+1

Hi there,

Can you check for me if these sentences are grammatical, please?


How is it possible if you could help me out on this matter.

How possible is it if you could help me out on this matter.

I was a lawyer prior to/before becoming a president.

He finished it prior to/before to his death.


Many thanks.

+1

How is it possible if Could you could help me out on this matter?

How possible is it if you could help me out on this matter. (see above)

I was a lawyer prior to/before becoming a president. (either one is fine)

He finished it prior to/before to his death. (either one is fine)

I will finish it prior to/before to you arrive. (incorrect)

I will finish it prior to your arriving. (One possible answer.)

I will finish it before you arrive. (Another possible answer.)

Comments  

Also

I will finish it prior to/before to you arrive.

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 MountainHiker's reply was promoted to an answer.

Thanks Sir.