1.
He was not happy at all regardless of his wealth.(regardless of)
(1)
he was wealthy, he was
not happy at all. (despite the fact that)
(2)
money he had, he was not
happy at all. (no matter 从句)
(3)
, he was not happy at all. (as / though 引导倒装句）
(4)
, he was not happy at all. (however 引导倒装句）
【考点】
同位语从句;
让步状语从句;
倒装句;
句型转换;