faced with threat of water shortage,people are learning to save water答案是faced怎么不是facing阿面对,不是主动?

问题描述:

faced with threat of water shortage,people are learning to save water
答案是faced
怎么不是facing阿
面对,不是主动?

这是独立主格结构,表示一种状态,前面的being省略了。

如果有with 就是固定词组be faced with,直接把be省略就可以了。
如果没有with,就用facing,现在分词作状语,动作由自己发出,表主动。

完整的短语:be faced with,在此省略了be

面对有两种用法,1,facing something 2、be faced with 主要看后面有没有with