it was said that that that that that boy wrote is that.据说那个男孩写的那个that是that.
1.that引导从句
2. that那个
3. that,就是that这个单词
4. that,引导定语从句,修饰前一个that
5. that,那个,形容词
6. that,还是指that这个单词本身.