he knocked his leg against the desk 为什么要用against?
问题描述:
he knocked his leg against the desk 为什么要用against?
P234 上
答
knock against 是个固定短语 表示撞击,踢到什么东西上.
he knocked his leg against the desk 为什么要用against?
P234 上
knock against 是个固定短语 表示撞击,踢到什么东西上.