You'll water the plants while I'm away, won't you?
我外出的时候请你给花草浇浇水，行不行？
Her parents died while she was still at school.
她还在读书时父母就去世了。
He'll do the job if you make it worth his while.
你要是给他的报酬丰厚，他会做这份工作的。
Give me your hand while we cross the road.
过马路时拉着我的手。
We spent a good while looking for the house.
我们花了好长时间找这房子。