Geniş zaman in the negative say ben gelmem

And in (need to) say gelmem lazım

and gelmen it dosent negtive

so I cant understand about this rules

And Konuşma some times mean dont talk

sometımes mean talking

how is it

thanks in advance

Nifrtity, do you want to say "Gelmem lazım" or "Gelmemem lazım" ?

I want to know about different between its without Lazım gelmem is negative but when add lazım it is become not negtive what is the rule of that ?

Sometimes,i hardly understand you. 

Yes, you are right about some words that we are calling them "Eşsesli sözcükler = Homonym words". 

I think you should read carefully the sentence, because the meaning of them will help you in that case.

The same suffix -mA- accidentally has two different functions in Turkish grammar.

1. It is the negative marker. (In aorist present tense 2nd and 3rd persons it takes the form -mAz-.) As you said .

2. It makes nouns from verbs, i.e. infinitives. As you also said .

Just believe in your own reasoning, nifrtity.

The syntactic position of the verb shows which of these functions in in question. You can also find them in the same word:

                      başar|ma|ma korkusu ´the fear of not succeeding/failing´

where başar|ma|ma = stem + NEG + INF.

1. Gel|me|m. ´I won´t go.´ -mA- is NEG

2. Gel|me|m lazım. ´I must go.´ -mA- is INF

Hope it helps.

Thanks Abla and Harp00n