精选优质文档-倾情为你奉上新概念英语第三册语法总结：冠词不定冠词：不定冠词a用来表示可数名词的单数形式，用于辅音音素前，an用于元音音素前。如：a person, a day, an hour, an old man.定冠词用法：1用于双方都知道的名词前：Please clean the classroom.2用于单数名词前，表示一类人或物：The horse is a useful animal.（马是有用的动物）This is a very hard job for the teacher.（对于老师这是一项很难的工作。）3用于世界上独一无二的东西前：the sun, the spring.4用于方位名词前：People in the west like coffee very much.5用于乐器名词前：play the violin6用于计量单位前： is sold by the .7形容词最高级和序数词前：This is the easiest way to work out the pro
