crowded的comparative是什么?

crowded的comparative是什么? crowded的比较级?是less crowded还是fewer crowded?为什么? comparative的意思 comparative crowding和crowded的区别是? crowded的比较级和最高级是怎样的? crowded with的近义词 crowded的反义词是什么 crowded的意思? loudly crowded 的比较级 crowded的比较级 Crowded 英语翻译In a perfect world,trade patterns should be determined by comparative advantage:the comparative cost of making different goods yourself as opposed to buying them from various countries.对冒号后边的部分有些困惑（as在这里是 be crowded with中crowded是v.还是adj. comparative recently Shanghai is a crowded city为什么这里选crowded而不选原型呢?was后面加的是过去式还是··· The traffic is busy 交通是拥挤的用crowded 是不是更好? 派生词是什么英语中什么是派生词?crowded是一个派生词吧 怎么判断的?