Today we are going to talk about the verb "brush up."

We use this verb when we want to review something that we have learned in the past, but that we might have forgotten such as a language.

Here is a sample sentence:

I am brushing up on my math skills for the GRE exam because I want to apply to graduate school.

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Brush up

• Meaning: This phrasal verb means to review something that you have learned in the past, but  that you have forgotten.

• Grammar: You cannot separate this phrasal verb. You must say "brush up on __x__"

• Examples: "I am going to brush up on my French skills before my trip to Paris next fall." or "I better brush up on my knowledge of pop culture before we play trivia."

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