第一个that引导宾语从句 可省略 没有实际意思 把它省略掉句子变成 He said that that that that boy wrote was wrong. 第二个that指的是限定第三个that 意思是 那个,我们换个限定词this就行咯, 句子变成: He said this that that that boy wrote was wrong. 第三个that就是一个单词,你可以不把它看做that,可以把它看成其他单词比如换成 book句子变成: He said this book that that boy wrote was wrong. 第四个that应该是定语从句中的关系代词 作宾语是可以省略的,句子变成: He said this book that boy wrote was wrong。 最后一个that应该和boy连用 那个男孩 同上可以变成“这个男孩”the boy句子变成: He said this book the boy wrote was wrong。 全句意思为: 他说那个男孩写的那个英语单词(that)是错的 只要你语法过关就没问题 要一个一个来