He is a boy的否定句和一般疑问句和肯定回答和否定回答.It is my pencil恩威并举和一般疑问句和否定回答和肯定回答.请一起发过来不要分开发
问题描述：
He is a boy的否定句和一般疑问句和肯定回答和否定回答.It is my pencil恩威并举和一般疑问句和否定回答和肯定回答.请一起发过来不要分开发
答
He isn't a boy.
Is he a boy?
Yes,he is.
No,he isn't.
It isn't my pencil.
Is it my pencil?
Yes,it is.
No,it isn't.