018. Not...until...
直到……才……

[句型解析]
“not...until...”是“直到……才……”，“until”后接时间状语。

[实例]
1. Don't tell him the bad news until he finishes his exam.
等他考试完了再告诉他这个坏消息。
2. The secret was not discovered until he was dead.
直到他死后这个秘密才被人发现。
3. I won't stop shouting until you let me go.
你让我走我才停止叫喊。

[实战练习]
A: I heard that Bill got divorced.
听说比尔离婚了。
B: Yes, he is really sad now.
是的，他现在很伤心。
A:I thought he wanted to get divorced because he didn't love his wife anymore.
我原以为他想离婚是因为他再也不爱他妻子了。
B: Yes, but he didn't realize how much he needed her until they got divorced.
是的。但离婚后他才发现有多需要她。
A: Yeah. Well now it’s too late. She already has another husband.
是啊。但现在太晚了。她已经有个老公了。
B: That's too bad. Sometimes people often don't appreciate what they have until they lose it.
真遗憾。人们总是在失去后才懂得珍惜。