根据谓语动词的构成,对主语提问.
1 如果谓语动词中有be,用be提问
he is eating an apple,isn't he?
2 如果谓语动词中有情态动词或助动词,用情态动词或助动词提问
he has been to Dalian,has't he?
you should listen to me ,sholdn't you?
3 如果谓语动词既没有be 也没有情态动词,用助动词提问
You finished your homework,didn't you?
供参考.
再问： they have a small family 怎么变成反义疑问句啊
再答： they have a small family ，don't they？ 这里面就属于第三种啊，直接用助动词提问即可。
