Happiness is about having each tiny wish come true.这句话的语法

问题描述:

Happiness is about having each tiny wish come true.这句话的语法
以及后面come true的come是原型还是过去分词?

答:主句是:Happiness is about +动名词短语.这是一个主系表结构.主语是happiness,is是系动词,表语是一个介词短语.about是介词,意为:关于.的.动名词短语having each tiny wish come true 是由短语have sb.do sth....