我认为你想的太全面了,主从复合句,反意疑问句需看主句,肯或否看从句,（因为主从句的否定句需要否定从句）he said he was right,didn't he?
he said he wasn't right,did he?
但是有特例,当主句是I think(believe,suppose,imagine,expect等) + 宾语从句”,反意疑问句部分应与宾语从句的主谓保持一致,并要注意否定转移.
例 I don’t think you have heard of him before,have you?我认为你以前没有听说过他,是吗?