Learn Italian: Quanti cambiamenti vedremo? Ne vedremo tre. - How many changes will we see? We will see three of them.

Vedere (to see) is an irregular verb in the future tense. Instead of just dropping the final -e to get the stem, it drops the first -e- as well, becoming vedr-. Then you add the standard noi future ending -emo to get vedremo (we will see). Verbs like andare, dovere, and potere follow this same stem-dropping pattern!

Why do we need the word Ne in the second sentence? Can we just say Vedremo tre?

In Italian, when you state a quantity of something already mentioned (like three changes), you usually must use the pronoun ne (of it / of them). You cannot leave the number hanging by itself like you can in English. So, Ne vedremo tre literally translates to 'Of them we will see three.'

Why is it Quanti instead of Quanto?

Quanto (how much / how many) acts as an adjective here, which means it must agree with the noun it modifies. Because cambiamenti (changes) is a masculine plural noun, quanto changes to its masculine plural form, quanti.

The word cambiamenti looks a bit like an adverb. Is it?