fail的词语用法是：v.(动词)fail的基本意思是“失败”,指在从事某项工作时未能达到预定的目的,常常强调做了,但是没有成功; 还可指由于某事未能在头脑里形成深刻的印象或其他原因而将某事“忘记”。fail引申可指“不足,短缺,缺乏”“衰退,衰弱”“破产”“辜负”等。fail的例句是用作不及物动词(vi.)We must hang together,or our plan will fail.我们必须齐心协力,否则我们的计划就会失败。fail过去式:failed；过去分词:failed；现在分词:failing；第三人称单数:fails。
一、详尽释义点此查看fail的详细内容
二、词典解释
1.失败;未能够;未做成
If youfail to do something that you were trying to do, you are unable to do it or do not succeed in doing it.
e.g. The Workers' Party failed to win a single governorship...
劳工党连一个州长职位也未能赢得。
e.g. He failed in his attempt to take control of the company...
他试图掌控公司，但以失败告终。
2.(活动、尝试、计划等)失败，不成功
If an activity, attempt, or planfails, it is not successful.
e.g. We tried to develop plans for them to get along, which all failed miserably...
我们试图计划让他们好好相处，但均以惨败告终。
e.g. He was afraid the revolution they had started wouldfail...
他担心他们发起的大变革会遭遇失败。
3.没有做，未做(应做的事)
If someone or somethingfails to do a particular thing that they should have done, they do not do it.
e.g. Some schoolsfail to set any homework...
有些学校没有布置任何作业。
e.g. He failed to file tax returns for 1982...
他没有呈报 1982 年的纳税申报单。
4.出故障;失灵
If somethingfails, it stops working properly, or does not do what it is supposed to do.
e.g. The lights mysteriously failed, and we stumbled around in complete darkness...
灯不知怎么地不亮了，我们在一片黑暗中跌跌撞撞地走着。
e.g. In fact many food crops failed because of the drought.
实际上，因为干旱，很多粮食作物歉收。
5.(企业)倒闭，破产;(机构)解体;(体系)崩溃
If a business, organization, or systemfails, it becomes unable to continue in operation or in existence.
e.g. So far this year, 104 banks have failed.
今年到目前为止，已有 104 家银行倒闭。
e.g. ...a failed hotel business...
破产的酒店
6.(健康状况、体质等)衰弱，虚弱，衰退
If something such as your health or a physical qualityis failing, it is becoming gradually weaker or less effective.
fail的近义词
e.g. He was 58, and his health was failing rapidly...
他 58 岁，身体正在迅速衰老。
e.g. Here in the hills, the light failed more quickly...
在山区这儿，天黑得更快。
7.辜负;使失望
If someonefails you, they do not do what you had expected or trusted them to do.
e.g. We waited twenty-one years, don'tfail us now.
我们等了 21 年了，如今不要让我们失望。
e.g. ...communities who feel that the political system has failed them.
对此套政治体制感到失望的群体
8.不履行，未尽(职责)
If someonefails in their duty orfails in their responsibilities, they do not do everything that they have a duty or a responsibility to do.
e.g. Lawyers are accused of failing in their duties to advise clients of their rights...
律师们被控未尽到告知当事人其正当权利的职责。
e.g. If we did not report what was happening in the country, we would be failing in our duty.
如果我们没有报道这个国家正在发生的事情，我们就没有尽到自己的责任。
9.(品质或能力)有负于;(使)不如愿;不够
If a quality or ability that you havefails you, or if itfails, it is not good enough in a particular situation to enable you to do what you want to do.
fail的近义词
e.g. For once, the artist's fertile imagination failed him...
这位画家丰富的想象力曾一度枯竭。
e.g. Their courage failed a few steps short and they came running back.
还差几步他们却胆怯了，又跑回来了。
10.不及格
If someonefails a test, examination, or course, they perform badly in it and do not reach the standard that is required.
e.g. I lived in fear of failing my end-of-term exams.
我总是担心期末考试不及格。
11.评定…不及格;使不及格
If someonefails you in a test, examination, or course, they judge that you have not reached a high enough standard in it.
e.g. ...the two men who had failed him during his first year of law school.
在法学院一年级时让他不及格的两个人
12.如果其他一切都不奏效的话;假如其他都行不通
You sayif all else fails to suggest what could be done in a certain situation if all the other things you have tried are unsuccessful.
e.g. If all else fails, I could always drive a truck.
如果其他都不行，我总还可以开卡车。
13.(用以表示不赞成)不明白，看不出
You can useI fail to see orI fail to understand in order to introduce a statement which indicates that you do not agree with what someone has said or done.
e.g. That's how it was in my day and Ifail to see why it should be different now.
我那时候就是这样的，我搞不懂为什么现在非要弄得不一样。
14.总是;一直
You usewithout fail to emphasize that something always happens.
e.g. He attended every meeting withoutfail.
他逢会必到。
15.(用以强调命令或承诺)一定，必须
You usewithout fail to emphasize an order or a promise.
e.g. On the 30th you must withoutfail hand in some money for Alex...
30 日那天你必须替亚历克斯交一些钱。
e.g. Tomorrow withoutfail he would be at the old riverside warehouse.
明天他一定会在河边的旧仓库里。
三、网络解释
1. fail的解释
1. 不及格：2005年7月,教师职业协会针对一个议题展开讨论--"不及格"(fail)是否应该从教育字汇中删除,并用"成就延期"(deferred success)来替代?之所以会有这个议题,是因为有些人认为学生们会因为考试屡次不及格而降低学习兴趣.
2. 错误：Fluke4000测试自动与标准进行比较,并且显示通过(Pass)或错误(Fail)信息,同时有声音提示,用RS-232打印出报告. (15) 简易综合布线测量仪,用于测量UTP双绞线. 系统测试在测试小组开展,在测试环境中实施,由测试经理统一负责.
3. 故障：成本差异:CMOS应用半导体工业常用的MOS制程,可以一次整合全部周边设施于单晶片中,节省加工晶片所需负担的成本和良率的损失;相对地CCD采用电荷传递的方式输出资讯,必须另辟传输通道,如果通道中有一个像素故障(Fail),就会导致一整排的讯号壅塞,
四、例句
We must hang together,or our plan will fail.
我们必须齐心协力,否则我们的计划就会失败。
He never fails to write to his mother every week.
他从来没有忘记每周给母亲写信。
He studied hard only to fail in the exam.
他这么用功，结果竟然考场失利。
The water supply failed during the drought.
在干旱期供水不足
As she is getting older, her sight is beginning to fail.
随着年纪越来越大,她的视力开始下降。
Your performance failed your coach who thought that you could have done better.
你的表现辜负了教练的期望,他认为你本可以做得更好一些。
He wanted to lift the heavy box, but his strength failed him.
他是想举起那个沉重的箱子,不过力气不行。
Words fail me right at the sight of this beautiful scenery.
面对着如此美景,我找不到词语来表达我的心情了。
You will fail French unless you work harder.
你要是不再加把劲儿,法语考试就不及格了。
He got a fail in history and passes in other subjects.
他历史考试不及格，其他科目都通过了。
He calls me every Sunday night without fail.
他每个星期天的晚上必定会给我打电话。
五、词汇搭配
六、经典引文
What dangers, by his Highness' fail of issue, May drop upon his kingdom.
出自：Winter's Tale,ShakespeareHe won't come this evening..But he'll come tomorrow Without fail.
出自：S. BeckettShaded over head with Trees, and with Matts when the boughs fail.
出自：H. Maundrell七、词义辨析
fail的相关近义词
fall down、fall through、flop、flunk、default、neglect
fail的相关反义词
fail的相关临近词
failure、Fahrenheit、Faili、Failly、Failla、faille、Faillu、Failli、Failey、Failde、failed、fail of