Questions about example sentences with, and the definition and usage of "Gotten"

A: It is a perfect tense conjugation of the verb "to get". You need to use "have/had" before it. Example:
"I have gotten a new car."

A: It's a form of the verb "to get".

I get the box. (Present)
I got the box. (Past)
I have gotten the box (perfect).

However, standard British English doesn't use it like this. They would just say "I have got the box".

"Gotten" sounds American, though they also say it in Ireland and some parts of the UK.

A: I have gotten a few things while shopping

A: ‘I haven’t gotten far’
‘I have forgotten’
‘You haven’t gotten anything?’
‘You have gotten a new hairstyle’

A: Amy had just gotten home from work.
I hadn't gotten the present I wanted.

A: In Britain, the past participle of "get" is "got".

In America, "get" has two past participles - "got" and "gotten".

A: How most people say it. The T’s are pronounced really soft