题目内容：

He doesn't konw (that is where)he was born.括号里为什么是that is where?
是不是就是一个that开头的宾语从句?
至于用that开头,也没有特别用法.是不是就像经常说的that's my book.啥的

优质解答

He doesn't konw (that is where)he was born.突然看清楚了,这个句子是这样的可以理He doesn't konw 【that宾语从句引导词,省略】【that 指示代词,“那个地方”,作从句主语】is 【where he was born表语从句.】句意...