I. EXAMPLES: Don’t tell him the bad news until he finishes his exam. 不要告诉他坏消息，直到他考完试。 The secret was not discovered until he was dead. 这个秘密直到他去世才被发现。 I won’t stop shouting until you let me go. 直到你放我走，我才会停止大喊。 II. DIALOGUES: A: I heard that Bill got divorced. A：我听说比尔离婚了。 B: Yes, he is really sad now. B：是的，他现在真的很伤心。 A: I thought he wanted to get divorced because he didn’t love his wife anymore. A：我以为他想离婚是因为他不再爱他的妻子了。 B: Yes, but he didn’t realize how much he needed her until they got divorced. B：是的，但他直到离婚后才意识到自己有多需要她。 A: Yeah. Well now it’s too late. She already has another husband. A：是啊，现在太晚了。她已经有了另一个丈夫。 B: That’s too bad. Sometimes people often don’t appreciate what they have until they lose it. B：那真是太遗憾了。有时候人们往往直到失去了才懂得珍惜。