E
41. enjoy oneself 玩得痛快，过得快乐
F
42. fall in love with 爱上
43. fall asleep 睡着，入睡
44. fall behind 落后
45. fall down 倒下，跌倒
46. fall into 掉进……里
47. fall off 从……掉下来
48. feed on 以……为食
49. feel like doing sth. 想做某事
50. find out 发现，查明(真相)
51. fly a kite/kites 放风筝