The fact that that sentence has been proposed to you, means that you should think by yourself over that subject.

I think it sounds more clear...its a riddle actually... I said that,"that 'that' that that student used in his essay is incorrect. In addition to these definitions it is possible to use any word as a noun when referring to the word itself in quotation marks: The third "that" is used in this way, as it is in this sentence as well. So to analyze the sentence now: I said that(1),"that(2) 'that'(3) that(4) that(5) student used in his essay is incorrect.." (1)The first "that" is used according to the second definition, as a conjunction. It introduces the quote. Strictly speaking it isn't necessary, but in English it is allowed. For example, either of the following two sentences are correct: 1. I said, "I don't want to do any more riddles." 2. I said that, "I don't want to do any more riddles." (2) The second "that" follows the first pronoun definition: "The one designated or implied." (3) The one it designates is the third "that," which has quotation marks since it references itself (it is used as a noun). This is easier to understand if you imagine another word, like "letter" in its place: I said that, "That letter that..." - except that it was not a letter used, but the word "that." (4) The fourth "that" is used according to the second definition. This is easier to understand if you replace it with "which": I said that "that 'that' which that student used..." (5) The fifth "that" refers to the student, again using the first definition: "The one designated or implied.

sorry..it looks like a mess...lol

I think it sounds more clear...its a riddle actually... I said that,"that 'that' that that student used in his essay is incorrect." In addition to these definitions it is possible to use any word as a noun when referring to the word itself in quotation marks: The third "that" is used in this way, as it is in this sentence as well. So to analyze the sentence now: I said that(1),"that(2) 'that'(3) that(4) that(5) student used in his essay is incorrect.." (1)The first "that" is used according to the second definition, as a conjunction. It introduces the quote. Strictly speaking it isn't necessary, but in English it is allowed. For example, either of the following two sentences are correct: 1. I said, "I don't want to do any more riddles." 2. I said that, "I don't want to do any more riddles." (2) The second "that" follows the first pronoun definition: "The one designated or implied." (3) The one it designates is the third "that," which has quotation marks since it references itself (it is used as a noun). This is easier to understand if you imagine another word, like "letter" in its place: I said that, "That letter that..." - except that it was not a letter used, but the word "that." (4) The fourth "that" is used according to the second definition. This is easier to understand if you replace it with "which": I said that "that 'that' which that student used..." (5) The fifth "that" refers to the student, again using the first definition: "The one designated or implied." Clearer? Perhaps not. However, does the following sentence make sense? I said that, "that word which that student used in his essay is incorrect." Now just replace "which" with "that," and it still makes sense, right? I said that, "that word that that student used in his essay is incorrect." And finally, replace "word" with "that," and it is clear that the speaker is referring to a specific incidence of the word "that," in whatever the student used, and that the speaker thinks (for some r

That really is an exercise for you to work out. Here are all the "that's" in order: 1. that = conjunction (say that) 2. that = demonstrative (this/ that) 3. "that" = the word "that" 4. that = relative pronoun (that/which/who) 5. that = demonstrative (that student) No do the rest yourself.