是a man of fifty还是a man about fiftyMr.Black is a man_fiftyA:in B:about C:at D:of

问题描述:

是a man of fifty还是a man about fifty
Mr.Black is a man_fifty
A:in B:about C:at D:of

a man of fifty

哦,那就是of了

a man of fifty 做复合表语