very well做状语,用来表示主语的状态.
宾补,顾名思义是与“宾语有关的”,如him,其作用是补足宾语的意义,尤其是2、3两句,如只这么说：I asked him./ I made him.听者就不太明白你想表达什么.加上宾补：to stay longer here/ stand there.句子的意思就很完整了.
应当说,宾补与直接宾语容易混淆：He gave me a gift.a gift 是直接宾语,不是宾补.
两者最主要的区别是,宾语+ 宾补：存在逻辑上的主谓关系,即有点主语+ 谓语动作的关系；而“间接宾语（人）+ 直接宾语（物）之间不存在这种主谓关系.
I saw him crying/ cry there.
I asked him to stay longer here.
I made him stand there.
像上述三句中的there/ here就是”状语：一般可以用疑问副词提问的都是状语：When?Where?How?Why?For what?