题目内容：

I do not think that that that that that he writes on the blackboard is right is true
分析该句

优质解答

第一个that,作为引导后面整一个从句用；第二个that,做adv.用,表强调（这个不确定）；第三个that,作为adj.形容后面一个that；第四个that,就是特指他写在黑板上的那个that；最后一个that,作为前一个that的定语从句引导词.