This page https://www.lawlessfrench.com/grammar/adverbs/ says that adverbs "may modify verbs, adjective, prepositions, or other adverbs".
It lists some the following words under the category of "Adverbs of Quantity": beaucoup (a lot), très (very), trop (too much).
It's true that I am able to think of sentences where these words clearly modify a verb, or adjective or another adverb:
- I eat a lot. ("a lot" is modifying a verb)
- I run very fast ("very" is modifying the adverb "fast")
- I eat too much. ("too much" is modifying a verb).
But if I click the "Adverbs of Quantity" link, I see other Adverbs of Quantity words that really look like they modify a noun. An example is "un verre de".
- J'ai bu un verre de vin.
In this case, isn't "un verre de" modifying the noun "vin"? If so, is it indeed true that adverbs can modify nouns? (and if so, what makes "une verre de" an adverb, instead of an adjective?")