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

283. in the eyes of in one’s eyes ( = in the judgment of ) 在某人看来, 在某人眼里 284. on the face of it (=judging by what one can see) 表面看来

285. in the face of 面对着(困难等情况)

286. in one’s face当着某人的面; face to faced面对面; face up to 大胆面向 287. fail in (=be unsuccessful in) 失败

288. in good faith(=honestly, sincerely) 真诚地

289. keep faith with 对…守信用

290. lose faith in 对…失去信心

291. on faith 毫无怀疑地, 依赖地

292. faithful to (=loyal to) 对…忠诚

293. fall into the habit (of) 养成…习惯

294. fall short of (=fail to reach a desired result, standard, etc.) 没达到, 低于 295. familiar with 熟悉,了解

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

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

298. by far 远, 非常 (与比较级或最高级连用)

299. far from 远远不是

300. far from 非但不…(而且)

301. in fashion(=stylish, most modern)时兴,流行

302. after the fashion (of) 依照…

303. find fault with(=complain about; criticize)找毛病，对…吹毛求疵

304. at fault (=in the wrong, blamable)有错

305. in favour of 赞成

306. be in favour with 受宠, 受偏爱;

out of favour with 失宠, 不受宠

307. in one’s favour(=to one’s advantage)对.有利

308. (be) favourable to(=advantageous)有利的

309. fear for (=be afraid for the safety of sb. or sth.) 为…担心

310. for fear of (=in case of; because of anxiety about) 以防, 由于怕

311. in fear of (=afraid for the safety of) 担心

312. feed (sb.) on sth. 靠吃…, 用…喂养

313. be fed up with(=be unhappy, tired about sth. dull) 厌烦, 腻了

314. feel like (=have a desire for) 想要

315. fill in 填写

316. fill out ( =fill in )填写

317. set the world on fire=set the flames on fire(=do sth. remarkable)有突出成就

318. play with fire (=take great risks)干冒险事

319. set sth. on fire(=set fire to sth.)使..着火,放火

320. at first sight(=when first seen)乍一看,一见

321. for the first time 第一次 (作状语)