They had a dispute over who should be his dance partner.
老师,over 在文中是副词吗?它是修饰动词的吗?
a dispute over who should be his dance partner:
over 是介词,不是副词,意为“关于;有关”,相当于about 之意。本句over 如果是副词,那么,who should be his dance partner 这个从句,如何处理?over who should be his dance partner 作定语,修饰dispute。
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