When did you start working?

你什么时候开始工作的？

youdao

When did you start working?

你是什么时候开始工作的？

youdao

When did you start working in this factory?

你什么时候开始在工厂工作？

youdao

When did you start work? How long have you been working?

你什么时候开始工作过？你工作了多久了？

youdao

When did you start work? How long have you been working?

你什么时候开始工作过？你工作了多久了？

youdao