This is my sister.改为一般疑问句并做肯定回答 That's my brother改为否定句
问题描述：
This is my sister.改为一般疑问句并做肯定回答 That's my brother改为否定句
答
Is this your sister ?
Yes, she is.
That's not my brother.
That isn't my brother.
答
Is this your sister?
Yes, she is
That isn't my brother
答
Is this your sister?
Yes, it/she is.
That isn't my brother.
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有不会的可以再问我:）