초보자 1 - 조동사와 보조 동사

to be able to do somehing, make something, etc.

할 수 있다, 능력이 있다

used to say what is suitable, right, etc., particularly when one is disapproving of something

해야 한다, 해야

(auxiliary) used with the past participle form of a verb when forming the passive voice

있다, 되다

(auxiliary verb) used in forming interrogative and negative sentences

하다, 가지다

used to show that something is very important and needs to happen

해야 한다, 필수적이다