while的时态用法归纳

　　While her observations may be true about some men, they could hardly apply to the entire gender.

　　虽然她的评论就某些男人而言可能是正确的，但绝不适用于所有男性。

　　It will take a while for the drug to work out of your system.

　　这药得需要一段时间才能排出你的体外。

　　I'll be back in a little while.

　　我一会儿就回来。

　　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。