Question

It is a pen.改为否定句,并作肯定回答.改为一般疑问句,并作否定回答

Answer 1

it is not a pen 否定句
一般疑问 is it a pen ? no it isn't
否定句是不能坐肯定回答的 必须得是疑问句才能回答 希望你说的更明白些

Answer 2

It isn't a pen.

Yes, it is.

Is it a pen? No, it isn't.

Answer 3

It isn't a pen.
Yes,it is
is It a pen?
no,it isn't

Answer 4

It isn't a pen .
——Yes,it is .
Is it a pen ?
——No it isn't.