我要一杯水。
Wǒ yào yì bēi shuǐ.
I want one cup of water.
你想喝茶还是喝水?
Nǐ xiǎng hē chá háishi hē shuǐ?
Do you want to drink tea or water?
多喝点水吧!
Duō hē diǎn shuǐ ba!
Drink more water!