谁能帮我说下这两个句子的变形所涉及的英语语法！

He would insist the elderly woman had really attended their wedding accidentally.
变形为：He would insist the elderly woman did attended their wedding accidentally.
Bill really has some problem with his math class.
变形为：Bill does have some problem with his math class.
其实这两句都是练习动词的强调形式，如：
I did see him in the park yesterday.
昨天我确实在公园里看见他的
等于:I really saw him in the park yesterday.
He does have a gold watch with him.
他身上确实有一块金表。
等于 : He really has a gold watch with him.
你第一句变形后句中的 did attended 应为did
attend