I don't know if/Is it okay if/Do you mind if/I'm afraid that/It is likely that

~인지 / 일지 모르겠어 I don't know if ~

I don't know if I'm a geinus.

I don't know if I'm stupid.

I don't know if the test is today.

I don't know if it's going to rain. 

I don't know if I'm a man.

~해도 될까요? Is it okay if ~?

Is it okay if I tell the truth?

Is it okay if I have this food?

Is it okay if I play a game?

Is it okay if I ask you a question?

Is it okay if I go to bed now?

~해도 될까? Do you mind if ~?

Do you mind if I watch the TV?

Do you mind if you give me water?

Do you mind if I get you a gift?

Do you mind if I raise pets?

Do you mind if I shout?

유감스럽지만~ I'm afraid that ~

I'm afraid that I fail my business.

I'm afraid that you hurt.

I'm afraid that I can see you again.

I'm afraid that I can not make it.

I'm afraid that I don't like you.

~일 것 같다 / ~할 가능성이 있다 It is likely that ~

It is likely that I win first place.

It is likely that I'll be last.

It is likely that he tells a lie.

It is likely that she is rich.

It is likely that this money belongs to me.