句子分析下面这句Vehiclepollutionisthoughttobethemajorreasonforthedeclineofairqualityinmajorcitiesthroughouttheworld.其中isthoughttobe是什么用法,还原之后句子结构是什么,isthoughttobe还原成主动

Question

句子分析
下面这句 Vehicle pollution is thought to be the major reason for the decline of air quality in major cities throughout the world.其中is thought to be 是什么用法,还原之后句子结构是什么,is thought to be 还原成主动语态的搭配是什么,还有throughout 在这里是什么用法?

Answer 1

is thought to be 这里是被动语态的谓语部分被认为是改成主动语态应该是这样吧People think that vehicle pollution is the major reason for the decline of air quality in major cities throughout the world.thr...