宾语从句的that省略问题

宾语从句
I said that he was a good boy.
I saud that he was a good boy, and that he led a hard life.
第二句里第二个that不能省略．宾语从句有多个that时，后面的不能省去的

在宾语从句中的that都可以省略,但有多个that的时候,后面的不可以省略,而第一个that可以被省略.