有么人知道: you are a thunderbolt to me 这句话的准确意思?

thunderbolt: [ 'θʌndəbəʊlt ]

n. 雷电,霹雳

例句与用法:
1. The news of his death was a real thunderbolt.
他去世的消息真是晴天霹雳。

2. The unexpected defeat came as a thunderbolt.
这意外的失败犹如晴天霹雳。

3. He unleashed a thunderbolt by announcinghis resignation.
他宣布辞职好似晴天炸雷一般.

4. The news came upon me like a thunderbolt.
那个消息对我来说简直是晴天霹雳。

贬义的吧