He received a letter from his brother yesterday HE(两个单词的空)his brother yesterday 同义转换

问题描述:

He received a letter from his brother yesterday HE(两个单词的空)his brother yesterday 同义转换

heard from为什么可以用heardheard什么意思?heard是hear的过去式,因为句子中有明显的过去时间状语yesterday,所以用过去式。hear from意思是收到某人的来信的意思。