JLPT N5

～なくちゃいけない

Must do, have to do

Structure

Verb ない-form (drop ない) + なくちゃいけない

Used to express obligation or necessity in informal conversations. It conveys that an action must be performed.

宿題をしなくちゃいけない。

I have to do my homework.

Using it in formal situations; forgetting to conjugate the verb to the ない-form.

Think of it as a casual contraction of 'nakute wa ikenai' (なくてはいけない).

Import an article and tap any sentence using it. The explanation comes back about the sentence in front of you, not a textbook example.