not一般用在一些非实意动词后面,比如 is not, does not , will not , can not 为了好理解,你可以和no比较一下 no,not 这两个词在词义和使用场合上都有所不同. No可以作副词,也可以作名词和形容词;not只能用作副词.现将它们各种用法分述如下,以便比较:作副词时,no有下列两种用法:(一)作为yes的反义词,用在回答问题的场合,表示“不”的意思.例: No,I won't go to the casino.不,我不去赌场. (二)用在比较级之前,表示“并不”之意.例: The weather today is no better than it was yesterday.今天的天气并不比昨天好. 用作形容词时,no表示not any的意味.例: There is no(=not any)time to lose.时不可失. 注:当no用作形容词时,可直接放在名词之前,如果名词的前面有a、any、much、many、enough等词,就要改用not,不用no,因为not是副词,只有副词才有资格修饰a、any、much、many、enough等词.因此,我们说: I have no money.或I have not any money.作名词时,no表示“否定”的意思.例: Two noes make a yes.否定的否定就是肯定. Not可用于(一)修饰动词: I do not know any of them.这些人我一个都不认识. (二)修饰形容词: It's not cold today.今天天气不冷. (三)修饰不定冠词: Three decades ago not a year passed without a number of people falling victims to hunger here.三十年前,这里每年都有不少人死于饥荒. (四)修饰副词: Not seldom did I go to Victoria Park while I stayed in Causeway Bay.我住在铜锣湾期间常到维多利亚公园去. (五)修饰连词: They are working hard not because they want to make money but because they know what they are working for.他们在努力工作其原因并非是为了赚钱,而是在于他们知道为何而工作. 请注意下面no和not的区别: Mr.Chen is no fool.陈先生决不是傻瓜. Mr.Chen is not a fool.陈先生不是傻瓜. He is no good at tennis.他的网球打得很不好. He is not good at tennis.他的网球打得不好. I have no more than ten dollars.我只有十元钱. I have not more than ten dollars.我有不超过十元钱.