1.face the music 直面困难
He knew he'd never get away with it so he decided to face the music and give himself up to the police.他知道自己不可能逃脱，因此决定一人做事一人当——向警察自首。
2.face up to 勇敢地面对某事
You must learn to face up to your responsibilities. 你必须要学会正面你的责任。
3.fed up 厌倦
I am rather fed up with your complaints. 我厌倦了你的抱怨。
4.feel free to do something 不要拘束
Please feel free to make suggestions.随便提你的建议吧。
5.few and far between 很少，稀少
Human beings are few and far between in this zone. 这里人烟稀少（人迹罕至）
6.French leave 不辞而别
