在英语中，如果你想要去喝水，你可以说 "I'm going to get a drink of water." 或者 "I'm going to drink some water."

这个短语的来源可能来自于人们在生活中常用的类似语句，比如 "I'm going to get a glass of water" 或者 "I'm going to drink a glass of water."

下面是一些例句，其中包含 "I'm going to get a drink of water" 或者 "I'm going to drink some water" 这个短语：

"I'm thirsty. I'm going to get a drink of water." (我渴了。我要去喝一杯水。)
"I've been exercising for an hour. I'm going to drink some water to rehydrate." (我已经锻炼了一个小时。我要喝些水补充水分。)
"It's hot outside. I'm going to get a drink of water before we start our hike." (外面很热。我们开始徒步旅行前我要先喝一杯水。)