1专有名词，物质名词，抽象名词，人名地名等名词前Beijing University, Jack, China, love, air
2名词前有this, my, whose, some, no, each, every等限制I want this book, not that one. / Whose purse is this?
3◆季节，月份，星期，节假日，一日三餐前March, Sunday, National Day, spring 但the Spring Festival
4◆表示职位，身份，头衔的名词前Lincoln was made President of America.
5◆学科，语言，球类，棋类名词前He likes playing football/chess.
6◆与by连用表示交通工具的名词前by train, by air, by land
7以and连接的两个相对的名词并用时husband and wife, knife and fork, day and night
8 表示泛指的复数名词前Horses are useful animals.
不可数名词的具体化用作可数名词cloth(布料—不可数)与a table cloth(桌布);beer (啤酒)与a beer(一杯啤酒);glass(玻璃)与a looking glass(镜子)
in charge of / in the charge of; in case of / in the case of;
in front of / in the front of; out of question / out of the question