高中英语问题,谢谢!!!

因为when意思为当……时候或等于就在那个时候
而while虽然也翻译成当……时候，但它有对比作用，
比如：while I was doing my homework ,my bother was playing
the computer games(有两者的对比）

1）as, when 引导短暂性动作的动词。
Just as / Just when / When I stopped my car, a man came up to me.
2）当从句的动作发生于主句动作之前，只能用when 引导这个从句，不可用as 或 while。
When you have finished your work, you may have a rest.
3）从句表示"随时间推移"连词能用as，不用when 或while。
As the day went on, the weather got worse.
日子一天天过去，天气越变越坏。

我觉得用while合适，表示转折关联

上楼说的不对
when在这里是 既然 的意思!!!!
这道题我做过！！

when
KK: []
DJ: []
conj.
1. 当...时
John got engaged to her when travelling last winter.
去年冬天旅行时,约翰与她订了婚。
Don't get excited when you talk.
你说话时别激动。
2. 既然,考虑到
How can he get the promotion when his boss dislikes him?
既然上司不喜欢他,那他怎么会获得提升呢?
3. 虽然,然而
I had only fifteen dollars on me when the book I wanted cost twenty.
我身上只带了十五元钱,可是我想买的那本书定价二十