Цитирай Първоначално написано от Анонимко
И двамата сте много зле.
Първия пример:Until you've gone, I eat all pizza -> While you were gone, I ate all the pizza.

Втория пример:She learnt to play the piano until she was nine years old. Then suddenly and without warning, she quit -> She learnt to play the piano when she was nine years old. Then suddenly and without warning, she quit.

Ако искаш да кажеш, на 9 вече е можела да свири на пиано трябва да кажеш When she was nine years old she could already play the piano.

А моя пример е At 12 starts my favourite show.Until that i am watching cartoons.
Еми ако може и аз да внеса една поправка:
At 12 starts my favourite show. Until then i am watching cartoons.