Please look at the following and advise.  I shall be grateful.

CAN:-

Yaz-abilir                                        He can write

Yaz-abilyor                                     He is capable of writing             

Yaz-abilecek                                   He will be able to write

Yaz-abildi                                        He was able to write

Yaz-abilecek-ti                               What will this mean? [or it is not used??]

CAN´T:-

Yaz-amaz                                         He can´t write

Yaz-amýyor                                     He is incapable of writing

Yaz-amýyacak                                He will not be able to write

Yaz-amazdý                                     He was not able to write

Yaz-amýyacak-tý                             What does this mean?  [or is it not used??]  

Thanks a lot.

Tazx1

I´ve checked it with winmekmak, and it says that first one means "He was going to be able to write" and second one means "He wasn´t going to be able to write". Also it seems that second one should look like this: Yaz-ama-yacak-tý. Maybe someone here can help and say if it is correct ?

 Thank you tomac efendi.

Tazx1

 Agree with you.

Yeni bir bilgisayrý aldýðý için bana her gün yazabilecekti, fakat internet çöktü ve yazamadý.

He was going to be able to write to me every day because he bought a new computer, but then the internet went down and he couldn´t write.

 you have an -i- missing.

It should be

Yazabiliyor.