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642 Noun
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可数名词与不可数名词：
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可数名词指那些可以分为个体的东西，因此可有复数形式，也可加不定冠词：
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They went for a walk in the garden．他们到花园里散步去了。
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They often went for walks in the gardens or parks．他们常常在花园或公园里散步。
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不可数名词所指东西不能分作个体，因此没有复数形式，不能加不定冠词：
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She is fond of music．她喜欢音乐。
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He is full of vitality．他充满活力。
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英语中有许多名词是不可数的，在汉语中却似乎是可数的，如：
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advice baggage equipment furniture homework information knowledge luggage machinery money music news traffic 一条消息 an item of news
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一件家具 a piece of furniture
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一项忠告 a piece of advice
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一件衣裳 an article of clothing
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在以这类词作主语时，后面要跟单数动词：
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Money doesn’t always bring happiness．金钱不一定总带来快乐。
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There was not much traffic on the roads yesterday．昨天公路上车不太多。
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No news is good news．没有消息是好消息。（谚语）
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有些不可数名词以-s结尾，特别是一些学科：
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acoustics aerobics aerodynamics aeronautics athletics classics economics electronics ethics genetics gymnastics linguistics logistics mathematics mechanics obstetrics physics politics statistics thermodynamics 有些疾病名称也以-s结尾：
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diabetes measles mumps rabies rickets shingles 以这类词作主语时，动词要用单数形式：
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Mathematics is a subject studied in nearly every school．数学是几乎每个学校都学的科目。
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Measles is in most cases a harmless illness．麻疹在多数情况下都是无害的病。
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Politics is much more difficult than physics．政治学比物理学难。
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但在一定情况也可跟复数动词：
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Politics have never interested me．政治活动我从来不感兴趣。
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