what does yet mean...?
Haven't met you ''yet'' !
can I just only write ''I haven't met you'' , no yet?
haven't 和 yet不都是否定嗎？

Question

what does yet mean...?
Haven't met you ''yet'' !
can I just only write ''I haven't met you'' , no yet? 
haven't 和 yet不都是否定嗎？

Answer

yet is used when you say i havent met you yet meaning you havent even seen he person before but when you meet someone you could say i havent met you before
for example>>your friend askes you have you met (name) and if you havent but know you will be meeting them soon say i havent met them yet??
hope you understand what i mean

Answer

yet indicate that it hasn't happened up to the present time, although it probably will happen 
but when u don't say ''yet'' 
it might happen or might not

Answer

If you add "yet" it means you think you will meet the person in the future.
It is like 还没。。。呢 in Mandarin.

I haven't met you = 我没认识过你
I haven't met you yet = 我还没认识你呢