不可数名词前是不是都要加the

特指时,不可数名词前可加定冠词the。
定冠词the的用法
① 表示上文提到过的人或事物。
如：He bought an English-Chinese dictionary this morning. The dictionary is very good.
② 用于单数可数名词前，表示整体或类别。
如：The panda is a rare animal.
此句等于：A panda is a rare animal. = Pandas are rare animals.
③ 用来表示世界上独一无二的事物。
如：the sun, the moon, the sky, the earth, the world
④ 用于表示阶级、党派的名词前。
如：the Chinese Communist Party, the working class the proletariat 无产阶级
⑤ 常用于含有普通名词或形容词的专有名词前。
A. 用于许多江海，山脉，群岛等名词前：
The Yellow River The East Sea the Himalayas the Pacific Ocean
B. 用于由普通名词构成的国名：
The People's Republic of China the United States
C. 用于机关、团体、朝代、时代、报刊杂志等名词前：
the United Nations the State Council the Tang dynasty the People's Daily
the Summer Palace the Peace Hotel the British Museum
⑥ 用于表示方位的名词前。
如：the east the southwest the middle the Far East on the left
⑦ 用于乐器名词前，但汉语拼音的乐器前不用冠词。
如：play the piano play the violin play erhu
⑧ 用于复数的姓氏前，表示两夫妇或全家，在此情况下，这类名词作复数对待。
如：When we got there, the Lius were waiting for us.
The Smiths watch TV every day.
⑨ 用于某些形容词或过去分词前，表示一类人或事物。
如：the poor the rich the living the young
the wounded the oppressed the beautiful
⑩ 用在形容词的最高级前或序数词前。
如：Shanghai is the biggest city in china.
After the game, the first thing they wanted to do was to take a hot bath.

不是这样的，比如说我要喝水：“I WANT SOME WATER.”这里并不是用的the.

忘了