before long是不久以后,等于soon；long before是很早以前,等于long long ago
long after很久以后 soon after 不久之后,稍后,after是连词,后面跟一个句子.
before long
是“很快,不久”的意思,可以用于各种时态.是词组表示时间,单独用.
例如:
1).I'll see the film before long 我不久就要看这部电影.
2)."Before long,the noise dropped completely and the boat began to drift gently across the water."
"不久,轰鸣声完全消失了,于是这只船开始慢悠悠地漂浮在水面上." before long是不久以后,等于soon；long before是很早以前,等于long long ago
long after很久以后 soon after 不久之后,稍后,after是连词,后面跟一个句子.
before long
是“很快,不久”的意思,可以用于各种时态.是词组表示时间,单独用.
例如:
1).I'll see the film before long 我不久就要看这部电影.
2)."Before long,the noise dropped completely and the boat began to drift gently across the water."
"不久,轰鸣声完全消失了,于是这只船开始慢悠悠地漂浮在水面上."