These qualities help people achieve their goals because they will not give up so easily when ____ (face)difficulties. 答案是facing 我怎么知道是填ing形式还是原型呢? 好像我填语法填空时经常错这种类型的,该怎么查漏补缺?
they will not give up so easily when ____ (face)difficulties. 这句话的整句应该是:they will not give up so easily when they are facing difficulties 其中的they are 是可以省略的。 这个东西在语法中什么还真忘记了,告诉你一个好办法,就是多去读,培养语感,所以我不知道为什么,但是我知道答案。 就是这样。