呢句點轉past participle呀?

If you convert into past participle, it means the situation is no longer true.

My uncle has been very happy as he was married to a woman he loved;
My uncle was very happy as he has been married to a woman he loved;

My uncle is very happy (still). He has been married to a woman he loved (they are now divorced/or the woman passed away).

My uncle being married to a woman he loves is very happy.
或
My uncle married to a woman he loves is very happy.

My uncle was happy because he has merried a woman that he loves.

my uncle had been very happy. He had been married to a woman he loves.