milk is uncountable but when uncountable nouns is placed in a countable container then it becomes countable . So , when i use a glass of milk it becomes countable but either it is singular or not please help me. Also help me either two glasses of milk is singular or plural countable and which verb it will take .
The subject you are asking about is "glass" versus "glasses". "of milk" is just a prepositional phrase.
A glass is here.
Two glasses are here.
Adding in prepositional phrases doesn't change the verb, because they're not the subject.
A glass of milk is here.
Two glasses of warm milk are here.
I drank a glass of milk.
I drank two glasses of milk.
Both are correct.