Прошло несколько лет, с тех пор как

Прошло несколько лет, с тех пор как он начал изучать язык. Он сделал большие успехи и говорит теперь в два раза лучше, чем ты.

Результаты (английский) 1:

It's been a few years since he began to study the language. He made great strides and said now twice better than you.

Результаты (английский) 2:

It took several years, since he started to learn the language. He made great strides and now says two times better than you.

Результаты (английский) 3:

it's been a few years since he started to learn the language. he made great progress and is now twice as better than you.