First notebook entry: Introducing myself

I learnt English in a bad way before. Therefore, I want to upgrade (or: improve) to a higher level.

KG

First notebook entry: Introducing myself

I learntEnglish so bad that I wantto upgrade it!

*Upgrade, improve, and "taking it to a higher level" are equal. Therefore, we can cancel one as redundant. We can't really say "improve it to a lower level". 

First notebook entry: Introducing myself

i learn English so bad,therefore i want to upgrade to high level

- I have learned english, but it is not good. Therefore I want to improve to a higher level of understanding