不可数名词的.doc

不可数名词的 “可数”情况 通常来说，个体名词和集体名词是可数名词，物质名词和抽象名词是不可数名词。而在某些特殊情况下，有些不可数名词又可转化为可数名词。下面仅就这些特殊情况做以说明。1. 少数名词既可用做不可数名词,又可用做可数名词,但意义有所不同.如:单词不可数名词可数名词wordchangeexperienceworkroomexerciselifefishtimepaper消息;诺言零钱经验工作空间锻炼生活;生机鱼肉时间纸单词变化经历作品;著作房间练习;习题生命;一生鱼倍数;次数论文;试卷如: 1) Word came that he was admitted in Tsing Hua university. 消息传来他考上了清华大学. 注: word当消息讲时,前不需加冠词. 2) You should do more exercise. Dont always sit at the desk, doing exercises. 你应该多做锻炼.不要老是坐在桌子旁, 做习题2.有些物质名词表示具体东西时,可以视为可数名词.如: a glass (一个玻璃杯) a rubber (一块橡皮) an iron (一把熨斗) woods (树林) waters (水域) sands (沙滩) grasses (草地)如: Some cows are feeding on grasses, eating grass. 牛在草地上吃草.3. 抽象名词表示种类时,可转化为可数名词1) -Does the medicine have effect on you?-Yes, it has a good effect(一种好的效果) on me. 2) It doesnt need effort. Their efforts (各种努力 )were in vain.4. 有些抽象名词当表示具体的人或物,可视为可数名词.这些抽象名词有: pleasure(愉快), honor(荣誉), shame(羞愧), disappointment(失望), pity(遗憾), success(成功), failure(失败), danger(危险), help(帮助)等.如: The meeting is a success.What a pleasant surprise he bought us.5.有些抽象名词表示 “一份一顿一阵一场等”时,可转化为可数名词.如: three coffees (三份咖啡)a good supper a heavy rainsnowstorm a strong wind 6. 有些不可数名词当表示程度 (一点;一些;某部分内容)时, 常用aan 修饰.如:a knowledge of English (懂点英语)an understanding of law (懂点法律)a history of 20 yearsa time of 3 yearsa population of 500 milliona lengthdistance of 50 meters还要注意一些永远不可数的名词:news(消息;新闻) inform