語概130頁參考答案如下

i. I know that he knows that you know that I hate war.

ii. These sentences show that there is no longest sentence in English. One can go on indefinitely, constructing longer and longer sentences by appending "He/she/they/John, etc., Know(s) that" to the previously constructed sentence.

iii. While it is true that in princinple we could construct a sentence of infinite length (linguistic competence), in actual behavior there are lapses of memory and mismakes, and we would eventually have to stop constructing a longer sentence in order to eat, drink, and sleep. These are facts about linguistic performance.