Successful as [though] he is, he is not proud.
Cold as [though] it was, they went on working.
Much as [though] I’d like to, I can’t join you for lunch.
Hard though [as] they tried, they couldn't make her change her mind.
Try as [though] he may, he will not pass the examination.
Search as [though] they would, they would find nobody in the house.
Boy as [though] he was, he behaved like a girl.
Big puzzle as [though] it was, it hadn’t got the better of Jim.
正：Pretty though she is, she is not clever.
正：Though she is pretty, she is not clever.
正：Pretty as she is, she is not clever.
误：As she is pretty, she is not clever.