be sure of / be surprised by / at

• be sure of ~에 확신을 가지다. ~ 을 믿다. 확실하다

 

The girl was sure of which puppy she wanted.

Willy was sure of his answer.

She isn't sure of the time of the party.

Are you sure Rita wants the green shirt?

> I'm sure of it. Yesterday she told me she wanted it.

 

• be surprised by / at ~에 놀란

 

She was surprised by her son's new hairstyle.

Mr.Scrooge was surprised by the ghost.

Nancy Drew was surprised at the noise.

I'm surprised by Nick's kindness theses days.

> Me too. Last year he was a very mean boy.

 

• mean  라는 뜻[의미]이다, …을 뜻하다[의미하다]  /  인색한 (↔generous) (→stingy)  인색한, 쩨쩨한