whenadv.什么时候;当 ... 时conj.然后;可是;当 ... 时pron.什么时候n.时间
when in crisis在关键时刻
When he come in他进来时
When it comes to当涉及到; 当谈到
When do you dine你们什么时候吃饭?
When you talk.当你说话之际,
When to use?n.[鱼]大口突鳃太阳鱼
When I get there当我到达那里时
When Directed by遵照…执行
when all is saidadv.结果
When You Are Old当你老了