1、be free from没有……的,不受……影响
be free from 可以看成 原本就没有束缚
而 be freed from 是原本有这个束缚,由于种种原因,挣脱了这个束缚
eg: be free of charge 免费 be free from the homework 从作业中解脱,摆脱、
2、be identified as…被认为是… 被识别为…,被确认为…
eg: Non - conforming products should be identified as per Status Identification Control Procedure.
应按《状态标识控制程序》标识不合格品.
3、be known as被称做……,以……著称
be known as 意为“作为……而著名”,其后的名词表示一个人的身份、职业等。如:
Liu Huan is known as a singer.刘欢作为一个歌手而出名。
4、 be known to为……所熟知
be known to “为……所了解/知道”,其后接表示人的词语。“(人们都)知道”,其后接动词原形。如:
He is known to all in our village.村子里的人都了解他。
5、be popular with…受……欢迎 注意区分与be popular to 的差别
例如:Loud music is more popular with young people than with old.
be popular to意思和be popular with差不多,但是用法上有点区别 例如:If you want to impress your peers (friends) it is generally more popular to show them , (to do this, to say, usage with the verb to be) your cool rDVD collection