268. come into existence (=begin to exist)开始存在;come into use开始使用;come into effect开始运转;come into fashion开始时新;come into action开始行动;come into power开始执政;come into sight进入视野;come into blossom开花;
269.(be) in existence存在come into existence出现
270.expect……of在……期望……
271.at the expense of在损害……情况下，以……为牺牲
272.expose...to...使暴露于……，使……受(危险，风险)
273.be exposed to...面临……，受到……
274.beyond expression (= in a manner that cannot be expressed)无法形容，说不出的
275.give expression to表达，表现
find expression in表现
276.to...extent在……程度上
277.in the extreme (=extremely)极其
278.look sb. in the eye正视，打量(某人)
279.close (shut) one’s eyes to不理会，视而不见
280.in one’s mind’s eye在心目中，在想象中
281.in the twinkling of an eye一眨眼，转眼间
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)
322.in the first place首先，第一
323.fit into刚好放入
324.fit in with (=suit, fall into agreement)合适，相配，一致
325.(be) fit for (=right and suitable for)适合
326.focus on (=concentrate on)集中在……上
focus sth. on把……集中在……上
327.be fond of喜欢
328.(be) in force有效，实施
329.go into force开始生效
330.by force靠武力，强行
331.force...on把……强加给……
332.in the form of以……形式
333.be fortunate in幸运，有好运气
334.free of charge免费
335.be freed from免受，没有……
336.in front of在……前面
in the front of在……前部
337.furnish...with (=supply)向……提供
338.in general (=in most cases, usually)通常
339.catch (or get) a glimpse of瞥见(强调结果)
take a glance (or look) at看……眼(强调动作)
340.be good for对……有好处;对……有作用
be good at擅长于;be good to对……好
341.in good time (=early)早早地(做完，到达等)
342.for good (=for ever)永远地，长期地
343.take...for granted (=assume to be true)把……认为理所当然的
344.be grateful to sb. for sth.因……感谢某人
345.on the ground(s) of (=because of) 由于……
346.fall to the ground(计划，希望等)失败，落空
347.on one’s guard (against) 谨防，警惕
(be)on guard站岗
348.guard against (=defend，keep safe) 警惕,防止guard...against警卫……防止
349.guess at猜，估计
350.by guess靠猜