My father is ( )Shanghai now.

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  • My father is (in)Shanghai now.

    这里考in,on和at的区别,in后接大地方,比如in China,in Bei jing.at后接小地方,比如at school,at the post office.on 后面接的是一般的泛指,或者指事物的表面,如on the earth,on the desk.