否定句：She doesn't want to be a singer,
一般疑问：Does she want to be a singer?
肯定：Yes,she does
否定：No,she doesn't.
She wants to be a singer,将这个句子改为否定句和一般疑问句,一般疑问句要做肯定和否定回答
否定句：She doesn't want to be a singer,
一般疑问：Does she want to be a singer?
肯定：Yes,she does
否定：No,she doesn't.