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一、 名词

英文中的名词分为普通名词和专有名词两大类。其中专有名词是指具体人物,如:Tom; 事物,如:book; 地点,如:Europe; 机构, 如:United Nations; 或国家地区的名称,如: China, Asia。这种名词只能靠记忆,或在工作学习中多次遇到后不断加深记忆。因为它们是公认的名称,所以不能随意变动。相比之下,比较复杂的是普通名词,它分为可数名词、不可数名词两类,而其中每一类又分为具体名词和抽象名词两种。如下:
名词 普通名词 可数名词 具体名词: toy, book
抽象名词: difficulty
不可数名词 具体名词: butter, water
抽象名词: music, work.
专有名词 Paris Europe

而有些语法书则有不同的名词分类方法:

名词 可数名词 普通名词: man dog desk.
集合名词: people family.
不可数名词 物质名词:water air.
抽象名词:truth peace.
专有名词:Paris Europe.

需要指出的是,可数、不可数是英文名词与中文名词的一个重要差异--即学习的重点。很多英语名词具有双重性。例如country 作为国家讲时是可数名词,我们可以讲a country,two countries;但作为乡村讲时则只能用the country, 如:We lived in the city, but my grandfather lived in the country.而有些具有双重性的词意思不变,但其数量则有不同,如hair作为毛发的总称不可数,如:Her ears were covered with hair 而作为几根,几缕时则成为可数名词,如:I found several gray hairs on my father's head. 又如experience作为经验一词的集合词来讲,是不可数名词,如:He hasn't had much experience 而作为不同的各种各样的经历一词时它又成为可数名词,如:He had several good experiences.

名词的主要作用如表1-1:

表1-1名词的主要作用

功用 例句
主语 My family is now in New York.
表语 His father is a scientist.
宾语 We love our great motherland.
宾语补足语 He made London the base for his work.
定语 The girls are making paper flowers.
状语 The car cost him 1000 dollars.
同位语 Mr Brown, a famous scientist, will come here.