★Could you look after her for me while we’re away?

Could you look after her for me while we’re away.你能不能在我们不在的时候照看她？

while 表示“当…的时候”，与while 同义的词还有when,as,as soon as.其中when 表示“当…的时候”，句中的动作时间可以是一时间点，as 表示“…一边…一边”，as soon as 表示“一…就…”。例如：

I feel happy while I live here these days.

这些日子我住这儿感到很愉快。

The students are reading when the teacher came in?

老师进来时，学生正在读书。

They work as they sing.

他们一边唱歌一边工作。

Tell him about it as soon as he comes back.

他一回来就告诉他。

★They and the children were filling their bags with clothes and other things.

They and the children were filling their bags with clothes and other things.他们和孩子们正在往行李箱内装衣服和其它东西。

Fill 是动词，表示“装满…”，fill…with…表示“用…装”，它的同义词是full，full 是形容词，表示“满的”，be full of 表示“充满着…”。例如：

How can I fill all these books into one bag?

我怎么能把这些书放入一个包里？

Our classroom is full of flowers.

我们的教室充满了鲜花。

★Make sure you’ve got the air tickets.

Make sure you’ve got the air tickets.检查一下你们是否拿好了票。

Make sure 表示“弄清楚”，“查明”，后接宾语从句或of 短语。be sure 则表示“一定要”，“不要忘记”，“肯定”。例如：

Make sure if he is in the classroom.

检查一下他是否在教室。

Be sure to tell me about it as soon as you know it.

只要你知道了，一定要告诉我。

I am sure he can catch the bus.

我敢肯定他能赶上公共汽车。