I noticed that 1st person possessive and ´to be´ is the same, when the word ends in a vowel.How do you know the difference? I can´t think of many examples but, ´my lady´ and ´I´m a lady´.

Edited (7/23/2013) by denizli [consanant not vowel]
Edited (7/23/2013) by denizli

That´s right. But  when the word doesn´t end with a vowel. 

We know the difference from the meaing of the sentence. And 1st person posssesive suffix mostly use with "benim".  

Stress is dfferent. That way you can differentiate it.

For example (with stressed syllable in red):

Çocuğum = I am a kid

Çocuğum = My kid

And even,

Çocuğum = hey kid

This is way stressful for me.