仿写Water is to fish what air is to man

Water is to fish what air is to man!中what air is to man是什么语法 "Water is to fish what air is to man" 这里what是神马用法 Water is to fish what air is to man不用翻译,请问what是什么从句? Air is to man is what water is to fish.改错并说明理由如题 as air is to man,so is water to fish. ari water is to fish,so air is to man. ______ air is to man,so is water to fish. as water is to fish,so air is to man As water is to fish,so is air to man "Water is to fish （ ）air is to man" water is to fish what air is to man.这是明喻还是暗喻? what environment is to man,what is water to fish.