jungyohan pyohyeoneun memohae duseyo.

Please write down the important expressions.

Breakdown of jungyohan pyohyeoneun memohae duseyo.

• ~은: topic particle
• 표현: expression
• 중요하다: important
• ~세요: please (polite imperative)

Questions & Answers about jungyohan pyohyeoneun memohae duseyo.

How is 중요한 formed, and why doesn’t it end in -다?

중요한 comes from the descriptive verb 중요하다, which means to be important.

When a descriptive verb modifies a noun, Korean uses an attributive form. For 중요하다, that form is 중요한.

• 중요하다 = to be important
• 중요한 표현 = an important expression / important expressions

So here, 중요한 is directly describing 표현.

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Why is it 표현은 instead of 표현을?

This is a very common question. In this sentence, 은 is the topic particle, not the object particle.

• 표현을 메모해 두세요 would simply mean Please make a note of the expressions
• 표현은 메모해 두세요 gives the sense of As for the important expressions, make sure you note them down

Using 은 adds emphasis or contrast. It can suggest something like:

• at least the important expressions
• when it comes to important expressions, note them down
• important expressions, make sure you write those down

So 은 here is not random—it gives a slightly stronger, more pointed feeling.

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Is 표현 singular or plural here?