My uncle has been to Shanghai -----------

My uncle has been to Shanghai ----------- ---has your uncle been to shanghai?-—only twice. 用have/has been to ,have /has gone to 填空 My uncle（）the Great my uncle has gone to shanghai（ for a meeting）对划线部分提问 My uncle has been a policeman() (D)My uncle has been here____. I have never been to Shanghai,but my brother has been there My brother has been to Shanghai.请问这里has been to在句子中做什么成分? My uncle has been to America (twice).---------对括号部分提问 My uncle has been to Beijing ( ).He will go there for a thir my uncle has been to Shenzhen __three times__（对划线部分提问） They ____（种植）some vegetables yesterday. My uncle has been to