為了讓各位同學(xué)更好的區(qū)別when和while，小編整理了以下內(nèi)容。

when既指時(shí)間點(diǎn),也可指一段時(shí)間，while只指一段時(shí)間。

when從句的動(dòng)作和主句的動(dòng)作既可以同時(shí)也可以先后發(fā)生，while從句的動(dòng)作和主句的動(dòng)作必須同時(shí)發(fā)生。

when引導(dǎo)的時(shí)間狀語從句為一般過去時(shí)，while引導(dǎo)的時(shí)間狀語從句為過去進(jìn)行時(shí)。

When are you going home?

你什么時(shí)候回家?

When eating a whole cooked fish, you should never turn it over to get at the flesh on the other side.

吃一整條魚時(shí)，切忌把它翻過來去吃另一面的肉。

When I met the Gills, I had been gardening for nearly ten years.

遇到吉爾一家時(shí)我已經(jīng)做了近10年的園藝工作。

When he brought Imelda her drink she gave him a genuine, sweet smile of thanks.

當(dāng)他把飲料拿給艾梅爾達(dá)時(shí)，她真誠而甜美地向他微笑以示感謝。

I asked him when he'd be back to pick me up.

我問他什么時(shí)候回來接我。

They were grinning and watching while one man laughed and poured beer over the head of another.

當(dāng)一個(gè)男人大笑著把啤酒倒在另一個(gè)人頭上時(shí)，他們都在樂呵呵地看著。

The two ministers have yet to meet, but may do so while in New York.

兩位部長尚未會(huì)面，但可能會(huì)在紐約碰頭。

Marianne was tempted to turn the large rooms into traditional French-style salons, while Howard was in favour of a typically English look.

瑪麗安娜想把這些大房間弄成傳統(tǒng)法式客廳的樣子，但是霍華德喜歡典型的英式風(fēng)格。

While the numbers of such developments are relatively small, the potential market is large.

盡管這種增長的數(shù)量相對較小，但是潛在的市場是巨大的。

They walked on in silence for a while.

他們繼續(xù)默默無語地走了一會(huì)兒。