一、考查表示时间的用法，其意为“当……的时候”。

如：We must strike while the iron is hot.

我们要趁热打铁。

Stand still while I take your photograph.

我给你拍照时站着不要动。

Have we got enough books to read while we are on holiday?

假期里我们有足够的书看吗?

Were there any calls for me while I was out?

我出去的时候，有人来过电话吗?

She hates anyone listening while she is telephoning.

她打电话时不愿让任何人听。

二、考查表示让步的用法，其意为“尽管”“虽然”。

如：

While the work was difficult, it was interesting.

虽然工作有难度，但很有趣。

While I understand what you say, I can’t agree with you.

虽然我理解你的意思，但我还是不同意。

While the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.

虽然因特网很有帮助，但我还是认为在其上花太多的时间不是个好主意。

While we don’t agree we continue to be friends.

尽管我们意见不同，我们还是朋友。

While I did well in class, I was a poor performer at games.

虽说我学习不错，我运动却不行。

While a few became richer, many did not.

虽然一些人变得更富有了，但多数人并非如此。

三、考查表示对比的用法，其意为“而”“但”。

如：

In some places women are expected to earn money while men work at home and raise their children.

有些地方妇女挣钱，而男子则在家里持家和带孩子。

Air is a fluid but not a liquid, while water is both a fluid and a liquid.

空气是流体不是液体，水是流体也是液体。

Some people waste food while others haven’t enough.

一些人糟踏食物而另一些人却食不果腹。

I went swimming while the others played tennis.

我去游泳，而其余的人则去打网球了。

Prices are rising sharply, while incomes are lagging far behind.

物价飞涨而收入却远远落后。

四、考查其省略用法，即主句与从句主语相同，且从句谓语动词含有动词be时，通常可省略从句主语和动词be。

如：

While (he was) in prison, she wrote her first novel.

她在狱中写出了第一部小说。

He had strayed from home while still a boy.

他小时候就离开家到处流浪了。