You don't need to

#. You don't need to ~

~할 필요가 없어.

 

You don't need to do all this work by yourself.

> I know. I'm just helping out because I have some time left.

Good for you. 너 좋은 일 하는 거야. 착하구나.

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You don't need to mop the floor. @ mop mɑːp 대걸레, 자루걸레 / 대걸레로 닦다

You don't need to study chapter 5 and 6.

You don't need to drive me all the way to my house.