YOU SAID:

I have never been able to talk to my parents because they are dead.

INTO JAPANESE

両親が亡くなっているので、私は両親と話すことができませんでした。

BACK INTO ENGLISH

I couldn't talk to my parents because my parents were dead.

INTO JAPANESE

両親が死んでいたので、両親と話すことができませんでした。

BACK INTO ENGLISH

I couldn't talk to my parents because they were dead.

INTO JAPANESE

両親が死んでいたので、私は両親と話すことができませんでした。

BACK INTO ENGLISH

I couldn't talk to my parents because my parents were dead.

INTO JAPANESE

両親が死んでいたので、両親と話すことができませんでした。

BACK INTO ENGLISH

I couldn't talk to my parents because they were dead.

INTO JAPANESE

両親が死んでいたので、私は両親と話すことができませんでした。