I would like to drink a cup of water.的语法分析?

不用分析的那么死，would like to do sth.想要做某事，这个在口语里是常用语句，一般I would like...或者I'd like...
后面的a cup of没什么好说的吧，固定用法。

Would like 没有（过去，现在，未来）时态。意志，愿望。

to drink 不定式做概念，也无时态

有何语法可言？
I would like to,一个固定结构，a cup of 一杯。water 不可数名词。不加S

你好！句子的意思为：我想要喝一杯水，固定句型：sb would like to do sth，某人想要做某事，主语是I,谓语是would like ，而drink a cup of water是不定式结构，宾语是a cup of water。

i'd like to try it, but my english is terrible.
i is subject. would like to drink is verb. a cup of tea is object.