Why can I use "much" in a sentence like:
Much has changed here recently.
I've seen a lot in the literature about "nothing/not much" being used, but not without negation or in interrogatives.
Why can I use "much" in a sentence like:
Much has changed here recently.
I've seen a lot in the literature about "nothing/not much" being used, but not without negation or in interrogatives.
Looking at the Oxford English Dictionary, 'much' has many possible functions in a sentence. In the usage in the question, it would be a pronoun - substituting a noun phrase. One of its many definitions in the OED is C. 1a:
"A great deal, a great quantity"
E.g. "Much is due to the prejudices of well-meaning but uncultured people." or "Much has been done in the way of improving the Schizanthus"
So to answer the question: yes, you can use it as you do in that sentence. However, both the OED and the experts from the Cambridge Dictionary state that it is used more in negative phrases.
"Much" is a degree determiner which typically occurs in NPs with non-count nouns, as in I don't have much money where "much" is determiner and "money" is head of the NP. But in your example, it's a special kind of 'fused determiner-head' construction where fused-head "much" has an inanimate, abstract interpretation.
I think this is an example of language changing by common usage. "Much has changed' is something I have heard, usually on TV. It probably should be, "So much has changed."
It is similar to, "It's me." While I was growing up, a teacher would have refused this as incorrect and today, no one notices. When was the last time you heard, "It is I."?
This usage is correct. Much can be used as a noun:
You have much to learn.
or as an adjective:
There was much fanfare for their arrival.