题目

英语长句分析,较难,
However,it is common to hear assertions of the kind " if you were left on a desert island a few seed potatoes would be more useful to you than a million pounds" as though this proved somthing important about money except the undeniable fact that it would not be of much use to anyone in a situation where very few of us are at all likely to find ourselves.
if引导的是虚拟从句,但是为什么proved也用过去式.
第二个it在句中做什么成分?

提问时间：2020-07-27

答案

as though （或as if) 引导的从句是虚假内容,用过去时和现在时的情况都有,例：I'm treated as if I were a spy.I'm treated as if I'm the enemy of the government.我个人理解,前后时态不一致,大概能更好地强调...