burn完成时态是什么,burn的过去式和过去分词及中文

完成时态是have/has burned ，中文意思是烧伤了

Small groups of leftists have burned his photo, and fiery criticism has also come from the right with one leading conservative radio host calling for him to step down.一小群左翼分子烧毁了他的照片，右派也对他进行了激烈的批评，一位主要的保守派电台主持人呼吁他下台。