Question

I haven't seen you for ages和It has been awhile的区别？

Answer 1

1.I haven't seen you for ages，意思是慢慢长路，我许久未见你，宛如几个世纪。时间很长。It has been awhile，意思是只是片刻之间。两者明显时间长度不同。一个很长，一个很短。
2.age 英[eɪdʒ]
美[eɪdʒ]
n.年龄; 年龄段; (历史上的)时代，时期;
v.变老; 使显老; 使变老; 使苍老; (使)成熟，变陈;
[例句]The children are close to each other in age.
这些儿童彼此的年龄很接近。
[其他] 第三人称单数：ages 复数：ages 现在分词：aging 过去式：aged 过去分词：aged
例句1
Our cars get blocked in and we can't leave for ages.
我们的车被堵在里面，要等很久才能走。
例句2
Women were burned as witches in the middle ages.
妇女在中世纪时被当成女巫烧死。
例句3
The idea has been around for ages without catching on.
这个观点已经提出来有年头了，可是一直没被广泛接受。
3.awhile 英[əˈwaɪl]
美[əˈwaɪl]
adv. 片刻; 一会儿;
[例句]He fought with the urge to smoke one of the cigars he'd given up awhile ago
他努力克制自己的烟瘾，不去抽一支戒掉没多久的雪茄。