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speech, talk, lecturespeech, talk, lecturespeech指在公共场所所做的经过准备的较正式的演说，talk日常生活中的一般的谈话，讲话，lecture学术性的演讲，讲课1. speech还可作“演说,演讲; 讲话”解,通常指在公共场合为群众所作的讲话,强调影响、【详细解析】 |
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officer, officialofficer, officialofficer主要指军官或警官，有时也指文职官员或高级职员。 official通常指文职官员，公职人员，有时也指军官或警官。1. officer的基本意思是“军官,警官”,在现代英语中也指穿特殊制服的工作人员(如海关官【详细解析】 |
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work, jobwork, jobjob主要指有报酬的工作; 而work可指任何需要做出努力来完成的事。1. work的基本意思是“工作,劳动,作业”,用于泛指时不可数,指具体的一项工作时用不定冠词a修饰。She had been out of work for a year.她已【详细解析】 |
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couple, paircouple, pair这两个词都有“一双”“一对”的意思。其区别是：1.couple指在一起或互有关系的两个人或物,但并不意味是同样的,且可分可合; pair指由两个一样的东西组成的“一对”“一双”“一副”,缺一不可。例如:I foun【详细解析】 |
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country, nation, state, landcountry, nation, state, landcountry侧重指版图，疆域，nation指人民，国民，民族，state侧重指政府，政体，land国土，国家1. country作“国家,国土”解时表示地理概念,侧重指疆土,即一个国家的整个区域,是可数名词。the country可【详细解析】 |
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cook, cookercook, cooker1. cook用作名词时，意思是“做饭的人”,多指以做饭为职业者,即“厨师”。 The cook went to see the cake left in the oven.炊事员去照看炉子里的蛋糕了。 They engaged a cook for the summer.那个夏天【详细解析】 |
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police, policemanpolice, policeman police警察的总称，后接复数谓语动词，policeman 指某个具体的警察1. police的意思是“警察”,指警察这个官方机构,是单数形式的复数名词,前面一般要用定冠词the,后面跟动词的复数形式。 The police ha【详细解析】 |
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problem, questionproblem, questionproblem指客观上存在的、难以处理或难以理解的问题，前面的动词常为think about, solve, raise；question通常指用口头或书面提出来要求回答或有待讨论解决的问题，常和疑问联系，多和ask, answer连用。1. p【详细解析】 |
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chick, chickenchick, chicken 二者均可指小鸡，chicken还可以当鸡肉I breed some chicks for pets. 我养了一些小鸡当宠物。 The chick will soon feather out. 这只小鸡很快就要长羽毛了。chicken可以指作为家禽的鸡,也可指作为食品【详细解析】 |
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trip, journey, tour, travel, voyagetrip, journey, tour, travel, voyage这组词的共同意思是“旅行”“ 游历”“观光”“游程”。其区别是：journey多指有目的地的陆上长途旅行,有时也指水上或空中旅行,其距离远近、时间长短、旅行的目的和方式均不限,并【详细解析】 |
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sport, game, match, play, tournamentsport, game, match, play, tournament 这组词的共同意思是“运动,竞技,比赛”。其区别在于:1.sport一般指体力运动,如爬山、滑水、钓鱼等; game指常有一定的规则,而且决定胜负的脑力或体力劳动的“竞技”; match多指【详细解析】 |
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price, costprice, cost这两个词都有“价格”的意思,有时两者可以换用。例如:What's the cost〔price〕 of that book?这本书多少钱?其区别是：cost有“原价”“成本”的意思,指对物品所作的代价,包括物的发现,制造等所花去的一切【详细解析】 |
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a number of, the number ofa number of, the number of a number of许多，谓语动词用复数。the number of…的数目，谓语动词用单数。A number of visitors came to the meeting. 好几位来宾参加了会议。A number of cables are needed in th【详细解析】 |
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in front of, in the front ofin front of, in the front of in front of范围外的前面，in the front of范围内的前面A courtyard in front of a building. 前院建筑物前面的庭院Stop showing off in front of everybody. 别再在大伙跟【详细解析】 |
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for a moment, for the momentfor a moment, for the moment for a moment 片刻，一会儿，for the moment目前，暂时，一时 Thinking for a moment, he agreed. 想了一会儿，他同意了。He was silent for a moment, then began his answer.他沉默了一会儿，然【详细解析】 |
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more than a year, more than one yearmore than a year, more than one year more than a year一年多，more than one year超过一年（两年或三年等） It took me more than a year to recover.一年多以后我才恢复过来。 He may have to spend more than a year【详细解析】 |
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in a word, in wordsin a word, in wordsin a word总之，一句话， in words口头上；用语言 In a word, history is not the subject he is cut out for.简而言之，他没有天赋学历史。 In a word, then, we should improve our service.总之，我们应【详细解析】 |
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in place of, take the place ofin place of, take the place ofin place of代替（介词短语，通常在句中做状语），take the place of代替（动词短语，通常在句中做谓语）He used dry straw in place of a bed.他用干草代替床。 Nylon is widely used in place of【详细解析】 |
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go to sea, by sea, by the seago to sea, by sea, by the seago to sea当海员，出航，by sea乘船，由海路， by the sea在海边When he was a boy, his greatest wish was to go to sea.他小时候最大的愿望就是去当水手。They often travel by sea in summe【详细解析】 |
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the doctor and teacher, the doctor and the teacherthe doctor and teacher, the doctor and the teacherthe doctor and teacher指一个人，既是医生又是老师，在句中充当主语时，谓语用单数。the doctor and the teacher两个人，一个医生和一个老师，在句中充当主语时，谓语用复数【详细解析】 |
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in office, in the officein office, in the officein office在职，当权；in the office在办公室里He abused his power while in office.他在职时滥用权力。 In office herself, she helped him get a job.她本人在职时帮他找了份工作。 Is it ok【详细解析】 |
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in charge of, in the charge ofin charge of, in the charge ofin charge of管理，负责照料， in the charge of由……照料/负责/管理 He is the vice-president in charge of sales.他是负责销售的副总经理。 He is in charge of the municipal housin【详细解析】 |
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in class, in the classin class, in the classin class在课上，in the class在班级里He was expelled for smoking in class. 他因在上课时吸烟而被开除了。 Children who talk too much in class get under the teacher's skin. 班长【详细解析】 |
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out of question, out of the questionout of question, out of the questionout of question毫无疑问的，out of the question不可能的It is out of question to arrive there on time. 准时到达那里毫无问题。 That she will pass the entrance exami【详细解析】 |
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a second, the seconda second, the seconda second又一，再一（无顺序之分），the second第二……As a beginner of a second language, you have many difficulties to overcome. 初学另一门语言,你有很多困难要克服. He tried a second ti【详细解析】 |
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