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类型2019新人教版 高中英语 必修第三册UNIT4 Space Exploration Section C Discovering Useful Structures ppt课件.pptx

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    1、Section CDiscovering Useful Structures 再利用 2. n.肌肉;实力;影响力 3. n.缺乏;短缺vt.没有;缺乏 4. vi.浮动;漂流;漂浮vt.使浮动;使漂流 5. adv.否则;要不然 6. prep.在更远处;超出 7. adj.当前的;现在的n.水流;电流;思潮 8. adj.热衷的;渴望的 recycle muscle lack float otherwise beyond current keen 9.solar adj. 10.solar system 11.sufficient adj. 12.soap n. 13.towel n. 1

    2、4.microwave n.(also microwave oven) 15.tissue n. 16.facility n. 太阳的;太阳能的 太阳系;类太阳系 足够的;充足的 肥皂 毛巾;抹布 微波炉 纸巾;(人、动植物细胞的)组织 设施;设备 重点短语 1.figure out 2.in order to 3.be determined to do 4.get married 5.due to 6.stay healthy 7.keep sth under control 8.achieve ones goal 9.experiment with 10.give up 弄懂;弄清楚;弄明

    3、白 为了 决定做 结婚 由于 保持健康 控制;掌控 实现梦想 用做实验 放弃 重点句式 1.During a spacewalk,astronauts have to move slowly so that they can keep their bodies under control. 2.it would take over two years to get to the closest planet,Mars,and back. 重点语法动词不定式作定语和状语 .选词填空 otherwise,recycle,lack,beyond,float 1.They their garbage

    4、because they care about the environment. 2.The research solid evidence,and therefore,its conclusions are doubtful. 3.Can you tell the pupils why ships are able to on the sea? 4.We lost our way in that small village. we would have visited more places of interest. 5.I havent seen Sara since she was a

    5、little girl,and she has changed recognition. recycle lacks float Otherwise beyond .用所给动词的适当形式填空 M:I have something good 1. (tell) you,Jennifer. W:Whats it? M:After trying my best,I get a chance 2.(have) a ten-day paid leave! W:Wow! How I envy you! Do you have any plans? M:Paris is a good place 3.(go

    6、) sightseeing. W:You can take the chance 4.(travel) around Europe.After travelling France,you can have a tour of Switzerland by train. M:Its a good idea,but I think the best way 5.(get) there is by plane. to tell to have to go to travel to get 重点词汇 1.Astronauts bones and muscles can get very weak in

    7、 space due to the lack of gravity,so they need to exercise every day,which will help them stay healthy. 在太空中,宇航员的骨骼和肌肉会由于缺乏重力而变得非常脆弱, 所以他们每天都需要锻炼,这会帮助他们保持身体健康。 【词汇精讲】句中的lack是名词,意为“缺乏”;lack还可作动词,意为 “没有;缺乏”。 Despite his lack of experience,he got the job. 他虽然经验不足,但还是获得了这份工作。 We lacked concentration and

    8、 it cost us the goal and the game. 我们注意力不够集中,结果丢了球,输了比赛。 Certain vital information is lacking in the report. 该报告缺少某些关键信息。 【词汇拓展】 I find it quite boring to chat with those who are lacking in humour. 我发现和那些缺乏幽默感的人聊天很无聊。 More and more highrise buildings have been built in big cities for/through lack of

    9、 space. 由于缺乏空间,大城市中建造了越来越多的高层建筑。 【温馨提示】lack作名词时常与介词of连用;作动词时可作及物动 词直接加宾语(不能用于被动语态和进行时),也可作不及物动词,后 常与介词for连用;形容词lacking常与in连用。 2.Astronauts have to use tape to stick everything down while working in space because everything would float off otherwise. 宇航员在太空工作时必须用胶带把所有的东西都粘住,不然的话一 切都会飘走。 【词汇精讲】句中other

    10、wise是副词,意为“否则,要不然”。 其用作副词,还有下列意义: “另外;别样”,相当于differently或in another way; “相反地”,相当于in the other way或on the contrary; “在其他方面;除此之外”,相当于in other or different ways。 otherwise还可用作连词,意思为“否则;要不然”,相当于or,or else或if not。 Were committed to the project.We wouldnt be here otherwise. 我们是全心全意投入这项工作的,否则我们就不会到这里来了。 Y

    11、ou will have to go now;otherwise youll miss your bus. 你现在得走了,否则赶不上公交车了。 【词汇拓展】 有时otherwise可用在隐含的条件句中,句子用虚拟语气。 We didnt know his telephone number;otherwise we would have telephoned him. 我们不知道他的电话号码,否则我们就给他打电话了。 He is old and sick,otherwise he would be working right now. 他又老又病,否则他现在就在工作了。 3.Sending pe

    12、ople to other planets or even beyond the solar system is not an easy goal to achieve. 将人类送往其他行星甚至太阳系之外并不是一个容易实现的目标。 【词汇精讲】beyond是介词,具体用法如下: (1)后接表示空间的名词,意思是“在那一边,在之外”。如: He is from a village beyond the mountain. 他来自山那边的一个村庄。 The airport is around 30 miles beyond the city. 机场离城市大约30英里。 (2)后接表示时间的名词,意

    13、为“迟于,晚于”。如: Dont stay there beyond midnight. 不要过了午夜还待在那儿。 My father came home 30 minutes beyond the usual time that evening. 我的爸爸那天晚上回家比平时迟了30分钟。 (3)在句中表示“超出(能力、范围等),为所不能及”。如: The beauty of the scenery is beyond all description. 这风景美得无法形容。 Im sorry its beyond my power to make a final decision on the

    14、 project. 对不起,这项工程我无权做最终的决定。 (4)常用于疑问句和否定句中,表示“除了之外”。如: Ive nothing else to tell you beyond what you have already known. 除了你已经知道的以外,我再也没有什么要告诉你的了。 I didnt notice anything else at the party beyond his funny clothes. 我在聚会上没注意别的,只看到他那滑稽可笑的衣服。 【词汇拓展】 重点句式 1.During a spacewalk,astronauts have to move slo

    15、wly so that they can keep their bodies under control. 太空行走时,宇航员必须缓慢地移动,这样他们的身体才能得到控 制。 【句式剖析】so that=in order that,意为“以便”,引导目的状语从句, 从句中常用may,can,could等情态动词。 Leave your itinerary so that we can reach you in case of emergency. 请把你的旅行计划留下来,以便我们在遇到急事时和你取得联系。 Her parents pinched and scraped so that she c

    16、ould study singing abroad. 她父母省吃俭用好让她出国学习声乐。 【句式拓展】 so that也可引导结果状语从句,从句中一般没有情态动词。 He worked hard at his lessons,so that he gained high grades in the exams. 他努力学习,结果考试取得了好成绩。 2.it would take over two years to get to the closest planet,Mars,and back. 到达最近的行星火星,并返回,需要超过两年的时间。 【句式剖析】It takes/took sb so

    17、me time to do sth意为“做某事花费 某人时间”。 It takes a long time to get from London to Sydney. 从伦敦到悉尼要花很长时间。 【句式拓展】 Its going to cost me over 100,000 dollars to buy several new trucks. 买几辆新卡车将花掉我10万多美元。 I spent ten yuan on the book/in buying the book. =The book cost me ten yuan. =I paid ten yuan for the book.

    18、我花了10元钱买这本书。 重点语法 动词不定式作定语和状语 一、动词不定式作定语 不定式作定语通常放在其修饰的名词或代词之后,和被修饰的名词 或代词之间是主谓关系、动宾关系、同位关系或修饰关系等。 1.主谓关系 The future to greet us will be bright. 我们的未来会十分美好的。 He is always the first person to come and the last one to leave. 他总是第一个来,最后一个离开。 2.动宾关系 On Sundays,he always has a lot of letters to write. 星期

    19、天,他总是有许多信要写。 The teacher left us a lot of problems to solve. 老师给我们留了许多道题要解答。 He can find no one to make friends with. 他找不到可交朋友的人。 注意:由于动词不定式与其修饰的词之间往往有动宾关系,因此,如 果该不定式是不及物动词,其后应有必要的介词。 There is nothing to worry about. 没什么可担心的。 Brown has something important to deal with at present. 目前布朗有重要的事情要处理。 3.同位

    20、关系 He broke his promise to write to his parents regularly. 他没有遵守诺言定期给他父母亲写信。 We students should have the courage to face any difficulty. 我们学生应该有勇气面对任何困难。 4.修饰关系 Now it is time to begin our class. 现在是上课时间了。 I need somewhere to take a nap. 我需要一个地方打个盹。 Is that the way to open the can? 那就是打开罐头的方法吗? 二、动词

    21、不定式作状语 作状语用法例句 表示 目的 动词不定式 作目的状语 We work hard to be admitted into a key university. 我们努力学习以便进入重点大学。 in order to do 作目的状语 In order to pass the driving test,he practiced very hard. 为了通过驾驶考试,他努力练习。 so as to do作 目的状语 He got up very early so as to get to the airport on time. 他起得很早以便能按时到达飞机场。 作状语用法例句 表示 结

    22、果 only to do常 表示出乎意 料的结果 He hurried to the railway station only to find the train had left. 他匆忙赶到火车站却发现火车开走了。 .enough to do;too.to do;so.as to do He is old enough to join the army.他到了参 军的年龄了。 The girl is so kind as to help the old man. 那个女孩很善良,他帮助了那位老人。 表示 原因 to do直接表 示原因 He was astonished to hear t

    23、he news. 听到那个消息他很震惊。 Tom was very happy to be elected monitor of the class. 汤姆被选为班长很高兴。 .单词拼写 1.Keep your (肌肉) strong and it helps you to avoid back problems. 答案:muscles 2.There is (足够的) evidence to show that plastic bags have caused white pollution to the environment. 答案:sufficient 3.Something must

    24、 be done to change our (当前的) examination system. 答案:current 4.The hotel has special (设备) for welcoming disabled people. 答案:facilities 5.He transmitted his (热衷的) enjoyment of singing to the audience. 答案:keen .完成句子 1.She hurried to the meeting-room, (结果 却发现) that they have gone. 答案:only to find 2.The doctor was too busy (做手 术) the patient at that time. 答案:to operate on 3.The ice on the lake was not thick enough for people (在上面滑冰). 答案:to skate on 4.Your brother is too young (去) school. 答案:to go to 5.It is very important for students (学习) a foreign language. 答案:to learn

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