n. 钥匙, 键, 解答, 关键, 要害, 基调, 线索, 答案, 暗礁vt. 调音, 锁上, 提供线索vi. 使用钥匙【计】 键, 密钥【化】 键【医】 电钥, 栓体, 键【经】 关键, 要害; 主要的相关词组: have the key of the street in a minor key key up put the key under the door the key to all in the same key
1. 表示“……的钥匙”，其后用介词 to 或 of。如：
Is it the key of the safe? 那是开保险箱的吗?
Have you got the key to [of] the door? 你有这门的钥匙吗?
为了简洁起见，有时直接将名词放在 key之前作定语。如：
I’ve lost the car key. 我把小汽车的钥匙丢了。
其后可接不定式作定语。如：
Have you got a key to open this door? 你有开这扇门的钥匙吗?
2. 用于比喻义，表示“答案”“解答”“秘诀”“关键”等义时，一般只与介词 to 连用。如：
This is the key to world peace. 这是世界和平的关键。
The key to the grammar exercises is at the back of the book. 语法练习的答案在书后。
单词：key的近义词、反义词、形近词辨析
key/lock/unlock/answer/question/problem
记忆：
1. key [ ki: ] n. 钥匙, 关键, 解答, (打字机等的)键 Have you seen my key to the bedroom? 你看到我的卧室钥匙了吗？
2. lock [ lCk ] n. 锁 v. 锁, 锁上, 锁住 The room was always locked. No one knew what’s inside. 房间一直锁着的。没有人知道里面有什么。
3. unlock [ 5Qn5lCk] vt. 开...锁, 开启, 显露, 放开 Could you help me unlock the door? Both my hands are occupied. 你能帮我开一下门锁吗？我的双手都没空。
4. answer [ 5B:nsE ] n. 答案, 回答 v. 回答 The answer to the question is surprisingly simple. 问题的答案出奇的简单。
5. question [ 5kwestFEn ] n. 问题（要回答的）, 疑问 v. 询问 It’s out of the question. We can’t waste more time on it. 那离题了。我们不能在那上面浪费更多时间了。
6. problem [ 5prCblEm ] n. 问题（要解决的）, 难题 The government is doing what it can to solve those social problems.政府正在尽力解决那些社会问题。
另类阅读：
The case is locked in which the answer/key to the question is kept. If you have no key to unlock the case, can you think of a way to solve this problem?
与单词：key 相关的例句或者名人名言
Now I have my own key to my own house's front door - it feels so good!
我终于有了自己家门的钥匙，太棒了！
Exercise is the key to good health.
锻炼是保持健康的关键。
The young couple got their room key at the reception of the hotel.
这对年轻的夫妇在酒店前台拿到了房间钥匙。
When you vacate the room, you should hand over the door key to me.
