while的用法總結大全
大家在英語學習的時候經(jīng)常會對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,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”,表前后意義上的對比或轉折。
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引導狀語從句,有以下兩種含義:
1.表示某個動作正在進行的同時,另一動作也在進行之中,這時主從句都用進行時態(tài),有對同類的兩個動作進行對比的意味.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.吉姆正在摘蘋果,凱特正在把蘋果搬到卡車上去.
2.表示某個動作正在進行時,又發(fā)生了另一動作(該動作用一般過去時).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,看見一條魚躍出了水面.
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,就會有生命.
2.而;然而〔表示對比〕
He is a driver while I'm a teacher.他是司機,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.雖然我能理解你說的話,但是我不能同意你.
4.用作名詞,表示“一會兒或一段時間”,常與a,the或this等連用.如:
Just wait a while and then I will help you.等一下,我會來幫你的.
Where have you been all this while?這一陣子你一直都在哪兒?
while用法4
while所引導的時間狀語從句中的謂語動詞只能是延續(xù)性動詞。
例如:I met with an old friend of mine while(when) I was walking along the street.
while用法5
while 引導狀語從句時,應注意以下幾點:
1.while 引導的時間狀語從句既可放在句首,也可放在句末;而 while 引導的讓步狀語從句一般放在句首,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 引導讓步狀語從句)While he was tired, he would have a rest.(他累了就休息一會兒.)(while 引導時間狀語從句)
2. while 引導讓步狀語從句時,如果從句的主語和主句的主語相同,那么從句的主語和謂語動詞 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 都可以引導時間狀語從句,但應注意: while 引導的時間狀語從句中的謂語動詞必須是延續(xù)性的動詞;而 when 引導的時間狀語從句中的謂語動詞既可以是延續(xù)性動詞,也可以是非延續(xù)性動詞.當時間狀語從句中的謂語動詞是延續(xù)性動詞時, 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,老師進來了.)
The bus had left when we arrived at the bus stop.(當我們到達車站時,公共汽車已經(jīng)開走了.)(arrive 是非延續(xù)性動詞,因此,此句中的 when 不能用 while 替換.)When / While we were having a meeting, our teacher came in.(我們正在開會時,老師走了進來.)(have 是延續(xù)性動詞,因此,句中的 when 可以用 while 替換.)
4. while 引導的狀語從句還可以表示“某個動作正在進行的同時,另一個動作也在進行之中”.
例如:While the teacher was speaking, the students were listening.(老師講課時,學生們在聽.)
when, while, as都可作"當……的時候"解,但它們之間也有差別。
1. 若主句表示的是一個短暫性動作,從句表示的是一個持續(xù)性動作,三者都可用。
He fell asleep when/while/as he was reading. 他看書時睡著了。
2. when只表示一般的時間關系,它既可指時間的一點,也可指一段時間。用when時,從句的動作可與主句的動作同時發(fā)生,也可先于主句的動作,因此when用得最多。如:
He was playing basketball when I saw him. 當我看見他的時候,他正在打籃球。
Don't forget to return this book for me, when you go to the library. 你去圖書館時,不要忘記替我還這本書。
3. while只能指一段時間,而不能指時間的一點。用while時,從句的動作或者與主句的動作同時發(fā)生,或者主句的動作是在從句的動作的進展過程中發(fā)生的。因此,從句中的謂語必須是表示延續(xù)性動作或狀態(tài)的動詞。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)性的動詞)我們到達北京時,天正在下雨。
Please do not trouble me while I am writing my homework. 我寫作業(yè)時請不要打擾我。
4. 在用when和while連接的從句中,常省略與主句相同的主語和相應的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.他在閱讀語法書的時候睡著了。
While in London,he studied music.他在倫敦的時候,研究音樂。
5. when 可用作并列連詞,表示“這時(突然)”;while 也可以用作并列連詞,表示“而”、“卻”(表示對比);但 as 則沒有類似用法:
We were about to start when it began to rain. 我們正要出發(fā),這時天開始下雨了。
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發(fā)生,但可能潛伏著大災難。
2、While her observations may be true about some men, they could hardly apply to the entire gender.
雖然她的評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習詞典》
3、It will take a while for the drug to work out of your system.
這藥得需要一段時間才能排出你的體外。
4、I'll be back in a little while.
我一會兒就回來。
5、You'll water the plants while I'm away, won't you?
我外出的時候請你給花草澆澆水,行不行?
6、Her parents died while she was still at school.
她還在讀書時父母就去世了。
7、He'll do the job if you make it worth his while.
你要是給他的報酬豐厚,他會做這份工作的。
8、Give me your hand while we cross the road.
過馬路時拉著我的手。
9、We spent a good while looking for the house.
我們花了好長時間找這房子。
10、I'll keep you company while you're waiting.
你等待時我會陪伴你。
while的用法總結大全相關文章:
★ 英語語法大全總結