Question

1，Tom is a boy.(改为一般疑问句) 2，Is this your brother.(

1，Tom is a boy.(改为一般疑问句)
2，Is this your brother.(作否定回答)
3，Those are erasers.(改为单数句)

Answer 1

Is Tom a boy

追答

No,it isn't

That's an eraser

Answer 2

Is Tom a boy?

追答

No,he isn't.

That is an eraser.

Answer 3

1 IS tom a boy

追答

2 Isn,t this your brother

Those is eraser