Question

请问“他遗憾的说”用英语怎么说，谢谢

那如果更准确的是“他面带遗憾（的表情）的说”呢

Answer 1

he says in regret

In an expression full of regret, he says
or
he says in an expression full of regret

Answer 2

His face wore regret to say
他面带遗憾的说
He regret to say
他遗憾的说

Answer 3

he says in a expression of regret。