1 宾语从句：They/ people say that she lives there happily. 2 主语从句：上面的句子可以变成主语从句：It is said that she lives there happily .(It 是形式主语,she lives there happily是真正主语.所以,你写的应该是主语从句,it is 不能省略.) 3 简单句：She is said to live there happily.(注意：to live there happily是she的主语补足语,补充说明主语.)
