.I hear the headmaster is going to london next week .为什么用hear.而不用hear of 或者hear from
问题描述：
.I hear the headmaster is going to london next week .为什么用hear.而不用hear of 或者hear from
答
首先 hear of 是听说过的意思 hear from是受到某人信件的意思
此处the headmaster is going to london next week 为一个句子
为听说的内容 用法跟 say that 是一个道理··that可以省略