people could use a time mechine for travelling to the future划线 travelling to the future.对划线部分提问是不是可以改成what do people use a time mechine for?
问题描述：
people could use a time mechine for travelling to the future
划线 travelling to the future.
对划线部分提问
是不是可以改成
what do people use a time mechine for?
答
是
答
我感觉是不是这样好点
What can people do to use a time machine?
答
what do people use a time mechine for?和What can people do to use a time machine?是 Chinglish!
应该是
What can be used by people to travel to the future?