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问题一二基本上是一样的，the和s不冲突，然后我个人会自动用复数啦…有请英文大神开示能否用单数

我的理解是都会地区“房子”的价格，这样当然是复数

问题三：高房价“早就已经”对社会产生重大影响，所以我会用完成式

早上才刚写到，society详解本写不能加the

因为价格有很多种（？

In general, prices are closely related to the amount of currency in circulation.And......because it's currency, so that should be"have".It comes with present perfect tense because it istalking about the impact, which, of housing prices on society, is still going on.