Question

宾语从句如何变被动语态

Answer 1

英语 关于含义宾语从句的主动句变被动的问题
看到语法书上说带有宾语从句的句子变成被动语态时,通常用it来作为被动句的形式主语,
宾语从句保留不变.如：They said that he had gone abroad to study English．—It was said that he had gone abroad to study English．提示：带有宾语从句的句子变成被动语态时,为了简练,还可把从句的主语变为被动句的主语,从句的谓语部分还可以变为不定式短语.但我在新概念英语书上看到 He told me the police had arrested the thief变被动直接是主句宾从变被动,变为 He tole me the thief had been arrested.

Answer 2

宾语从句变被动语态跟其他结构大差不差，直接看四个例句，重点看谓语部分（助动词、实意动词过去分词等）的变化：
1)We believe that it's true. It's belived true by us.
2)We don't doubt that it's true. It's not doubted true by us.
3)We never doubt whether it's true. Whether it's true is never doubted by us.
4)Most of people undoubtedly never doubt what they believe true.
What they believe true is undoubtedly never doubted by most of people.