同学你好，该知识点来自沪江网校《BEC商务英语初、中、高级连读【爆款特惠签约班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好
while在做连词的时候，不仅只有但是的意思，表示转折哦
1. 在…期间；当…的时候
during the time that sth is happening
同义词： when
We must have been burgled while we were asleep.
我们睡着时一定让贼入室偷了。
Her parents died while she was still at school.
她还在读书时父母就去世了。
While I was waiting at the bus stop, three buses went by in the opposite direction.
我在公共汽车站等车时，对向驶过了三辆公共汽车。
2
与…同时
at the same time as sth else is happening
You can go swimming while I'm having lunch.
我吃午饭时你可以去游泳。
shoes mended while you wait
在你等候的时候修的鞋
祝学习愉快！