it was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash这里的,before是啥意思啊
问题描述：
it was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash
这里的,before是啥意思啊
答
before引导时间状语从句，It was not long before......译为：没过多久，就.......
没过多久，一架直升飞机就到了现场挽救在飞机坠毁事故中的幸存者。
答
before是与之前的not long在一起组成的词组不久前，不久之前
答
long before 很久之前
希望能够帮到楼主
答
before是“在什么之前”的意思
"not long before"是一个词组，是“不久前”的意思