In an address to the UN, Greta Thunberg said: "Everything needs to change -- and it has to start today."
I was wondering, is 'need' a verb in this sentence? Or is 'change' the verb?
"To change" is an infinitive, used as a noun as the direct object of the transitive verb "needs".
What's to wonder?
The problem with need is it acts as a main verb sometimes, helping verb sometimes and as a noun sometimes.
Everything needs to change
You need not stay here
I am in need of your help
In sentence 1 need is a main verb , in 2 it is a helping verb and in 3 it is a noun