点拨during与for的用法区别

during 通常表示事件发生在何时(when)，而 for 则表示事件持续了多长时间 (how long)。在“数词＋时间名词”之前以及在 some time, a long time 之类表示泛指一段时间的词组之前，可用介词 for，但不用 during。

During the birth she was given gas and air.

她分娩时用了麻醉混合气体。

I use the Internet at work, during my lunch hour.

我上班时在午餐时间使用互联网。

Tourism is a major source of income for the area.

旅游业是这个地区的\'主要收入来源。

Day care is provided by the company she works for.

她工作的那家公司有日托。