不识抬举-------Bring a cow to the hall and she will run to the byre

例句：
A: The boss promoted him manager of the firm, but he refkised.
那老板提升他为该公司的经理,但是他拒绝了。
B: What the hell is in his mind? Didn't he think it unwise to bring a cow to the hall and she will run to the byre?
他的心里究竟在想什么？难道他不知道不识抬举是不明智的吗？

同义词：
give him enough rope and he will hang himself