英语中knowledge是一个常见但失却存在感的词，除了Knowledge is power.的出现。其实细看之下它也大有乾坤，我们不妨用心感受它的神奇所在。
一、基本含义
①[u][sing]知识；学问；学识
Once upon a time, there was an island on which lived Happiness, Sadness, Knowledge, and all the rest of it including Love.
从前在一个岛上住着快乐、悲伤、知识等其中也包括爱。
It is no doubt necessary to train young men and women to present their knowledge and ideas with lucidity.
无疑，有必要培养男女青年清晰表达自己的思想和见解的能力。
It is such a common rectangular blackboard, but it is the golden key to the door of the treasure house of knowledge.
就这样一个普通的长方形黑板，可却是通往知识宝库的金钥匙。
It points out that the new teaching mode can make difficult knowledge easy to understand and vivid, thus producing better teaching results.
它指出这种新的教学模式可以使高难度的知识通俗易懂、生动形象，从而产生较好的教学效果。
Knowledge is the crystallization of the precious gems; culture is the luster of the gem released.
知识是珍贵宝石的结晶,文化是宝石放出的光泽。
注：
knowledge作不可数名词，一般没有单复数，但其前可用this/that/the等修饰
Jake explained that this knowledge is essential to the next phase in 'Earth human' development.
杰克解释说，这种知识对于'地球人类’发展的下一个阶段是必不可少的。
With all this knowledge at hand, look at it in a practical application context.
了解这些基本的知识后，现在看一个实际的应用。
Even more important, I hope you are able to identify the mistakes that have derailed you, and use that knowledge to your advantage from now on.
更重要的，我希望你能够发现那些让你偏离的错误，并从现在开始让这些知识为你所用。
Colleges and universities have no point if we do not value the knowledge and understanding to which their faculties are dedicated.
如果我们并不认为他们的那些职工所献身于的知识与理解有价值，学院和大学的存在就毫无意义。
②[u]知晓；知悉；了解
The film was made with the Prince's full knowledge and approval.
这部影片是在王子充分了解和认可的情况下拍摄的。
She sent the letter without my knowledge.
她背着我把信寄了出去。
There is a lack of knowledge about the tax system.
大家对税制缺乏了解。
He surprised us with his knowledge of the locality.
我们很惊讶他对那地方如此了解。
二、相关短语：
(1)knowledge of有关……的知识；对…的了解
For a translator, it is impossible for him to do so if he doesn't possess the knowledge of the two cultures.
对于一个译者来说，如果他不具备两种文化的知识，他是不可能做到这一点的。Knowledge of French is a plus in her job.
通晓法文使她在工作中占优势。
①以用表数量的all/any/no/slight/some等修饰表示程度：
He denied all knowledge of the affair.
他否认知道此事。
She disclaimed any knowledge of her husband's whereabouts.
她否认知道丈夫的下落。
A company spokesman said he had no knowledge of any flags being taken down.
一位公司发言人说他对降旗一无所知。
This was most blessedly perfect long before we had the slightest knowledge of him.
早在我们对他有丝毫的了解之前，这一切就已经非常完美了。
With some knowledge of the personal relations of the dreamer, I was able to interpret parts of it independently of her.
由于我清楚梦者的人际关系，因此能够对梦进行部分分析，而无需梦者的帮助。
②强调特指时以定冠词辅助
The knowledge of his guilt tormented him.
知道了自己的罪责使他非常痛苦。
Literature offers us the knowledge of the long life which phobia have had in mankind.
文献让我们了解到，恐惧症在人类中具有漫长的历史。
He felt sorry for the knowledge that I had been in trouble and pain, and had not come to him for help and support.
知道我一直处于困境和痛苦之中，却没有向他寻求帮助和支持，他感到很抱歉。
(2)a knowledge of知晓；掌握；懂得
For people with a knowledge of appreciating, a loss can be a gain.
对于知道珍惜的人来说，失去是一种拥有。
It's known that a knowledge of many languages is not a piece of cake.
众所周知，通晓多门语言不是件容易的事。
①多跟动词acquire/have/possess/obtain等连用
It is not easy to acquire a knowledge of painting.
学会画画不是件容易的事。
Whatever career you follow, it is essential to have a knowledge of computer.
无论你从事何种职业，懂电脑是必不可少的。
He possesses an extensive knowledge of banking.
他具有广博的银行业务知识。
My sister obtained a knowledge of Latin.
我妹妹学会了拉丁文。
② 可以basic/better/general/good/limited/thorough/wide等修饰
To understand the next command, you need a basic knowledge of the concept of service class.
要理解下一个命令，您需要基本了解服务类的概念。
It isn't up to me to say if he'll play, Leonardo has a better knowledge of the situation.
他上不上场我说了不算，莱昂纳多对这个情况会有更好的认识。
We need a guide who has a good knowledge of Chongqing's history.
我们需要一个精通重庆历史的向导。
He has a wide knowledge of painting and music.
他在绘画和音乐方面知识渊博。
(3)to one’s knowledge就某人所知
Alec never carried a gun to my knowledge.
据我所知亚历克从来不带枪。
He never made a will, to (the best/extent) of my knowledge.
据我所知，他从未立过遗嘱。
(4)common/general/public knowledge常识
It’s common knowledge that swimming is one of the best forms of exercise.
众所周知，游泳是最好的运动方式之一。
It's general knowledge that the software developer is often crunched for time.
众所周知，软件开发人员在时间方面通常都很紧张。
(5)(sth.)come to one’s knowledge传到某人耳朵里
bring sth. to the knowledge of sb. 把…传到某人耳朵里
The matter never comes to the knowledge of him.
这件事他决不会知道。
The matter was never brought to the knowledge of him.
这件事决不要让他知道。
It has come to our knowledge that you have been taking time off without permission.
我们了解到你们时常未经允许就不上班。
(6)in the knowledge of在…知识方面；在了解…的情况下
She is poor in the knowledge of life.
她对人生的学问懂得很少。
The general is exuberating in the knowledge of having contributed to victory .
将军因知道自己对胜利有所贡献而兴高采烈。
(7)in the certain knowledge of 在明知……的情况下
The merits of competition by exam are somewhat questionable, but competition in the certain knowledge of failure is positively harmful.
通过考试来竞争，其好处有点令人怀疑，但明明知道会失败还去竞争，这肯定是有害的。
(8)in the knowledge that… 在知道…的情况下
She was impatient in the knowledge that time was limited.
她知道时间有限，所以很着急。
You used to be able to rent or buy a tuxedo and rest easy in the knowledge that you were prepared for any formal business or social event.
过去，你可以租到或买到一件燕尾服，然后高枕无忧，因为知道你已经为任何正式的商务或社交活动做好了准备。
(9)safe/secure in the knowledge that 对... 大可放心（因为知道）
She went out safe in the knowledge that she looked fabulous.
她确信自己打扮得无可挑剔后才出门去。
You can let your kids play here, safe in the knowledge that they won't get sunburn.
大可放心让孩子在这玩，他们不会被晒伤的。
(10)out of all knowledge 无法辨认；认不出来
She has altered out of all knowledge since her illness.
自从病后,她已变得让人认不出了。
History became legend, legend became myth and for two and a half thousand years, the Ring passed out of all knowledge.
历史变成了传说，传说变成神话。两千五百年来，至尊魔戒的下落无人得知。
三、衍生词系：
（1）acknowledge v.承认，接受; 感谢; 理会;告知收到
She refuses to acknowledge the need for reform.
她拒不承认改革的必要性。
He is widely acknowledged as the best player in the world.
普遍认为他是世界最佳球员。
Doran stuck his head out of the window to acknowledge the cheering.
多兰将头探出窗户向欢呼的人们致谢。
I was standing right next to her, but she didn't even acknowledge me.
我就站在她身边，可是她理都不理我。
The army sent me a postcard acknowledging my request.
军队寄给我一张明信片告知我的申请书已收到。
It is widely acknowledged that students should be evaluated in terms of overall quality.
人们普遍认为应该从综合素质来评价学生。
（2）acknowledgedly adv. 公认地
Many acknowledgedly important concepts in medicine are still lacking an adequate definition.
很多公认的医学中的重要概念还没有一个明确的定义。
It is acknowledgedly a sad story, but one that needs to be told.
这是一个公认的悲伤的故事，但需要讲述出来。
It is acknowledgedly important to be respectful of other people’s cultures.
公认重要的是要尊重他人的文化。
（3）acknowledgement
n.承认; （公开）致谢; 打招呼; 收件复函
This report is an acknowledgement of the size of the problem.
这个报告承认了问题的严重性。
I was sent a free copy in acknowledgement of my contribution.
我收到一本赠刊，表示对我投稿的谢意。
She gave me a smile of acknowledgement.
她向我微笑打招呼。
I didn't receive an acknowledgement of my application.
我的申请没有得到复信告知收悉。
（4）knowledgeable
adj.博学的，知识渊博的; 有见识的; 精明的; 博洽多闻的
We like the teachers both knowledgeable and humorous.
我们喜欢知识渊博又有幽默感的老师。
The way Chinese people interact and address is complicated and knowledgeable.
中国人的人际交往和称谓真是即复杂又有学问。
The professor is incredibly knowledgeable about ancient civilizations.
这位教授对古代文明非常精通。
She is not only knowledgeable but also able to explain complex concepts in an easy-to-understand manner.
她不仅博学，而且能够以易懂的方式解释复杂概念。
（5）knowledgeably adv.知识渊博地;有见识地;睿智地;博学地
If you can write knowledgeably about a subject that is a passion of yours, the enthusiasm is going to come across to your readers.
如果你能睿智地写一个你感兴趣的主题，你的热情就会打动读者。
You should be prepared to talk knowledgeably about the requirements of the position you are applying for.
你应该准备得体地谈论你所申请职位的要求。
The speaker discoursed knowledgeably on a variety of subjects.
演讲者头头是道的论述了一系列问题。
This then gives you the data needed to proceed knowledgeably.
这将为您提供明智地进行加工所需的数据。
（6）knowledgeability n.知识丰富；知识性；聪明
A whole host of questions caused serious problems about her knowledgeability.
很多问题引发了对她所具备知识的严重担心。
His knowledgeability impressed me.
他的丰富知识给我深刻的印象。
This attitude is no longer relevant in a world in which knowledgeability, quality and design are pivotal to success or failure.
在一个知识、质量和设计是成功或失败的关键的世界里，这种态度不再相关。
（7）knowingly adv.会意地; 故意地; 狡黠地;机警地
She was accused of knowingly making a false statement to the police.
她被指控故意向警方提供虚假供词。
He is of the view that people who knowingly spread the virus are murderer.
他的观点是,故意传播那种病毒相当于谋杀。
（8）unknowingly adv.不知不觉地
Unknowingly, we advance to an old age.
在不知不觉中, 我们进入了老年。
These cells unknowingly copy the virus's DNA, creating more viruses.
这些细胞在不知不觉中复制病毒的DNA, 因而制造更多的病毒。
People, who unknowingly eat fish contaminated by pollutants in the water, can become seriously ill.
不知道实情的人吃了被水中污染物污染的鱼可能患重病。
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