he has offered to help me with my English but asked me to play with him in exchange

问题描述:

he has offered to help me with my English but asked me to play with him in exchange
in exchange在句子中做什么成分,修饰哪个词的

短语在句中相当于状语或是副词,翻译成:
他答应帮我学英语,作为交换,他要我陪他玩.