人教版高中英语选修9课件：Unit 2 Sailing the oceansLanguage Points

1、人教课标人教课标 高三高三 选修选修 9 Unit 2 We may well wonder how seamen explored the oceans before latitude and longitude made it possible to plot a ships position on a map. 在经纬度未能绘出航船在地图上的位置在经纬度未能绘出航船在地图上的位置之前，我们很想知道航海员是怎样在海之前，我们很想知道航海员是怎样在海上探险的。上探险的。 Page 12【考点【考点 1】 it 作形式宾语，真正的宾语是后面的作形式宾语，真正的宾语是后面的动词不定式短语。动词不

2、定式短语。【考例】【考例】 The fact that she was foreign made _ difficult for her to get a job in that country. A. so B. muchC. that D. it 【点拨】【点拨】选选 D。句意为。句意为“她是外国人的事实使她是外国人的事实使得她在那个国家很难找到工作。得她在那个国家很难找到工作。” 句句中的中的to get a job in that country 是动词是动词不定式短语，作不定式短语，作made的宾语，的宾语，difficult是宾语补足语，此处是宾语补足语，此处it作形式宾语，其作形

3、式宾语，其他词没有这种用法。他词没有这种用法。【考点【考点 2】position 作名词，意为作名词，意为“位置，职位位置，职位”。【考例】【考例】 From their _ on the top of the TV Tower, visitors can have a better view of the city. A. stage B. position C. condition D. situation【点拨】【点拨】 选选 B。句意为。句意为“从电视塔顶部的位置，从电视塔顶部的位置，游客们可以更好地看到城市的景色。游客们可以更好地看到城市的景色。” position 位置，符合句意。

4、位置，符合句意。stage 舞台；舞台； condition 条件，环境；条件，环境； situation 形势，形势，处境。处境。2. The voyages of travelers before the 17th century show that they were not at the mercy of the sea even though they did not have modern navigational aids. 17世纪以前的航海记录显示，即使没有世纪以前的航海记录显示，即使没有 现代航海技术的帮助，他们也没有任凭现代航海技术的帮助，他们也没有任凭 海洋摆布。海洋摆

5、布。【点拨】【点拨】 此句是一个复合句。主句为：此句是一个复合句。主句为：The voyages of travellers before the 17th century show；从句为；从句为 that 引导的引导的 _从句：从句： that they were not . modern navigational aids，作，作 _ 的宾语。在的宾语。在此从句中，包含一个由此从句中，包含一个由 _ 引引导的导的 _ 从句：从句：even though they did not have modern navigational aids。让步状语让步状语宾语宾语showeven thou

6、gh(1) voyage n./ vi. 航海航海, 航行航行e.g. The voyage from England to India used to take six months.过去从英国航行到印度要六个月。过去从英国航行到印度要六个月。 go on / make / take a sea voyage去航海旅行去航海旅行voyager n. 航行者航行者, 航海者航海者They have got everything ready to make a _ across the Atlantic.A. trip B. travel C. voyage D. tour(2) at the

7、mercy of【双语释义】【双语释义】not able to stop sb. / sth. harming you because they have power or control over you 受受支配；对支配；对无能为力；任无能为力；任由由摆布摆布e.g. They were absolutely at the mercy of the king. 他们完全任国王处置。他们完全任国王处置。We are at the mercy of the weather. 我们拿天气毫无办法。我们拿天气毫无办法。I wouldnt like to be at the mercy of suc

8、h a cruel man. 我可不愿受如此残酷的人的摆布。我可不愿受如此残酷的人的摆布。 【小试】【小试】 根据所给提示完成下列句子。根据所给提示完成下列句子。 They _ (对对毫不怜毫不怜 悯悯) to the enemies.2. _ (幸运的是幸运的是) she wasnt seriously hurt.3. The old man was treated _ (无情地无情地).showed no mercyIt is a mercywithout mercy4. The young man is not going to put himself _ (任任 由银行摆布由银行摆布)

9、.at the mercy of the bank(3) even though 用作连词，意为用作连词，意为“尽管，尽管， 即使即使”，引导让步状语从句。，引导让步状语从句。There was never any time for Kate to feel lonely, _ she was an only child. A. ever since B. now thatC. even though D. even aseven though “尽管，虽然尽管，虽然”，引导让步状，引导让步状语从句。语从句。 ever since “自从自从以来以来”，常，常和完成时态连用；和完成时态连用；n

10、ow that “既然，由既然，由于于”；even as “正当，恰恰在正当，恰恰在的时的时候候”。【拓展】【拓展】 even though 和和 even so 的区别：的区别：even though = even if 用作连词，引导让步状用作连词，引导让步状语从句；语从句；even so 用作副词，意思是用作副词，意思是“尽尽管这样管这样/那样，即便如此那样，即便如此”。Your uncle seems to be a good driver; _, I wouldnt dare to travel in his car.A. even soB. even thoughC. theref

11、oreD. so3. This seems to have been the first and most useful form of exploration which carried the minimum amount of risk. minimum (min) adj. 最小的最小的, 最低的最低的 n. 最小值最小值, 最小化最小化其反义词为其反义词为: maximum (max) adj. 最高的最高的, 最多的最多的, 最大极限的最大极限的 n. 最大量最大量, 最大限度最大限度, 极大极大e.g. The minimum requirements for the job a

12、re a degree and two years experience. 该工作的最低要求是要有学位和两年该工作的最低要求是要有学位和两年 的工作经验。的工作经验。 You must get a minimum of 40 questions right to pass the examination. 你最少必须答对你最少必须答对40道题才能通过考试。道题才能通过考试。 keep / reduce sth. to a minimum 将某物保持在将某物保持在/降低到最低限度降低到最低限度e.g. The school manages to keep bullying to a minimu

13、m. 学校设法最低限度得减少学校设法最低限度得减少恃强凌弱的行为。恃强凌弱的行为。The maximum number of students in each class is 58.每个班学生人数的最高限额是每个班学生人数的最高限额是58名。名。4. Seabirds could be used to show the way to land when it was nowhere to be seen. 【考点】【考点】 when在高考中常考的用法有：在高考中常考的用法有： 1) 作从属连词，引导时间状语从句，意为作从属连词，引导时间状语从句，意为“当当时时”。2) 作连接副词，引导名词作

14、连接副词，引导名词性从句或不定式，意为性从句或不定式，意为“什么时候什么时候”。从。从句使用陈述句语序，时态根据实际情况而句使用陈述句语序，时态根据实际情况而定。定。3) 作关系副词，引导定语从句。作关系副词，引导定语从句。4) 意为意为“这时这时”，构成句型：，构成句型： . was / were about to do . when .； . was / were doing . when .； . was / were going to do . when .； . was / were on the point of doing . when .； . had done . when

15、.。【考例】【考例】 Tom was about to close the window _ his attention was caught by a bird. A. when B. if C. and D. till【点拨】【点拨】 选选A。句意为。句意为“汤姆正要关窗，汤姆正要关窗，这时他的注意力被一只鸟吸引了。这时他的注意力被一只鸟吸引了。” be about to do sth. when . 是一个固定句式，是一个固定句式，表示表示“某人正要做某人正要做这时这时”。nowhere adv. 无处无处, 到处都无到处都无 该词用于句首时，要用倒装语序。该词用于句首时，要用倒装语序。

16、 e.g. I have no job and nowhere to live.我没工作，也没地方住。我没工作，也没地方住。Nowhere could I see him.我哪儿也看不到他。我哪儿也看不到他。 Maybe you have been to many countries, but nowhere else _ such a beautiful palace. A. can you find B. you could find C. you can find D. could you findnowhere else 是否定词，以否定词开头是否定词，以否定词开头的句子要进行倒装。根

17、据上一个句子的的句子要进行倒装。根据上一个句子的谓语动词可确定用一般现在时。谓语动词可确定用一般现在时。注：注：nowhere 置于句首时，句子要用倒置于句首时，句子要用倒装的语序。装的语序。5. So seamen could follow the birds to land even if they were offshore and in the open sea. offshore adj./adv. 向海面吹的向海面吹的, 离岸的离岸的, 海海 面上的面上的, 海上海上/下作业的下作业的 offshore workers 海上作业的工人海上作业的工人 offshore bank/co

18、mpany/investment 境外银行境外银行/公司公司/投资投资offshore wind/current etc.从陆地吹向海面的风从陆地吹向海面的风/离岸的潮流离岸的潮流e.g. The storm moved offshore. 风暴离岸移动。风暴离岸移动。 A boat moored offshore. 船在近海下锚。船在近海下锚。6. They could accelerate the speed, but they could also be dangerous. accelerate vi./vt. = to (cause to) move faster 加速加速, 促进促

19、进 e.g. She accelerated her car and passed the bus in front. 她加快车速超过了前面的公共汽车。她加快车速超过了前面的公共汽车。 The car suddenly accelerated. 那辆车突然开始加速。那辆车突然开始加速。 There was no secure method of measuring longitude until the 17th century when the British solved this theoretical problem. secure adj. 安全的安全的, 可靠的可靠的, 放心的放心

20、的, 无虑的无虑的 v. 保护保护, 使安全使安全 e.g. Our house is secure from flood. 我们的房子没有被淹的危险。我们的房子没有被淹的危险。Page 13security n.安全，保安，保护安全，保安，保护e.g. Security was tight during the Presidents visit. 总统来访期间总统来访期间, 保安工作十分严密。保安工作十分严密。 For security reasons the visitors were searched. 为了安全起见为了安全起见, 来宾受到了检查。来宾受到了检查。Some measure

21、s are needed to secure the bank from a flood. 这道堤防需要采取一这道堤防需要采取一些措施些措施, 免得被洪水冲坏。免得被洪水冲坏。2. The compass has a special magnetic pointer which always indicates the North Pole. magnetic adj. 磁的磁的, 有磁性的有磁性的, 有吸引有吸引 力的力的 magnet n. 磁体磁体, 磁铁磁铁 a magnetic recorder 磁录音机磁录音机 e.g. a magnetic compass bearing可分辨磁

22、极方向的罗盘可分辨磁极方向的罗盘a magnetic person 有魅力的人有魅力的人 The iron has lost its magnetic force. 这铁已失去磁力。这铁已失去磁力。 3. Then he could tell if he was sailing on his correct rather than a random course. random n. 随意随意, 任意任意 adj. 任意的任意的, 随便的随便的, 胡乱的胡乱的 make a random choice 任意选择任意选择 at random = aimlessly; without any pl

23、an 随机，随便随机，随便e.g. The travelers at the airport were searched at random.(搜查人员对搜查人员对)机场上的旅客随便选机场上的旅客随便选几个人加以搜查。几个人加以搜查。 Soiled dishes were piled at random. 脏碟子乱七八糟地堆着。脏碟子乱七八糟地堆着。4. It was awkward to use as one of the points of reference was the moving ship itself. awkward adj. 难使用的难使用的, 笨拙的笨拙的, 尴尬的尴尬的

24、; 棘手的棘手的, 难处理的难处理的An awkward situation arose during the peace talks. 在和平谈判中出现了棘手的情况。在和平谈判中出现了棘手的情况。e.g. There was an awkward silence, when no one knew what to say. 当谁都不知道说什么时，出现了令人尴当谁都不知道说什么时，出现了令人尴 尬的沉默。尬的沉默。5. This was a more precise and simplified version of the astrolabe. precise adj. 精确的精确的, 准确

25、的准确的 precision n. 精确精确(性性), 精密精密(度度)e.g. A lawyer needs a precise mind. 律师需要一丝不苟的精神。律师需要一丝不苟的精神。 A camera is an instrument of precision. 照相机是一种精密仪器。照相机是一种精密仪器。 【拓展】【拓展】 precisely adv. 准确地；恰好地准确地；恰好地 to be (more) precise 确切地说，准确地说确切地说，准确地说e.g. The shelf is about a meter long well, 98 cm, to be precis

26、e. 架子长约架子长约1米。嗯，准确地说，是米。嗯，准确地说，是98 厘米。厘米。【小试】【小试】 用用 precise 的适当形式填空。的适当形式填空。 I can be reasonably _ about the time of the incident.2. The children are _ the ones who will suffer if they get divorced.precisepreciselysimplify vt. 单一化单一化, 简单化简单化simple adj. 简单的简单的e.g. The English in this story has been

27、simplified to make it easier to understand. 这个故事里的英语被这个故事里的英语被简写以便更容易理解。简写以便更容易理解。 His father lived a simple life in the country. 他父亲在农村过着简朴的生活。他父亲在农村过着简朴的生活。6. It was easier to handle because it was more portable.【考点【考点 1】 handle的意义和用法。句中的的意义和用法。句中的handle是及物动词是及物动词, 表示表示“操作操作, 操纵操纵”。此。此外外, handle还有

28、还有“拿；指挥；管理拿；指挥；管理, 处理；处理；经营经营”等含义。等含义。【考例】【考例】 As nobody here knows what is wrong with the machine, we must send for an engineer to _ the problem. A. handle B. raise C. face D. present【点拨】【点拨】 本题考查动词辨析。句意为：因为这儿本题考查动词辨析。句意为：因为这儿没有人知道机器到底出了什么毛病，所没有人知道机器到底出了什么毛病，所以我们必须派人去请一位工程师来处理以我们必须派人去请一位工程师来处理这个问题。

29、由句意可知，这个问题。由句意可知，handle 符合符合语境。语境。raise 举起，提高，提出；举起，提高，提出；face 面对，朝；面对，朝；present 赠送，呈交。赠送，呈交。【考点【考点 2】句型句型“主语主语 + 系动词系动词 + 形容词形容词 + to do”的的用法。在此结构中用法。在此结构中, 如动词不定式表示的如动词不定式表示的动作与句子的主语之间存在逻辑上的动宾动作与句子的主语之间存在逻辑上的动宾关系，且形容词表示主语的特征或性质，关系，且形容词表示主语的特征或性质，则用动词不定式的主动形式表示被动意义。则用动词不定式的主动形式表示被动意义。如果动词不定式的动词是不及物

30、动词如果动词不定式的动词是不及物动词, 则则要后接相应的介词。要后接相应的介词。【考例】【考例】I like getting up very early in summer. The morning air is so good _. A. to be breathed B. to breatheC. breathing D. being breathed【点拨】【点拨】第二个句子结构为第二个句子结构为 “be + 形容形容词词 + to do”，用动词不定式的主动形式，用动词不定式的主动形式表示被动意义。表示被动意义。portable adj. 轻便的轻便的, 手提手提(式式)的的, 便携便

31、携 式的式的a portable typewriter 提式打字机提式打字机 a portable generator 便携式发电机便携式发电机7. Its shortcoming was that it still used the moving ship as one of the fixed points of reference.reference n. 提及提及, 涉及涉及, 参考参考, 参考书目参考书目, 证明书证明书(人人), 介绍信介绍信(人人)e.g. At the meeting the teacher made references to his heroic deeds

32、. 在会上老师提到了他的英雄事迹。在会上老师提到了他的英雄事迹。These are reference books for teachers. 这些是教师参考书。这些是教师参考书。refer v. 提到提到, 涉及涉及, 查阅查阅, 咨询咨询e.g. Her pupils often refer to this dictionary.她的学生经常查这本字典。她的学生经常查这本字典。Dont refer to it again. 别再提那件事。别再提那件事。shortcoming n. 缺点缺点, 短处短处(常用复数常用复数)e.g. In spite of all her shortcomin

33、gs, she is still the best teacher the school has. 她尽管有些缺点，但仍然是该校最好她尽管有些缺点，但仍然是该校最好的教师。的教师。8. The sextant was the updated version of the astrolabe and quadrant which reduced the tendency to make mistakes. update v. 使现代化使现代化, 修正修正, 校正校正, 更新更新 n. 现代化现代化, 更新更新 updated adj. 最新的最新的, 现代化的现代化的, 适时的适时的 an up

34、dated and revised edition 最新修订本最新修订本tendency n. 趋向趋向, 倾向倾向e.g. Weve noticed a growing tendency for people to work at home instead of in offices. 我们注意到一种趋势，越来越多的我们注意到一种趋势，越来越多的人在家里工作而不在办公室里上班。人在家里工作而不在办公室里上班。have a tendency to do sth. 倾向于做某事倾向于做某事, 往往会做某事往往会做某事e.g. Jeans nice but she has a tendency t

35、o talk too much. 简人倒不错，就是往往太唠叨。简人倒不错，就是往往太唠叨。9. It proved to be the most accurate and reliable of these early navigational instruments. reliable adj. 可靠的可靠的, 可信赖的可信赖的 rely v. 依赖依赖, 依靠依靠, 信赖信赖, 信任信任, 依赖于依赖于 reliability n.可靠性可靠性e.g. She may forget to come - she is not very reliable. 她可能忘来了，她太不可靠。她可能忘来

36、了，她太不可靠。课文长句难句剖析课文长句难句剖析The compass has a special magnetic pointer which always indicates the North Pole, so it is used to help find the direction that the ship needs to go. 译文：译文：指南针有一个特殊的磁针，始指南针有一个特殊的磁针，始终指着北极。因此人们用它来帮助找终指着北极。因此人们用它来帮助找出船只所要去的方向。出船只所要去的方向。剖析剖析: pointer 是先行词是先行词, which 是引导词是引导词, 在从

37、句中作主语在从句中作主语, 引导后面定语从句引导后面定语从句always indicates the North Pole; so 引导引导后面的是结果状语从句后面的是结果状语从句; it 作形式主语作形式主语, 真正的主语是真正的主语是 to help find the direction; the direction 作为先行词作为先行词, that 是引导词是引导词, 引导定语从句引导定语从句 the ship needs to go。I. 根据下列各句句意及所给单词的首字母根据下列各句句意及所给单词的首字母或汉语提示或汉语提示, 写出各单词的正确形式。写出各单词的正确形式。1. The

38、 v_ from England to India used to take 6 months.2. A senior Chinese official said that China would actively plan its deep space _ (探险探险) over the next five years.voyageexploration3. Suddenly, the sun rose above the h_, and it looked just like a golden disk giving its dazzling sunshine.4. _ (海草海草), w

39、hich can be very tiny, or quite large, growing up to 30 metres long, are a fascinating and diverse group of organisms living in the earths oceans.horizonSeaweeds5. As the t_ receded we were able to look for shells. 6. She s_ the instructions so that the children could understand them easily.7. His b

40、ook on history contains many _ (提到提到) to George Washington. tidesimplifiedreferences8. He _ (存存) a sum of money in the bank each month. 9. The railway t_ shows the time when the trains arrive and depart.10. The _ (最低的最低的) wage is 4.25 dollars an hour.timetableminimumdepositsII. 用适当的介词填空。用适当的介词填空。1. I have nothing to say _ relation to that matter.2. The refugees were _ sea for forty days before reaching land.3. What will you do wh