first time + ?

[vkhu]

Which usages for these structure are correct?

this is the first time somebody do("does" if needed)/do(infinitive)/did/have done something
it is the first time somebody do("does" if needed)/do(infinitive)/did/have done something

[bhaisahab]

Which usages for these structure are correct?

this is the first time sb do("does" if needed)/do(infinitive)/did/have done st
it is the first time sb do("does" if needed)/do(infinitive)/did/have done st

Please repost your question without abbreviations, perhaps that will make it more understandable.

[vkhu]

Please repost your question without abbreviations, perhaps that will make it more understandable.

done. Can you help me now?

[emsr2d2]

I'm going to take a stab even though I'm really not sure what your question is. If you are talking about something being done at the same time as it is being spoken about:

This is the first time I have done this.
This is the first time he has played tennis.
This is the first time we have been to Greece on holiday.