[考点归纳]名词可以分为可数名词和不可数名词。一般来说,可数名词表示能以数目计算的人或事物的名词,而不可数名词表示不能用数目计算的事物的名词。二者的主要区别是:1)可数名词有单、复数形式的变化,而不可数名词无复数形式。2)可数名词单数可直接与a,an连用,而不可数名词则 [Test sites are summarized] nouns can be divided into countable nouns and uncountable nouns. In general, countable nouns represent nouns of people or things that can be counted, and countable nouns represent nouns of things that cannot be counted. The main differences between the two are: 1) Countable nouns have variations in single and plural forms, while uncountable nouns do not have plural forms. 2) Countable nouns can be used directly with a, an and countless nouns can be used directly.