a piece of cake / as easy as pie 容易的事
1. apple of one’s eye宠爱之人（物）；掌上明珠
2. to go bananas发疯；神经错乱
3. good banana好的喜剧演员
4. to bring home the bacon 获得成功；维持家庭生计
5. to spill the beans 泄露秘密
6. be full of beans 精力旺盛；充满活力
7. have beefs about sth. 对……很不满
8. a bone to pick 争端；不满
9. I live on bread and water at school. 我在学校时过着粗茶淡饭的生活。
10. one’s daily bread / one’s bread and butter 生计；生活必需品
11. out of bread 失业
12. to butter up阿谀奉承
13. butter finger 抓不稳东西的人
14. a cabbage经常用来形容对一切漠不关心的人，如I don’t like to make friends with him, because he is a cabbage.
15. a cake walk易事
16. to sell like hot cakes销路很好
17. as different as chalk and cheese 完全不同
18. to have two bites at the cherry 得到第二次机会做某事
19. a chicken经常用来形容胆小鬼，如Jim is really a chicken. He is afraid to go out at night himself.
20. as cool as a cucumber泰然自若；极为冷静
21. a bad egg 坏蛋
22. to put all one’s eggs into one basket 孤注一掷
23. egg on (one’s) face 尴尬；羞辱
24. a cold fish经常用来形容冷漠的人，如My neighbor is a cold fish.
25. no real meat形容没有真正有价值的内容
26. cry over spilled milk 覆水难收；木已成舟，哭也无用
27. to use one’s noodle动动脑筋
28. in a nutshell 简言之；简要地说
29. The young man knows his onions. 这个小伙子精明能干。
30. alike as two peas in a pod 一模一样
31. a piece of cake / as easy as pie容易的事；小菜一碟
32. have a finger in the pie 干预某事；参与某事
33. to eat humble pie 忍辱含垢；忍气吞声
34. pie in the sky空想，不能实现的愿望或诺言
35. a big potato / a big cheese重要人物；领导；老板
36. a small potato 小人物，没什么了不起
37. a hot potato / a tough nut难对付的人；棘手的事
38. mouse potato “电脑迷”：指那些足不出户、整天手握“mouse(鼠标)”的人
39. couch potato终日懒散的人；花过多时间坐着或躺着的人，通常是为看电视
40. in the soup / in the hot water / in a jam 陷于困境
参考资料：http://qkzz.net/article/b975e0c0-f25d-43dd-99cf-e269552d0ad4.htm