué)生們?cè)诼?tīng).)
when, while, as都可作"當(dāng)……的時(shí)候"解，但它們之間也有差別。
1. 若主句表示的是一個(gè)短暫性動(dòng)作，從句表示的是一個(gè)持續(xù)性動(dòng)作，三者都可用。
He fell asleep when/while/as he was reading. 他看書(shū)時(shí)睡著了。
2. when只表示一般的時(shí)間關(guān)系，它既可指時(shí)間的一點(diǎn)，也可指一段時(shí)間。用when時(shí)，從句的動(dòng)作可與主句的動(dòng)作同時(shí)發(fā)生，也可先于主句的動(dòng)作，因此when用得最多。如：
He was playing basketball when I saw him. 當(dāng)我看見(jiàn)他的時(shí)候，他正在打籃球。
Don't forget to return this book for me, when you go to the library. 你去圖書(shū)館時(shí)，不要忘記替我還這本書(shū)。
3. while只能指一段時(shí)間，而不能指時(shí)間的一點(diǎn)。用while時(shí)，從句的動(dòng)作或者與主句的動(dòng)作同時(shí)發(fā)生，或者主句的動(dòng)作是在從句的動(dòng)作的進(jìn)展過(guò)程中發(fā)生的。因此，從句中的謂語(yǔ)必須是表示延續(xù)性動(dòng)作或狀態(tài)的動(dòng)詞。這是while與when的主要差別。
如：
When we arrived in Beijing, it was raining. (arrive不是延續(xù)性的動(dòng)詞)我們到達(dá)北京時(shí)，天正在下雨。
Please do not trouble me while I am writing my homework. 我寫(xiě)作業(yè)時(shí)請(qǐng)不要打擾我。
4. 在用when和while連接的從句中，常省略與主句相同的主語(yǔ)和相應(yīng)的be，而在as連接的從句中一般則不省略。
如：
He fell asleep while(he was)studying his grammar book.他在閱讀語(yǔ)法書(shū)的時(shí)候睡著了。
While in London,he studied music.他在倫敦的時(shí)候，研究音樂(lè)。
5. when 可用作并列連詞，表示“這時(shí)(突然)”；while 也可以用作并列連詞，表示“而”、“卻”(表示對(duì)比)；但 as 則沒(méi)有類(lèi)似用法：
We were about to start when it began to rain. 我們正要出發(fā)，這時(shí)天開(kāi)始下雨了。
He likes coffee, while she likes tea. 他喜歡咖啡，而她卻喜歡茶。
1、The effects of global warming, while not immediate, are potentially catastrophic.
全球氣溫上升的后果雖然并非即時(shí)發(fā)生，但可能潛伏著大災(zāi)難。
2、While her observations may be true about some men, they could hardly apply to the entire gender.
雖然她的評(píng)論就某些男人而言可能是正確的，但絕不適用于所有男性。
《柯林斯高階英漢雙解學(xué)習(xí)詞典》
3、It will take a while for the drug to work out of your system.
這藥得需要一段時(shí)間才能排出你的體外。
4、I'll be back in a little while.
我一會(huì)兒就回來(lái)。
5、You'll water the plants while I'm away, won't you?
我外出的時(shí)候請(qǐng)你給花草澆澆水，行不行？
6、Her parents died while she was still at school.
她還在讀書(shū)時(shí)父母就去世了。
7、He'll do the job if you make it worth his while.
你要是給他的報(bào)酬豐厚，他會(huì)做這份工作的。
8、Give me your hand while we cross the road.
過(guò)馬路時(shí)拉著我的手。
9、We spent a good while looking for the house.
我們花了好長(zhǎng)時(shí)間找這房子。
10、I'll keep you company while you're waiting.
你等待時(shí)我會(huì)陪伴你。
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