1、get a kick out of doing something
He gets a kick out of racing.
2、take kindly to something/someone 愿意接受
Don't you feel that people in the lab don't take kindly to a nosy reporter?
3、kill someone with kindness 好得让人受不了
The old lady almost killed me with kindness when I lived at her home.
4、parade one's knowledge 买弄学问
He is a well-learned man, bit he never parades his knowledge.
5、be at large 逍遥法外（也可以形容动物不受约束）
The murderer was still at large. The victim's parents was determined to find enough evidence to sue him to court.
6、rest on one's laurels 故步自封，吃老本
You are sure to be lagged behind if you rest on your laurels.
7、turn over a new leaf 洗心革面
The juvenile delinquent promised that he would turn over a new leaf if he could be given lenient punishment.
8、have a hollow leg （喝酒）海量
The best man has a hollow leg. He drinks a lot instead of the bridegroom.
9、pull someone's leg 开某人的玩笑
Never ever pull his leg. He is a man without a sense of humor. He takes everything seriously.
10、keep someone at arm's length 与某人保持距离
My boss is my uncle. In order to avoid unnecessary misunderstanding, I'd better keep him at arm's length in company.
11、let someone down 使某人失望
Joe really let me down by having broken his promises for several times.
12、can't for the life of one 怎么……也不行
I thought I could recite my speech backwards, but when I stood in front of the audience, I couldn't for the life of me remember what to say.
13、air one's linen in public 家丑外扬
The wife was often beaten by her husband, but she never told others. She didn't want to air her linen in public.
14、shoot from the hip 信口开河
Don't take Jay's words to heart. He shouldn't have shot from the hip.
15、by hook or by crook 千方百计得，不择手段得
He rose to that position by hook or by crook.
16、blow hot and cold 出尔反尔，喜怒无常
Do you think he'll support you? He is the type who blows hot and cold.
17、make it hot for... 刁难某人
Out section manager is a woman. Our general manager always looks down upon her and makes everything hot for her.
18、have the lots for someone 迷恋某人
You have to stop her. She has the lots for a married man.
19、bring down the house 博得满堂喝彩
The first-prize winner of the speech contest has brought down the house for several times.
20、be over the hump 已度过难关
The Asian financial crises has almost paralyzed Asian economy. But we are over the hump now.