You'll water the plants while I'm away, won't you?

　　我外出的時(shí)候請你給花草澆澆水，行不行？

　　Her parents died while she was still at school.

　　她還在讀書時(shí)父母就去世了。

　　He'll do the job if you make it worth his while.

　　你要是給他的報(bào)酬豐厚，他會(huì)做這份工作的。

　　Give me your hand while we cross the road.

　　過馬路時(shí)拉著我的手。

　　We spent a good while looking for the house.

　　我們花了好長時(shí)間找這房子。