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