He is three yeas old. 一般疑问句 肯定回答 否定回答 否定句

She has an orange .和We have boxes. 一般疑问句 肯定回答 否定回答 否定句 问题补充：He is three years old. 一般疑问句 肯定回答 否定回答 否定句

Is he three years old? Yes, he is. No, he isn't. He isn't three years old.
be动词的一般疑问句是把be动词拿到主语之前。
在美国英语中，have是一般动词，所以不能拿到主语之前，要借助于助动词do和does。
Does she have an orange? Yes, she does. No, she doesn't. She doesn't have an orange.
Do you have boxes? Yes, we do. No, we don't. We don't have boxes.
希望我能帮助你解疑释惑。

一般疑问句：Does she have an orange ? Do we have boxes? 肯定回答：Yes,she does. Yes we do. 否定回答：No she doesn't. No we don't. 肯定句：She doesn't have an orange . We don't have boxes.

他三岁开始学画，五岁时就已经展现出在绘画上的天赋。