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，
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
想要