I come from shanghai 中 谓语部分是come 还是come from?

I come from shanghai 中 谓语部分是come 还是come from? --- ---You come from?I From shanghai _________they come from Shanghai? I come from shanghai什么意思 I come from Shanghai .是客观事实吗? 是comes from还是come from? come from 还是 comes from I come from I come from thailand I come from America. come from I am/come from 还是I was/came from?