从释义，用法，使用环境，形象和影响范围五个维度分析be surprised at和be surprised to的区别，详细内容如下。
1. 释义区别：
- "Be surprised at" 表示对某事感到惊讶或出乎意料。
- "Be surprised to" 表示对某事感到惊讶或感到意外的动作或状态。
例句：
- I was surprised at her sudden announcement. (她突然的宣布让我感到惊讶。)
- I was surprised to hear that he won the competition. (听说他赢得了比赛，我感到惊讶。)
2. 用法区别：
- "Be surprised at" 用于描述被某事或某人所惊讶或出乎意料的情感反应。
- "Be surprised to" 用于描述某人对某事感到惊讶或感到意外的动作或状态。
例句：
- He was surprised at the extravagant price of the luxury car. (他对奢侈汽车的高价感到惊讶。)
- She was surprised to find out that she had won the lottery. (她发现自己中了彩票感到非常意外。)
3. 使用环境区别：
- "Be surprised at" 可以用于描述对任何事物、事件或行为感到惊讶的情况。
- "Be surprised to" 常用于描述对某个特定事实、消息或意外情况感到惊讶。
例句：
- They were surprised at the beautiful scenery they encountered during their hike. (他们在徒步旅行中遇到的美丽风景让他们感到惊讶。)
- I was surprised to see my childhood friend at the party. (在派对上见到我的童年朋友让我感到惊讶。)
4. 形象区别：
- "Be surprised at" 传达出在某个事物或情况面前感到吃惊或惊奇的形象。
- "Be surprised to" 传达出对某个特定事实或情况感到出乎意料或意外的形象。
例句：
- They were surprised at the size of the elephant in the zoo. (他们对动物园里大象的体积感到惊讶。)
- I was surprised to see her in a completely different hairstyle. (看到她换了一种完全不同的发型，我感到非常惊讶。)
5. 影响范围区别：
- "Be surprised at" 着重于描述对某种具体事物或情况感到惊讶的范围。
- "Be surprised to" 着重于个人对某个特定事实或情况感到惊讶的范围。
例句：
- They were surprised at the news of their favorite band's breakup. (得知他们最喜欢的乐队分手的消息，他们感到惊讶。)
- I was surprised to find out that she could speak fluent French. (发现她能流利地说法语，我感到非常惊讶。)