Do you like Beijing?与 you like Beijing?是同一个意思,you like Beijing?各样回答是不是错的?

do是助动词,引导一般疑问句
you like Beijing?口语里边会这样用,如果是考试的话LZ还是用前者好我喜欢北京呢？应该怎样翻译？I like Beijing我喜欢北京如果是回答上面的疑问句，肯定回答是，yes, I do,否定回答是，no,I don't其实我要问的就是什么情况加do？麻烦举例说下。一般疑问句如果里边不是be动词引导的，要用助动词来引导we are studentsare you students?yes,we areno,we aren't这个是be 动词引导的they go to school at eight.do theygo to school at eight?yes,they do no,they don't