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1、hear from指“收到……的来信”“得到......消息”，与get or receive a letter from 同义，其宾语应是人，而不是信。
2、I often hear from my parents.我经常收到父母的来信。
3、I have never heard from him since he telephoned.自从他给我打了一次电话之后，我一直没有收到他的信。
