My brother has been to Shanghai.请问这里has been to在句子中做什么成分?请将has,been,to分开具体分析，若不能分开，请说明理由
问题描述：
My brother has been to Shanghai.请问这里has been to在句子中做什么成分?
请将has,been,to分开具体分析，若不能分开，请说明理由
答
has been to 是be to的现在完成时，无需分开，意思是去过某地（已经回来了）。
答
My brother has been to Shanghai.
我哥哥曾经到过上海
My brother 主语
has been to谓语到过什么地方 已经回来了
Shanghai.宾语