I have some question about noun phrases in the examples:
There is so much about languages I would like to understand.
--> Is 'so much about languages I would like to understand' a noun phrase?
Jack has played the guitar for more than five months.
--> Is 'more than five months' a noun phrase (as part of a prepositional phrase?) And if yes, is 'more' or 'months' the head of the noun phrase?
With my sister playing the piano all the time, it's hard to focus on my homework.
--> Is 'my sister playing the piano all the time' a NP or a non-finite adverbial clause?
I've spent a long time thinking about these sentences and now I'm really confused.
Thanks for your help!