用于姓氏的复数形式前，表示一家人或夫妇俩。

　　The Lius have moved to Guangzhou.

　　The Simths came to China for visit in 1996.

　　不可数名词前面通常不加定冠词，但若有限制性定语修饰，或表示特定部分、特定内容时，前面需加定冠词。

　　Drink some water.

　　Is the water in the well fit for drink?

　　What do you think of the music?

　　He cant take the advice his mother gives him

　　不加冠词的基本规则

　　季节、月份、日期前一般不加冠词。

　　If winter comes can spring be far behind?

　　We have few classes on Sunday.

　　10.1 is National Day.

　　表示球类、棋类、三顿饭的名词前通常不加冠词，但乐器前需加定冠词。

　　What did you have for lunch?

　　Dinner is ready.

　　Lets go and watch them play chess.

　　My elder brother likes to play football.

　　The boys are learnig to play the guitar.

　　play the piano

　　play the violin