今天我们要讲的习惯用语都包含fit这个词。这个词虽然短小，但是作用却不小。它既可以当形容词，也可以当动词或者名词。它当形容词的时候有好几种解释，最常见的意思是“适合的”、“恰当的”。
在我们要学的第一个习惯用语fit to be tied里，fit就是这个意思。这个习惯用语引申为“暴跳如雷”。
例1：I have to be awfully careful today. My parents were fit to be tied last night when I came home after midnight.
我今天可得加倍小心。我昨晚半夜以后才回家，进门时我爸妈简直气疯了。
Fit做形容词时，还可以表示“健康的”。在习惯用语fit and trim里，fit就是这个意思。
例2：My friend Tom was quite overweight. But he has been on a diet and never touches the junk food he used to love. And what is more, he has been doing regular exercises and running ten miles each morning ever since he joined a health club. Now he has lost 30 pounds and is looking very fit and trim.
我的朋友汤姆以前很胖。但是他坚持节制饮食而且戒了以前好吃零食的习惯。另外，他参加健身俱乐部以后每天锻炼，早上还坚持长跑十英里。如今他体重减了30磅，看起来健康而匀称。
第三个习惯用语是: fit to a T。它是个相当古老的习惯用语，表示“恰到好处”。
例3：The roast turkey was cooked fit to a T. We were amazed - Mary's such a hard-working business executive that we never thought she could make such a good meal.
玛丽把火鸡烤得恰到好处，我们都大为吃惊。她是一位公司主管，工作很努力，我们从没想到她这么会做饭。
我们再来学个习惯用语: fit for a king。不用想都知道，帝王的生活有多养尊处优、安逸奢华，所以fit for a king用来描绘享受和待遇是“极尽奢华的”。
