YOU SAID:

I will have been doing it for two hours by that time.

INTO JAPANESE

私が行っているそれ 2 時間その時まで。

BACK INTO ENGLISH

I have done it two hours by that time.

INTO JAPANESE

私はそれの時までの 2 時間を行っています。

BACK INTO ENGLISH

I do two hours before it's time.

INTO JAPANESE

私は 2 時間前にそれは時間を行います。

BACK INTO ENGLISH

I two hours ago it's time.

INTO JAPANESE

私は 2 時間前にそれは時間。

BACK INTO ENGLISH

I was two hours ago it's time.

INTO JAPANESE

私は、2 時間前にそれは時間だったです。

BACK INTO ENGLISH

I was two hours ago it was time it is.

INTO JAPANESE

私は 2 時間前にそれは時間だったです。

BACK INTO ENGLISH

I was two hours ago it was time it is.