You can use a negative statement and a positive question tag to ask people for things, or to ask for his information.

由否定陈述句加肯定简短问句构成的反意疑问句可用以提出请求，要求帮助或寻求信息。

youdao

You can use a negative statement and a positive question tag to ask people for things, or to ask for his information.

由否定陈述句加肯定简短问句构成的反意疑问句可用以提出请求，要求帮助或寻求信息。

youdao