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