Mr.Whate showed her students some old maps ____ from the library._英语解答

Mr.Whate showed her students some old maps ____ from the library.为什么要填borrowed,而不是to borrow
说清原因,辨析一下此句中to borrow和borrowed的区别,最好能举个例子

人气：498 ℃　时间：2020-01-30 10:00:57

解答

那些被从图书馆借出去的旧地图
borrowed表被动,省略了which were
to borrow 表示要发生的动作,完全没有被动的意思