1.Is he...
是对主系表结构的肯定提问.例如"Is he right?"是对"He is right."的提问.
2.Isn't he...
是对主系表结构的否定提问.例如"Isn't he going to school?"是对"He isn't going to school."的提问.
3.Does he...
是主谓宾结构的肯定提问.例如"Dose he like apples?"是对"He likes apples."的提问.注意,Dose提问后面动词用原型.
4.Doesn't he...
是对主谓宾结构的否定提问.例如"Doesn't he buy basketballs?"是对"He doesn't buy basketballs."的提问.