恍然大悟的用法和样例：
例句
-
我不知道汤姆爱上了玛丽，但当我看到他看她的神色时，我才恍然大悟。
I hadn't realized that Tom was in love with Mary, but when I saw how he looked at her the penny finally dropped. -
她的笑话使我们一下子恍然大悟，于是我们哈哈大笑。
Her joke suddenly clicked with us and we all laughed. -
我恍然大悟:他一直在撒谎。
Then the scales fell from my eyes: he had been lying all the time.
