谁能把instead of这个短语好好讲讲?

问题描述:

谁能把instead of这个短语好好讲讲?
有一道提供大家参考:
he walked to school instead of_______________.
A.by bike B.by bus C.taking bus D.riding his bike
正确答案是D

instead of为一个介词短语,意为代替,因为是介词短语,所以后面不可再跟by.所以AB项不可选,而坐公交车是take the bus,所以只有D了