of one's own accord是介词短语吗,意思是自愿地,主动地；是不是做副词呀,为什么介词短语能做副词?不知道我理解的是否正确

介词短语起副词的作用,在句子中做壮语.这样情况很多,如,on your own, by himself. 例如, you can do it on your own.he will eat by himself.\7介词短语起副词的作用,在句子中做壮语.这样情况很多,如,on your own, b...