我们很长时间没见面了.
We are long time no see.
例：
1.我们很长时间没见面了.
We haven't seen each other for a very long time.
2.他们很长时间没见面了.
They haven't met each other for a long time.
3.他们有很长时间没见面了.
They haven't seen each other for a long while.
4.自那以后,我们很长一段时间没见面.
Well, l didn't see him for quite a while.
5. 很长时间没见到他了,上次见面他9岁?
I haven't seen him since he was 9?