1.如果强调“听到”某事而激动,就用be excited at.如：He was very excited at the news.听说这个消息,他特别激动.
2.如果只想说什么事让某人激动,就用be excited about.如：I was excited about going to the zoo.去动物园令我兴奋.
3.about 既可以接something ,又可以接doing something ,他们在语法上是完全一样的.
4.be 强调状态；get 强调“变得”.如：He was very excited.他很激动.He got very excited.他变得很激动.