281. in the twinkling of an eye 一眨眼,轉眼間

　　282. keep an eye on(=keep a watch on)照看,監視

　　283. in the eyes of in one’s eyes ( = in the judgment of ) 在某人看來, 在某人眼里

　　284. on the face of it (=judging by what one can see) 表面看來

　　285. in the face of 面對著(困難等情況)

　　286. in one’s face當著某人的面; face to faced面對面; face up to 大膽面向

　　287. fail in (=be unsuccessful in) 失敗

　　288. in good faith(=honestly, sincerely) 真誠地

　　289. keep faith with 對…守信用

　　290. lose faith in 對…失去信心

　　291. on faith 毫無懷疑地, 依賴地

　　292. faithful to (=loyal to) 對…忠誠

　　293. fall into the habit (of) 養成…習慣

　　294. fall short of (=fail to reach a desired result, standard, etc.) 沒達到, 低于

　　295. familiar with 熟悉,了解

　　296. have a fancy for ( =like sth. without the help of reason) (沒有道理地)喜歡, 想要

　　297. take a fancy to (=become fond of) 喜歡

　　298. by far 遠, 非常 (與比較級或最高級連用)

　　299. far from 遠遠不是

　　300. far from 非但不…(而且)