意思是having a clear space to sit down and having a clear space to hang out, 所以hang out 应是同sit down 一致不是同having 一致
不是的,这里的hang 是和sit 并列,所以都是动词原形
现在分词作状语,动名词作名词性的成分, painted white,the house looks bigger(现在分词作状语) saying is easier than doing(动名词做主语) having done用于动作的时间在句子主语之前