While walking to school, I saw a rainbow.
在去上学的路上，我看到了一道彩虹。
She listened to music while doing her homework.
她一边做作业一边听音乐。
While cooking dinner, he burned the sauce.
他在做晚饭的时候把酱汁烧糊了。
They talked about their plans while waiting for the bus.
他们在等公交车时讨论了他们的计划。
While reading the book, I fell asleep.
我在看书的时候睡着了。
He checked his emails while having breakfast.
他一边吃早餐一边查看邮件。
While driving, please don’t use your phone.
开车时请不要使用手机。
She smiled while thinking about her childhood.
她想起童年时不禁微笑。