logn before与before long用法有什么区别
主要是用法上的，谢谢各位高手了
参考答案:long before时间状语或连词“很久以前，在……很久了”
e.g I haven't received your letter long before. 我很久都没收到你的来信了。
It won't be long before we meet again. 我们很快又可以再次见面了。
before long时间状语，相当于soon
e.g He will come to see us before long.