not until 和 until的区别

问题描述:

not until 和 until的区别

not until 是在...之前 用于非延续性动词如:He didn't come back until 9 o'clock.not until:可放句首,但主句要用倒装. Not until midnight did he came back home.until是"直到...才...可用于延续性动词...