전치사 at

1. 여러개중 하나를 찍는 느낌

• why are you staring at me?
• Don't shout at me!
• She is laughing at me.
• A boy thew an egg at me.
• This book is aimed at begginers.

2. 어떤 순간에 뭔가를 보는 순간 혹은 듣는 순간에 놀라는 느낌. 덧붙여 시간을 알려주는 한 점. 그 점을 겨냥하는 의미

• I was disappointed at the news.
• Everyone was surprised at his sword.
• I was shocked at her sudden death.
• I was frightened at his fluent chinese.
• I am always busy at that time of year.