Brush up on
Meaning: to improve your skills in something, to review
Example: I'm trying to brush up on my French before I go to Paris. You need to brush up on the tenses.
Π‘Π΅ΡΠΈΠ°Π»Ρ ΠΈ ΡΠΈΠ»ΡΠΌΡ Π½Π° Π°Π½Π³Π»ΠΈΠΉΡΠΊΠΎΠΌ Ρ ΡΡΠ±ΡΠΈΡΡΠ°ΠΌΠΈ. +1 ΠΠ΅ΡΡΡ Π² ΠΏΠΎΠ΄Π°ΡΠΎΠΊ π
Example: I'm trying to brush up on my French before I go to Paris. You need to brush up on the tenses.