confusions

[sajidatique.eng]

Dear Sir/Mam


In present perfect we are using has/have in structures, and in future perfect we use only have why?
why we are not taking Has with will?

I am confused badly.................


on your clarification i will be obliged forever

[Tdol]

After modal verbs like will, we use the bare infinitive, so we say I will have done it and She will have done it, just as we say I will go and He will go, and not He will goes.