Phrasal Verb: Brush Up On
to improve a skill
Examples
- Brush up on your French.
Key rules
- Brush up on means improve a skill or knowledge you already have
- It is inseparable: brush up on your French
- The object follows "on" directly
- It is used when refreshing study
Common mistakes
- Brush up your French โ Brush up on your French
๐ก Tip: "Brush up" alone is also correct when the object is understood.