Can you tell me when set off?求怎样改错并解释!
问题描述：
Can you tell me when set off?
求怎样改错并解释!
答
when，what等加to作主语表语宾语等
答
when to set off········to set off 作状语，以TO引导····
答
Can you tell me when【 to set 】 off?
或：Can you tell me when【we will 】 set off?
when to do 结构,或：when 后跟宾语从句- 主语+ 谓语...
不明白的再问哟,请及时采纳,多谢!