His father began to work since he was seven years old.这个句子有错吗?
问题描述：
His father began to work since he was seven years old.这个句子有错吗?
答
主从句的时态不统一,要么把前面的变成完成时,要么把since换成when
His father began to work since he was seven years old.这个句子有错吗?
主从句的时态不统一,要么把前面的变成完成时,要么把since换成when