I want you to keep working if I don*t working ------I tell you to stop

问题描述:

I want you to keep working if I don*t working ------I tell you to stop
为什么添unless而不是until
三克油
爱老虎油

个人觉得填until容易引起歧义,if I don*t work until I tell you to stop.意思为直到我让你停下来,我才工作.
unless相当于if .not,