If something happens while something else is happening, the two things are happening at the same time.
They were grinning and watching while one man laughed and poured beer over the head of another.
当一个男人大笑着把啤酒倒在另一个男人头上时,他们都乐呵呵地看着。
I sat on the chair to unwrap the package while he stood behind me.
我坐在椅子上打开包裹时他就站在我身后。
If something happens while something else happens, the first thing happens at some point during the time that the second thing is happening.
The two ministers have yet to meet, but may do so while in New York.
两位部长还未会面,但可能会在纽约见面。
You use while at the beginning of a clause to introduce information that contrasts with information in the main clause.
Most digital camera owners are male, while women prefer film.
大多数数码相机的使用者都是男性,而女性则偏爱用胶卷。
The first two services are free, while the third costs £35.00.
前两项服务免费,而第三项服务的价格为35英镑。
While chronic anger increases the risk of heart disease in men, for women it is anxiety that poses this risk.
经常生气会增加男性患心脏病的风险,而引起女性的风险的是焦虑。
You use while before making a statement, in order to introduce information that partly conflicts with your statement.
While the news, so far, has been good, there may be days ahead when it is bad.
虽然到目前为止都是好消息,但是可能过几天就有坏消息了。
While the numbers of such developments are relatively small, the potential market is large.
虽然开发数量相对较小,但市场潜力却很大。
While details may vary, the essence remains the same.
细节也许各异,但是本质相同。
A while is a period of time.
They walked on in silence for a while.
他们默默地走了一会儿。
He was married a little while ago.
他前不久刚结了婚。
whiles , whiling , whiled
while away
If you while away the time in a particular way, you spend time in that way, because you are waiting for something else to happen, or because you have nothing else to do.
Craig had been whiling away his spare time in our basement.
克雷格一直在我们的地下室里消磨他的空闲时间。
all the while
You use all the while in order to say that something happens continually or that it happens throughout the time when something else is happening.
All the while the people at the next table watched me eat.
邻桌的人一直在看我吃东西。