为什么你使用not before而不是after ?

母语人士的回答
Rebecca
Rachel 说不not before此之前的原因是为了补充她之前的评论, Right after you left, they wheeled her off to the delivery 。通过使用not before ,您表明这是她去产房之前发生的事情。 not before可以表示打算在开始之前完成某件事!例: After breakfast, you can go outside, but not before the dishes are washed. (吃完早饭,洗完碗就可以出去了。) 例子: She left the room crying, but not before she cursed the teacher out. (她骂完老师后哭着离开了房间。)