compared with other years,we receive more...句子为何用compare的ed形

这明显是一个句子,逗号前面的是非谓语形式.我们都知道,compare with和be compared with
的区别.比如说,I compared this picture with another one.和 The picture was compared with another one.显然,I和非谓语应对应的主语不是同一个,画被比较 而不是我和画进行比较 .用compare时两个比较的对象一定是同一种类的...有一部分词,变非谓语形式把be 去掉即可,因此也有特殊形式,如tired 非谓语时不能变为ing形式,也可理解为 感到 .