爱华网when有什么时候;当 ... 时等意思，那么你知道when的用法吗?下面跟着小编一起来学习一下，希望对大家的学习有所帮助!
when的用法大全：when的用法大全：when的基本意思是“什么时候”。可用作疑问副词,用来询问某事曾发生或将要发生的时间,引导特殊疑问句; 还可用作关系副词引导限制性定语从句、非限制性定语从句和表语从句,表示“是…时候的事”。
when的用法2：when可用作从属连词,引导状语从句,表示时间时作“当…时,在…的时候”解; 表示条件时作“如果,要是”解; 表示对比时作“既然,考虑到”解。当when所引导的从句的主语和主句的主语一致时,常将其主语、系动词或助动词省去,只留实义动词或表语,或者改写为短语。
when的用法3：when所引导的时间状语从句用一般现在时代替将来时,用现在完成时代替将来完成时。
when的用法4：when有时也可用作疑问代词或关系代词,作介词或动词的宾语。例如:We'll get there heaven knows when.天知道我们什么时候才能到达那里。Next summer,by when the house should be ready.到明年夏天房子就准备好了。
when的用法例句：1. The best thing to do when entering unknown territory is smile.
踏入未知地带最好的对策就是微笑。
2. When life gets hard and you want to give up, remember that life is full of ups and downs, and without the downs, the ups would mean nothing.
当生活很艰难，你想要放弃的时候，请记住，生活充满了起起落落，如果没有低谷，那站在高处也失去了意义。
3. Good luck is when an opportunity comes along and you're prepared for it.
好运就是当机会来临时，你早已做好了准备。
4. If you're lonely when you're alone, you're in bad company.--Jean Paul Sartre
如果你独处时感到寂寞，说明没有把自己陪好。
5. The turning point in the process of growing up is when you discover the core of strength within you that survives all hurt.
当你从内心深处找到一种可以忍受一切痛苦的坚强力量时，你的成长历程就会出现飞跃。
6. When the decision was read out Mrs Gardner thanked the judges.
判决书宣读完，加德纳夫人向法官们表示感谢。
7. He's still learning and when he hits his stride, he'll be unstoppable.
他仍旧处在学习阶段，一旦驾轻就熟后将势不可挡。
8. Try to support each other when one of you is feeling down.
当有人觉得情绪低落时，要努力相互打气。
9. It was just gone 7 o'clock this evening when I finished.
今晚我做完的时候刚过7点。
10. When the right woman comes along, this bad dream will be over.
当有合适的女人出现时，这种胡思乱想就会停止了。
11. When she had attempted to cut his nails he resisted.
她试图给他剪指甲，他不让。
12. When you are sitting, keep your elbow on the arm rest.
坐立时，把胳膊肘靠在扶手上。
13. It makes sense to eat a reasonably balanced diet when slimming.
在减肥过程中保持饮食的营养相对均衡是明智的。
14. She acted in her firstfilm when she was 13 years old.
13岁时她出演了她的电影处女作。
15. I hate it when people accuse us of that.
我讨厌别人就那件事指责我们。
