介词短语在句中分析与翻译的实例-学生

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介词的常见用法与例句分析

介词的常见用法与例句分析

介词的常见用法与例句分析介词是英语语法中十分重要的一部分,用来表示各种关系,连接其他词或短语。

在句子中,介词通常位于名词、代词、动词、形容词或副词之前,并指示它们之间的关系。

本文将介绍常见的介词用法,并给出相应的例句分析。

一、表示时间关系的介词1. "at"用于表示具体的时间点:- I will meet you at 7 o'clock.- We're having a party at the weekend.2. "on"用于表示具体的日期或星期:- She was born on January 1st, 1990.- We have a meeting on Monday.3. "in"用于表示较长的时间段:- I will finish this project in a month.- He went to Australia in 2010.二、表示地点关系的介词1. "in"表示大的范围或区域内:- The library is in the city center.- She lives in the United States.2. "on"表示接触或靠在某个表面上:- The book is on the table.- The picture is on the wall.3. "at"表示准确的位置:- I'm waiting for you at the bus stop.- They met at the park.三、表示移动方向的介词1. "to"表示向一个地点或目的地移动:- She walked to the store.- He is going to Paris.2. "from"表示从一个地点离开:- They came from Japan.- He returned from school.3. "through"表示穿过或经由某处:- We walked through the forest.- The road goes through the mountains.四、表示原因或目的的介词1. "for"表示目的或原因:- We go to school for education.- She bought flowers for her mother.2. "because of"表示因为:- The game was canceled because of the rain. - He was late because of the traffic jam.3. "with"表示伴随:- He went to the party with his friends.- She took a walk with her dog.五、表示方式或手段的介词1. "by"表示通过某种方式或手段:- We can travel by car.- He learned English by watching movies. 2. "with"表示使用某物或与某人合作:- He writes with a pen.- She painted the picture with watercolors.六、表示比较或对比的介词1. "than"表示比较级:- She is taller than her sister.- It's colder today than yesterday.2. "as"表示相同程度或相似性:- He is as tall as his father.- This book is as interesting as the previous one.七、其他常用介词1. "of"表示所属关系或材料:- The top of the mountain is covered with snow.- She made a doll out of clay.2. "at"表示注意或特定情况下:- Look at the beautiful sunset!- He was surprised at the news.3. "to"表示关系或方向:- She is nice to her colleagues.- He gave the book to me.总结:通过以上介词的常见用法与例句分析,我们可以看到介词在句子中承担着重要的作用,帮助我们准确表达时间、地点、移动方向、目的、方式、比较等关系。

介词的用法及例句

介词的用法及例句

介词的用法及例句引言:介词是英语中非常重要的语法成分之一,它可以用来表示时间、地点、方式、目的等等关系。

正确使用介词不仅能够提升语言表达的准确性,还能让我们的表达更加流利自然。

本文将详细介绍介词的用法,并给出一些常见的例句来帮助读者更好地掌握。

一、表示时间关系的介词:1. On例句:I have a meeting on Monday.解析:这里的on指明了会议在周一这个具体日期上进行。

2. In例句:The concert will be held in November.解析:这里的in表示在11月份这个时间段内举行音乐会。

3. At例句:We will meet at 9 o'clock tomorrow morning.解析:at用于表示具体时间点,此处表示我们明天早上9点见面。

二、表示地点关系的介词:1. In例句:She lives in New York City.解析:in用于表示所处位置或范围,此处指她住在纽约市内。

例句:I will meet you at the coffee shop.解析:at表示在某个特定地方遇见某人,这里指我将在咖啡店见你。

3. On例句:The book is on the table.解析:on表示在某物的表面,这里指书本放在桌子上。

三、表示方式关系的介词:1. By例句:She goes to work by bus.解析:by表示通过某种交通工具或方式进行,这里指她乘公交车上班。

2. With例句:He cuts the meat with a knife.解析:with表示使用某物进行操作,这里指他用刀切肉。

3. Like例句:He speaks English like a native speaker.解析:like表示像某人或某事物一样,这里指他说英语像个母语者一样流利。

四、表示目的关系的介词:1. For例句:I bought some flowers for my mother.解析:for表示为了某人或某事物而做,这里我买花是为了给妈妈。

介词短语在句中分析与翻译的实例-学生

介词短语在句中分析与翻译的实例-学生

介词短语在句中分析与翻译的实例1.You can already buy small video视频telephones,with builtin-screen and cameras内置屏幕和摄像头,that transmit still images over regular telephone lines to anyone else with a video telephone.2.The scientific worker attempts to formulate 明确地表达these problems in accurate terms and to solve them in the light of all the relevant facts that can be collected by observation and experiment.3.The atom is analogous类似的to a miniature缩图solar system,with a nucleus 原子核as the“sun''’and electrons as the“planets''’revolving in orbits轨道around the nucleus.4.The unit of heat on the c.g.s.system is the calorie,which is established as the amount of heat required to raise one gramme克of water by one degree centigrade.5.Sometimes the individual crystals晶体,with plane faces and sharp edges and corners,are visible to the naked裸体的eye,and sometimes they can be seen only under a microscope显微镜.6.Modern Japan and other Oriental东方的countries are emerging with the irresistible不可抵抗的urge for better standards of living and a novel,powerful role in the world’s economy.7.Liquids,however,are highly incompressible不能压缩的;that is,very large pressures,of the order of thousands of tons per square inch,are required to diminish使变小their volumes appreciably明显地.8.One suggestion has been the use of mixtures of two different types of insecticide杀虫剂,with the idea that one of them should eliminate排除the individuals resistant to the other.9.The side of Mercury水银which is turned away from the sun remains in eternal 永恒的darkness,with a temperature only a few degrees above absolute zero.10.No distinction can be drawn between pure and applied science应用科学in terms of 在…方面differences in the training or competence of workers,or in organization,or in method,or even in the immediate outcome of the work.11.An object with at least one easily measurable property which changes apprecially欣赏的while the object is coming to thermal equilibrium热平衡may be used as atemperature-measuring device,or thermometer.12.If we could go on an imaginary虚构的journey from the surface to the centre of a star such as the Sun,we would find a steady increase in temperature and pressure.13.The fact that a compass needle罗盘针assulnes a northsouth指向一个南北走向direction leads to the conclusion that the earth must be a magnet,with the space all around it constituting 组成a huge magnetic field.14.The second aspect is the application by all members of society,from the government officials to the ordinary citizen,of the special methods of thought and action that scientists use in their work。

介词短语在句子中的修饰作用与成分分析

介词短语在句子中的修饰作用与成分分析

介词短语在句子中的修饰作用与成分分析介词短语是由介词和其后的宾语、补语或者其他修饰语构成的一种短语结构。

在句子中,介词短语具有广泛的修饰作用,可以修饰名词、代词、动词、形容词和副词等不同的词类。

本文将通过具体例子分析介词短语在句子中的修饰作用和成分。

一、修饰名词和代词介词短语常常用来修饰名词和代词,起到限定、补充或者描述的作用。

例如:1. The book on the table is mine.(桌子上的书是我的。

)在这个句子中,介词短语“on the table”修饰了名词“book”,表示该书的位置。

2. I am interested in music.(我对音乐感兴趣。

)这里的介词短语“in music”修饰了名词“interested”,表示感兴趣的领域。

3. She is good at cooking.(她擅长烹饪。

)这个句子中的介词短语“at cooking”修饰了形容词“good”,表示擅长的技能。

二、修饰动词介词短语在句子中还可以修饰动词,表示动作发生的方式、方向、原因等。

例如:1. He walked through the park.(他穿过公园。

)这个句子中的介词短语“through the park”修饰了动词“walked”,表示动作发生的路径。

2. They flew to Paris for vacation.(他们飞往巴黎度假。

)这里的介词短语“to Paris”修饰了动词“flew”,表示动作发生的目的地。

3. She cried because of the sad news.(她因为这个坏消息而哭了。

)这个句子中的介词短语“because of the sad news”修饰了动词“cried”,表示动作的原因。

三、修饰形容词和副词介词短语还可以修饰形容词和副词,起到进一步描述和限定的作用。

例如:1. I am happy with the result.(我对结果感到高兴。

介词短语的常见搭配与意义解析

介词短语的常见搭配与意义解析

介词短语的常见搭配与意义解析介词短语在英语中是一种常见的语法结构,它由介词和其后的名词短语组成。

介词短语通常用来修饰动词、名词或形容词,常常起到补充说明、限定范围或表示关系的作用。

本文将探讨介词短语的常见搭配及其意义解析,并以实际例子进行说明。

1. 介词短语与动词的搭配a) Look at: 观察、看“Look at”用来表示观察或看某物。

例如:"Look at the beautiful sunset."(看那美丽的日落。

)b) Listen to: 听“Listen to”用来表示倾听或听某事物。

例如:"Listen to the music carefully."(仔细听音乐。

)c) Talk about: 谈论“Talk about”表示谈论或讨论某一话题。

例如:"Let's talk about our vacation plans."(让我们谈谈我们的假期计划。

)2. 介词短语与名词的搭配a) In the middle of: 在……中间“In the middle of”表示在某事物的中间位置。

例如:"We stopped our car in the middle of the road."(我们把车停在了路的中间。

)b) At the top/bottom of: 在……的顶部/底部“At the top/bottom of”表示在某物的顶部/底部位置。

例如:"The book you're looking for is on the top shelf."(你要找的书在最上面的架子上。

)c) On the way to: 在去……的路上“On the way to”表示在去某地的路上。

例如:"I saw an accident on the way to work this morning."(今天早上我在上班的路上看到了一起事故。

英语句法解析:介词短语的解释

英语句法解析:介词短语的解释

英语句法解析:介词短语的解释介词是最像动词的一种词类,它不能单独使用,后面必须要带宾语。

这种介词+宾语的形式就是介词短语,介词短语在句子中可作定语(后置)、状语、宾语补足补语、表语(主语补足补语)等等成分。

The boy in school uniform is my brother.
穿校服的那个男孩是我的弟弟。

介词短语作(后置)定语。

We often play football on the playground.
我们经常在操场上踢足球。

介词短语作状语。

Susan found the kid in the kitchen.
苏珊发现那个小孩在厨房里。

介词短语作宾语补足语。

Susan is in the kitchen.
苏珊在厨房里。

介词短语作表语(主语补足语)。

本文作者:苏承宗(公众号:英语语法教程)
英语句法解析:介词短语的解释。

句子中的介词短语

句子中的介词短语

句子中的介词短语在英语语法中,介词短语是由介词及其所跟随的宾语、补语或其他成分组成的短语结构。

介词短语在句子中扮演重要的角色,用于修饰名词、动词、形容词或整个句子等。

本文将讨论介词短语的作用、用法和常见示例。

一、介词短语的作用和用法1. 修饰名词介词短语可以用来修饰名词,对其进行限制或描述。

常见的介词短语有:- Of the students(学生们的):这个介词短语表明了“学生们”的归属关系。

- In the park(在公园里):这个介词短语说明了“公园”的位置。

- With a smile(带着微笑):这个介词短语描述了“微笑”的方式。

2. 修饰动词介词短语也可以用来修饰动词,增加对动作的修饰或说明。

常见示例有:- Run across the street(横穿马路):这个介词短语说明了“跑”的方式和方向。

- Look at the picture(看图片):这个介词短语指出了“看”的对象。

- Listen to music(听音乐):这个介词短语描述了“听”的内容。

3. 修饰形容词介词短语可以用来修饰形容词,起到进一步描述或限制形容词的作用。

例如:- Proud of her achievements(为她的成就感到自豪):这个介词短语进一步描述了“自豪”的原因。

- Excited about the upcoming trip(对即将到来的旅行感到兴奋):这个介词短语解释了“兴奋”的原因。

4. 修饰句子有时,介词短语可用于修饰整个句子,提供关于句子的背景或条件。

例如:- In my opinion(在我看来):这个介词短语显示了说话者的观点。

- With a little bit of luck(带着一点点运气):这个介词短语指出了句子中所描述的情况的可能性。

二、常见介词短语示例以下是一些常见的介词短语示例:1. 位置- On the table(在桌子上)- In the house(在房子里)- Under the bridge(在桥下)- By the lake(在湖旁)- At the bus stop(在公交车站)2. 归属关系- The book of the student(学生的书)- The house of my friend(我的朋友的房子)3. 方向- Across the street(穿过马路)- Along the river(沿着河流)- Into the room(进入房间)- Out of the car(从车里出来)4. 时间- After class(下课后)- During the summer(在夏天期间)- Before the meeting(会议之前)- At night(在晚上)5. 原因- Because of the rain(因为下雨)- Due to the delay(由于延误)- Thanks to his help(多亏了他的帮助)三、结论介词短语在英语中具有重要的语法和修辞作用。

介词短语在句中的用法和判别

介词短语在句中的用法和判别

介词短语在句中的用法和判别一、介词和介词短语的形式介词的形式可以是单个的词;如 at; in; by; of 等;也可以由几个词组成;如 out of出自;在…外;instead of代替;而不是;because of由于;in spite of尽管;by means of借助于等;还可以由某些动词的分词形式转化成介词;如 considering考虑到;including包括;regarding关于等..介词不能独立担任句子成分;而必须与名词、代词、数词、动名词构成介词短语;有时还可以把副词、介词短语、复合结构和从句作为介词的宾语参阅第138节宾语例 10~14 等..兹举例如下:1.They are friends of the Chinese people. 他们是中国人民的朋友..介词+名词2.Everything around us is matter. 我们周围的每个东西都是物质..介词+代词3.Everything divides into two. 事物都是一分为二的..介词+数词4.They work at the instruments factory near here. 他们在这里附近的仪表厂工作..介词+副词..本结构详见第140、一..5.After reading the book; I got to know something about internet phones. 把这本书读完之后;我开始对因特网电话有所了解..介词+动名词短语6.It is understood that this machine is out of action. 不用说;这台机器坏了..复合介词+名词7.The effects vary from being negligible; if below the concentration range; todeadly if above. 如果低于该浓度范围;效果是微不足道的;如果高于该范围;则效果是致命的..介词+动名词短语..注意from和 to 之间插入条件从句;并且有省略成份..8.With water transformed into steam; the locomotive gains a motive force. 等于 Aswater is transformed into steam;…随着水变成蒸汽;机车获得了动力..介词+复合结构9.She is well-qualified in typing and very efficient at her work. 她打字完全合格并且工作十分有效..介词+动名词或名词10.John is slow at understanding; but you have to be patient with him. 约翰理解慢;但你得耐心对待他..同上11.a. She is angry with her child. 她跟她的孩子生气..介词+名词b. She is angry about her child staying out so late. 她对她的小孩在外逗留那么晚感到生气..about 接一个复合结构..c. They were angry at being asked such a question. 他们对被提问这样一个问题而感到生气..at 接一个被动态的动名词短语..从上述 a;b;c 三句中可看出;根据不同的需要;形容词 angry 后面用了三个不同的介词来表示三种不同的情况..注 1:介词后的复合结构类型不少;详见第54节、一、ⅩⅣ B 例 5~11;13;14;和 C..1.I know little concerning或touching the computer viruses. 关于这些计算机病毒我知道很少..由分词转来的介词+名词2.Power can be transmitted to wherever it is needed. 电力能输送到需用电的任何地方..介词+介词宾语从句注 2:单独由介词通过连词 that 引出介词宾语从句的并不多见仅 except that…;besides that…;in that…等几个;后接由疑问词引出的介词宾语从句较为常见..1I know nothing about him except that he lives next door. 除了他住在隔壁以外;我对他一无所知..2Besides that he used the computer; he repaired it when it was out of order. 他不仅使用了这台计算机;并且当计算机发生故障时还进行了修理..3We disagreed in that the plan was not practical. 当时我们不同意是由于该计划不切合实际..也可理解为引出原因从句..注 3:大多数介词是通过疑问词引出介词宾语从句的;较少数通过先行代词 it; 再由 that 引出介词宾语从句;极少数直接由 that 引出介词宾语从句..例如:1What do you know about how rain and snow are formed关于雨雪怎样形成;你知道些什么呢2One of the more serious problems is that of what measures we can take to get more fresh water. 较为严重的问题之一是我们采取什么措施才能获得更多的淡水that 代表前面 problems 中的单数..3They can count on it that you will help them overcome the difficulty. 他们可以指靠你们帮助他们克服困难..4He agrees on it that I shall go to Beijing on business. 他同意我去北京出差..5We insist on it that he should be present at the conference. 我们不坚持要他出席会议..6The accident couldn't have happened except that it did. 那事故本来不可能发生;但却发生了..注 4:任意“疑问词+不定式”在句中可以顶一个名词用;作介词的宾语;而介词 except 和 but 还可用带 to 或不带 to 的不定式动词作为介词宾语..1He didn't know anything about how to go abroad for further studies. 当时他对于如何出国深造一无所知..2The question of where to learn spoken Chinese is quite important. 在哪里学汉语口语的问题是很重要的..3I cannot choose but或except to go there by air. 我别无选择;只能坐飞机去那里..4She will do anything but come here once more. 她绝不再次到这里来..介词 but 前出现 do;故后面不定式动词就不带 to..二、介词短语在句中的作用Ⅰ. 作定语:1.The formula for kinetic energy is applicable to any object that is moving. 动能公式可适用于任何运动的物体..2.Did you like the last grand fashion show of the 20th century你当时喜欢 20 世纪最后一次盛大的服装展览吗3. A hydrogen molecule consists only of two hydrogen atoms with the same atomicweight. 氢分子仅由两个原子量相同的氢原子所组成..注意有些介词短语表示数量包括倍数的范围;可用作前置定语..例如:1.To evaporate 1 lb of water from a solution; form 1;000 to 1;200 Btu is needed;and this calls for from 1 to 1.3 lb of steam. 从溶液中蒸发出1磅水;需要 1000到 1200 英热单位;而这就需要 l 到 1.3 磅水蒸汽..II. 作状语:1.In these circumstances the potential energy turns to kinetic energy. 在这些情况下;位能变为动能..2.In large amounts petroleum is used for manufacturing many chemicals. 石油大量地用于制造许多化工产品..若将in large amounts挪到句末;则它就说明动名词manufacturing..3.In spite of the difficulties; we went on with our work. 尽管有困难;当时我们仍继续工作..4.We should on no account或 should not on any account neglect our daily physicalexercises. 我们决不应该忽视每天的体育锻炼..5.We must never for a moment divorce ourselves from the masses. 我们永远一刻也不脱离群众..6.Jenny lives across the street from us. 詹妮住在我们街道对面..7.Such strange animals have at times been seen. 这样一些奇怪的动物有时就见到..III. 作表语:1.Alloys are of great use. 合金大有用处..2.The small particles are in random motion. 微粒处于杂乱无章的运动之中..3.The flow of the liquid is from A to B. 该液体是从 A 往 B 流动的..未按原文结构翻译Ⅳ. 作宾语补语或主语补语:1.We must keep the machines in good order. 我们必须保持机器正常运转..宾语补语2.Petroleum is considered of great value. 石油被认为很有价值..主语补语Ⅴ. 介词跟有关动词包括分词、不定式、动名词、名词或形容词搭配连用:A. 动词与介词搭配:1.Hydrogen and oxygen can unite in或into water. 氢和氧能化合成水..2.He does not know how to make use of this waste gas. 他不知如何利用这种废气..3.We should place stress on this problem. 我们应当强调这个问题..4. A catalyst changes the speed of a chemical reaction without entering into it. 催化剂能改变化学反应速度而不参与反应..5.If acting on a body; a force can change its speed. 如果一个力作用于物体上;它就能改变物体的速度..6.Considered as a building material; wood is not very strong. 虽然木头被认为是一种建筑材料;但强度不大..7.The difference between the two phones consists in functions. 这两架电话的差别在于功能不同..8.The liquid tastes of lemon. 该液体有柠檬味..B. 名词与介词短语搭配:介词与动词的搭配;一般也可引申到与动词具有相同词根的抽象名词上去;使这些名词也能具有这样的搭配关系:1.The combination of theory with practice is essential to us. 比较:to combinetheory with practice理论联系实际对我们是不可缺少的..2.The direction of motion can be changed by the action of another force on a body.比较:Another force acts on a body运动的方向可由另外一个力作用于物体上而改变..3.The quantity of work is determined by force and motion in the direction of theforce. 比较:to move in the direction of the force功的数值取决于力和沿着力的方向的运动..4.The introduction of laser into industry has only just begun. 比较:to introducelaser into industry激光用于工业还只是刚刚开始..5.Essential English is a course for the teaching of English to foreign students. 比较:to teach English to foreign students 基础英语是教外国学生英语的一门课..6.The Pearl River's flow into the sea is only second to that of the Yangtze River.比较:The Pearl River flows into the sea. 珠江入海流量仅次子长江..7.They discussed the definition of energy as the capacity to do work. 比较:todefine energy as the capacity to do work他们讨论了能是作功本领的定义..C. 形容词与介词搭配:1. A chemical change is different from a physical change. 化学变化不同于物理变化..2.This quality is characteristic of all metals. 这种性质是一切金属所特有的..3.The pressure is perpendicular to the direction of motion. 该压力垂直于运动方向..4.All effects are dependent on their causes. 一切结果是依原因而转移的..注:形容词后面要求用固定的介词为数不少..现再举例如下:be fortunate in so many books他很幸运有那么多书;be honest in the intentions他动机真诚;be keen on doing sth. 渴望做某事;be rude to sb. 对某人粗鲁;remain dependent on the parents儿童仍然依赖于家长;be grateful for sb’s advice我感谢某人的忠告;be bad at French她法语很糟糕;be not fond of dancing我不喜欢跳舞;be sure或certain of success她确信成功be far away form China他们远离中国;be quick at understanding他理解快;be valid for China这张护照即 this passport对中国有效;be quite sensitive to criticism他对批评很敏感;be content with…我对…很满足;be kind to sb.她对某人很和蔼;be busy with或at; about; in the work他忙于工作;contrary to sb’s expectations 出乎某人意料等..注:注意有时形容词跟它的固有的介词短语有分割现象..例如:The language is certainly not a different language from that of everyday life. 语言当然不是和日常生活的语言迥然不同的..三、介词短语用法判別时注意事项Ⅰ. 注意动词与不同的介词搭配;会有各种意思..现以 make 为例:to make use of… 利用…;to make wine from rice 用米制造酒;to make a thing into … 拿某东西制成帽子即 the hat;to make…of great value 使计算机成为很有价值;to be made a box out of… 以…制成箱子;to make away with… 拿走笔;灭掉证据即 the proof;浪费钱、财;to make up for… 弥补损失即the loss;to be made up of…物质由…构成等..为此;得多翻阅辞典;以查清动词与介词是否构成固定词组;但难点还在于当这些词组中的介词宾语变为中心词而构成被动态时;中心词与介词分隔开;词序也颠倒;就不好辨别..例如:1.Atomic energy can be made use of in the production processes. 原子能是可以在这些生产过程中加以利用的..主动态为:People can make use of atomicenergy….2.He was listened to with great interest. 当时人们怀着很大的兴趣听他讲话..主动态为:People listened to him with great interest.3.We consider that the wishes of the speaker and those of the person spoken to orspoken of are the same. 斜体字部分为过去分词短语作后置定语;说明前面的person..可联系 to speak to…和 to speak of…用法..我们认为;讲话者的愿望和听讲者或讲话申所提到的人的愿望是相同的..4.Water is spoken of as containing the two elements hydrogen and oxygen. 水被说成含有氢和氧两种元素..5.Your sentence needs adding a question mark to. 你的句子需要加一个问号..句中to后面未出现的宾语正是句中的主语..有时同一动词例如 arrive后面可有三个不同介词的搭配:1. a. He arrived at the five-star hotel on time. 他准时到达五星级饭店..到达小地方时;arrive后面用 at..b. I arrived in Tianjin yesterday. 我昨天到达天津..到达大城市时;arrive后面用in..c. The policeman arrived on the scene. 警察到达了现场..纯系习惯用法..II. 同一形容词;后面介词不同;会引起差异:1.They are familiar with cloning technology. 他们精通克隆技术..划线部分原意为“熟悉”..2.The subject is familiar to us. 我们熟悉这个课题..划线部分原义是“对…说来是熟悉的”..3.He is skilful at swimming. 他很会游泳..4.She is skilful in negotiation. 她善于谈判..5.He is skilful with a tool. 他善于使用工具..III. 同一介词;由于所搭配的词不同;也会具有各种含义..现以 in 为例:in China在中国;in a sense 在某种意义上;in all directions 沿着各个方向;in the right proportion 按照恰当的比例;in the main 大体上;基本上;in excess 过度;过量;in coordination 协调地;in common 共同等甚至有时同一介词短语;在不同上下文中都会有不同含义..例如:1.We shall start this work in a week. 一星期后我们开始这项工作..2.I shall see him several times in a week. 我将在一周内见到他几次..3.He completed the work in a week. 他用一周时间完成了这项工作..Ⅳ. 某些及物动词接上介词;就变为不及物动词;有时词义还有所变化..1.I looked but saw vt. nothing. 我看了;但未见到什么..2.This machine is out of order. Please see vi. to it. 这台机器发生故障..请检修一下.."see to…" 原义为“留心”、“注意”..3.If you don't believe him; go and see vi.into the matter. 如果你不相信他;你就去调查这件事吧..4.This news started vi. him thinking. 这条消息引起他的思考..5.I shall startvi.for Shanghai on Sunday at the latest. 我最迟星期日动身去上海..6.We must do our best to serve vi. the people. 我们必须尽力为人民服务..7.This box will servevi.for a seat. 这只箱子可当个座位..“to serve for…”原义为“供作…用”..Ⅴ. 介词宾语相同;而介词不同;会有很大差异..现以名词 business 和 itself 为例:1.He will go to Beijing on business. 他将出差去北京..2.This firm is now more the 30 years in business. 这家商行已经营 30 多年了..3.We go to business at eight in the morning. 我们早晨八点去上班或办公..4.He has been pressed by business. 他已经是非常繁忙..5.Such an animal often lives by itself. 这样的动物常常独居..6.The door closes of itself. 这门能自关..7.It is a small thing in itself. 这本来是件小事..8.I saw him on the way home. 我在回家路上见到了他..9.Don't stand in the way. 不要挡路站着..Ⅵ. 注意介词短语在句中的位置:介词短语作状语一般在句首或句末见本节一第 5;8;9;10 句和二、II 第 1;2;3 句;只是有些介词短语可紧挨谓语见本节二、Ⅱ第 4;5 句;作定语时放在所修饰的名词后面见本节、一第 1;2;4 句和二、 I;尤其当位于主语和动词中间时;则基本上作主语的定语见本节一、第 2 句和二、Ⅰ第 1 句..要注意两个前后相呼应的介词短语有时被分割的现象..例如:Millions of calculations may be done from the time when the scientific facts; or information; are put in to the time when the final answer reaches the output section. 从输入科学事实即信息时算起;一直到在输出段得到最后答案时为止;也许进行了千百万次计算..句中form… to… 前后呼应;但中间插上定语从句;修饰 the time..Ⅶ. 几个介词短语连用时;必须根据上下文逐个解决其与哪个词有关:1.The unit of measurement of the pressure of water is the pound. 水压的计量单位是磅..三个 of 短语各修饰其前面的名词2. A thermometer is placed in a mixture of ice and water in a beaker. 有一个温度计放在烧杯内冰和水的混合物中..第一个介词短语作 is placed 的状语;第二个作 mixture 的定语;而第三个根据逻辑判别应作“冰、水混合物”的定语..3.Power is measured by dividing the work done by the time used in doing the work.功率可由所作的功除以作功所用的时间来测量..第一个介词 by 短语是谓语的状语;第二个 by 短语是动名词 dividing 要求搭配用的;第三个 in 短语是作 time 的定语用的过去分词 used 所要求的搭配关系..Ⅷ. 注意有些介词来自动词;只是表面上似乎具有动词的非谓语形式..例如:1.Failing an answer; write another letter to us. 如果无答复;请再次写信给我们..2.Seeing her youth and inexperience she is not fit for the work. 由于她年轻没有经验;不适于作这项工作..3.He did it very well considering his age. 就他年龄而论;这件事他干得很好..注:参阅“-ing 的用法和判别”第54节、一、XVⅢ..Ⅸ. 注意有些词;既是介词;又可作副词用:。

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介词短语在句中实例1.You can already buy small video telephones,with built in-screen and cameras,that transmit still images over regular telephone lines to anyone else with a video telephone.2.The scientific worker attempts to formulate these problems in accurate terms and to solve them in the light of all the relevant facts that can be collected by observation and experiment.3.The atom is analogous to a miniature solar system,with a nucleus as the “sun” and electrons as the “planets” revolving in orbits around the nucleus.4.The unit of heat on the c.g.s.system is the calorie,which is established as the amount of heat required to raise one gramme of water by one degree centigrade.5.Sometimes the individual crystals,with plane faces and sharp edges and corners,are visible to the naked eye, and sometimes they can be seen only under a microscope.6.Modern Japan and other Oriental countries are emerging with the irresistible urge for better standards of living and a novel,powerful role in the world’s economy.7.Liquids,however,are highly incompressible;that is,very large pressures,of the order of thousands of tons per square inch,are required to diminish their volumes appreciably.8.One suggestion has been the use of mixtures of two different types of insecticide,with the idea that one of them should eliminate the individuals resistant to the other.9.The side of Mercury which is turned away from the sun remains in eternal darkness,with a temperature only a few degrees above absolute zero.10.No distinction can be drawn between pure and applied science in terms of differences in the training or competence of workers,or in organization,or in method,or even in the immediate outcome of the work.11.An object with at least one easily measurable property which changes appreciably while the object is coming to thermal equilibrium may be used as a temperature-measuring device,or thermometer.12.If we could go on an imaginary journey from the surface to the centre of a star such as the Sun,we would find a steady increase in temperature and pressure.13.The second aspect is the application by all members of society,from the government officials to the ordinary citizen,of the special methods of thought and action that scientists use in their work。

14.Chemistry has two main aspects:descriptive chemistry,the discovery and tabulation of chemical facts;and theoretical chemistry,the formulation of theories that,upon verification,unify these facts and combine them into a system。

15.Every body in the universe attracts every other body with a force directly proportional to the product of the masses of the two bodies and inversely proportional to the square of the distance between them.16.For an Italian contemplating anything from paying his taxes to getting a peddler’s license or collecting an old age pension,the nation’s million-man bureaucracy is a nightmare。

17.Scientists in the U.S., Western Europe and Japan are pushing hard toward a still much-in-the-future optical computer that uses photons rather than electrons for number-crunching efficiency.18.With the invention of the electromagnetic generator in the latter part of the nineteenth century,it became possible to convent the energy of burning fuel to electricity which could then be transmitted to distant points for Use.19.As a magnetic material becomes more and more magnetized,more and more of its magnetic domains line up,with their north poles a11 pointing in one direction and their south poles in the opposite direction.20.If a piece of rock,of anything else,one inch in diameter were magnified to the size of the earth,its constituent atoms would become about the size of tennis balls.21.Inability to build high-voltage generators and motors gives to the transformer immediate recognition as a highly flexible link between the generation and distribution of electrical energy.22.The mildness of its climate,with slight temperature variations and infrequent rainfall,combined with a high average level of sunshine and brilliant shies,a11 make it idea for tourism whether by winter or by summer.23.We explain the differences between gases and liquids by saying that the molecules in a liquid are not moving about so freely as the molecules in a gas and are very much closer together.24.For about the last 200 years,the structural theory has been developed by scientists,mathematicians and engineers,with the very practical object of providing a reliable basis for the design of structures by calculation.25.By the quiet persistence of the truth-seekers,working upstream against the flow of ancient prejudice,mankind has entered into new realm of health,and the borderlines of death have been pressed farther back.。

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