In Noun phrases^x, Countable or uncountable^x

Hello Infinity. I'm a mere English learner from Japan, but could you allow me to throw my 2 cents on your question? Frankly speaking, I'd say you'd better give up the hope you could get a conclusive answer to the question. I have raised a similar question before in this forum but I could...

For instance, "I don't have time to do this." Here, the noun "time" is uncountable. "I had a great time." In this case, is the noun in the noun phrase "a great time" countable? IS there any systematic way to explain the concept behind this? According to several grammar books I looked into,...

I need to hand in this exercise but I'm not sure about the analysis nor the grammar. If you could have a look at eat I would be really grateful! thank you all! Explain the use of Generic Noun Phrases (or Noun Groups) in English by analyzing the examples. There are several linguistic...