Be supposed to

be supposed to (원래) ~ 하기로 되어 있어/~해야 해 (꼭 지켜진다는 보장은 없음. 변동 가능성이 있다)

be going to 실천하고 싶은 의지가 있고 실제 일어날 가능성이 높음.

I'm supposed to meet my friend.

 

It's supposed to rain today. 오늘 비온다고 하더라.

It's supposed to snow today.

It's supposed to be hot today.

 

You're not supposed to do that. 그렇게 하면 안되잖아.

I was supposed to hang out with my friends. 원래는 친구를 만나기로 했었는데 안만났아.

I was supposed to study English, but I was too busy. 원래 영어 공부를 하려고 했는데 바빴어.

 

Where am I supposed to go? 어디로 가야하는거야? (어쩌라는 거야)

What am I supposed to do? 뭘 해야하는 거야?

What's that supposed to mean? 그게 무슨말이야?