when

中文意思

• conj. 当……时
• adv. 什么时候
• pron. 什么时候
• n. 时间

英文释义

• adv. At what time; -- used interrogatively.
• adv. At what time; at, during, or after the time that; at or
• just after, the moment that; -- used relatively.
• adv. While; whereas; although; -- used in the manner of a
• conjunction to introduce a dependent adverbial sentence or clause,
• having a causal, conditional, or adversative relation to the principal
• proposition; as, he chose to turn highwayman when he might have
• continued an honest man; he removed the tree when it was the best in
• the grounds.
• adv. Which time; then; -- used elliptically as a noun.

例句

1. conj. 当……时

   Please turn off the lights when you leave the conference room.

   离开会议室时请把灯关掉。

2. adv. 什么时候

   When will the manager return from his business trip?

   经理什么时候出差回来？

3. pron. 什么时候

   Until when can we keep these library books?

   这些图书馆借的书我们可以用到什么时候？

4. n. 时间

   We have agreed on the location for the project launch, but the when is still undecided.

   我们已经确定了项目启动会的地点，但具体时间尚未决定。