what was she doing还有一个what she was doing两者有什么区别?

what was she doing还有一个what she was doing两者有什么区别?
what was she doing
还有一个what she was doing
两者有什么区别?

what was she doing还有一个what she was doing两者有什么区别?
第一个是疑问句,第二个是带有疑问词的陈述句