江苏译林版英语九年级下册第4单元知识点解析讲义课件1(含习题和答案)

九年级英语译林版第四单元知识点英语作为全球通用语言的重要性日益凸显，九年级的学生们正处于英语学习的关键阶段。

译林版九年级英语教材第四单元是一个重要的学习阶段，涵盖了许多重要的知识点。

本文将对该单元的知识点进行探讨和总结。

首先，第四单元主要介绍了陈述句和疑问句的构成及使用方法。

在日常交流中，我们通常使用陈述句来表达自己的观点、描述事物或者给出指示。

而在询问问题时，我们则需要使用疑问句。

疑问句分为一般疑问句、特殊疑问句和选择疑问句等不同类型。

通过学习这些知识点，学生们可以更加准确地表达自己的想法和询问对方的意见。

其次，第四单元还介绍了一些日常生活中常用的交际用语和表达方式。

例如，当我们需要向对方提供帮助时，可以用“Can I help you?”来表示。

而当我们想要请求对方的允许时，可以使用“May I...?”或者“Do you mind if...?”等表达方式。

这些交际用语的学习可以帮助学生们更好地与他人进行交流，增进彼此间的理解和友谊。

此外，第四单元还涉及了一些动词的变位规则。

在英语中，动词的时态和语态变化很多，因此学生需要通过掌握动词的不同形式来正确地表达自己的意思。

英语中常见的动词时态包括一般现在时、一般过去时、一般将来时等。

此外，英语中还有被动语态、进行时和完成时等不同的语态形式。

通过学习这些动词变位规则，学生们可以提高自己的语法水平，使自己的英语表达更加准确和地道。

在第四单元的学习中，还有一个重要的内容是阅读理解。

阅读理解是英语学习中的一项重要能力，也是提高综合语言运用能力的重要手段。

通过阅读不同的文章，学生们可以了解不同的文化背景、思维方式以及社会现象。

在阅读理解过程中，学生们需要掌握一些技巧，如寻找关键词、理解上下文等，以帮助他们更好地理解文章的含义并正确回答问题。

总而言之，九年级英语译林版第四单元涉及了多个重要且基础的知识点。

通过学习这些内容，学生们可以提高自己的英语表达能力，并为进一步学习英语打下坚实的基础。

Unit 4 Life on Mars一、Comic Strip & Welcome to the Unit(一)(二)、对话1. Hobo: Wow, I’ve never thought about travelling into space.Eddie: Me neither.Hobo: How do you like life on Mars?Eddie: I hate it.Hobo: Why do you hate it? I thought you liked Mars.Eddie: It’s this helmet.Hobo: I can’t get to my food.2. Daniel: What would it be like to live on Mars?Amy: There’s less gravity on Mars. We’d probably need to wear special boots.Daniel: Yes. And we might need sleeping bags too.Amy: I agree. Also, there’s no fruit or vegetables, so we would have to eat dried food.Daniel: Well… that sounds quite boring! But there would be no pollution on Mars.Amy: I hope so.二、Reading((二)、课文Moving to MarsSome people believe that humans could live on the planet Mars by the year 2100. Our own planet, the Earth, is becoming more and more crowded and polluted because of the rapid increase in population. It is hoped that people could start all over again and build a better world on Mars. Here is what life there could be like.At present, our spacecraft are too slow to carry large numbers of passengers to Mars—it would take months. With the development of technology, by the year 2100, the journey might only take about 20 minutes in spacecraft that travel at the speed of light! However, the spacecraft would travel so fast that the journey to Mars might be quite uncomfortable. Many people would feel ill.Humans cannot survive without water, oxygen or food. So far, nobody knows whether there would be enough water or oxygen on Mars for people there. Moreover, scientists are not sure whether plants could grow on Mars. Food would most probably be in the form of pills and would not be so tasty.Gravity could be another problem. The gravity on Mars is only about three-eighths of that on the Earth, People would have to wear boots that are specially designed to prevent themselves from floating off into space.Compared with life on the Earth, life on Mars would be better in some ways. People would have more space. They might live in houses with huge comfortable rooms. Also, robots would do most of their work so that they could have more time to relax.There would probably be no schools on Mars. Every student would have a computer at home connected to an interplanetary network. They would study at online schools with “e-teachers”.Life on Mars would be interesting as well as challenging.三、Grammar：大声朗读背诵书后P79语法及例句简单句和复合句之间的转换（二）将复合句改为简单句1. I can’t pass the exam if you don’t help me.I can’t pass the exam ______your ______.2. Do you mind if I smoke here ?Do you mind ______ ______ here ?3. The teacher who is wearing glasses teaches us English.The teacher ______ glasses teaches us English.4. The girl who is dancing on the stage is my sister.The girl ______ on the stage is my sister.5. Don’t forget to turn off the gas before you leave the kitchen.Don’t forget to turn off the gas ______ ______ the kitchen.6. She won’t go to see the play because she has lost her ticket.She won’t go to see the play ______ ______losing her ticket.7. If you use your head, you’ll find a way.______ your ______, ______ you’ll find a way.8. If you don’t work hard, you won’t pass the exam.______ ______, ______ you won’t pass the exam.9. It seemed that he would catch up with others.He seemed ______ ______ up with others.10. I could swim when I was eight years old.I could swim______ ______ ______ of eight.11. He was late for school because it rained heavily.He was late for school ______ ______ the ______ rain.将简单句改为复合句1. Hurry up, or you’ll be late for the party._______ you _______ hurry up, you’ll be late for the party.2. The teacher asked us to come earlier.The teacher asked us ______ ______ ______ come earlier.3. The doctor put down the telephone , and hurried to Jim’s home.______ the doctor put down the telephone, he went to Jim’s home as ______ as possible.4. Don’t play basketball here, or you may break the window.______ ______ play basketball here, you may break the window.5. He came late because of the bad traffic.He came late ______ the traffic was ______ .6. He built a lab at the age of nine.He built a lab ______ ______ ______ nine.7. I can’t finish the work in time without your help .I can’t finish the work if ______ ______ ______ me .四、Speak up and Task(一)(二)、Speak upDaniel: Would you like to live on Mars , Sandy ?Sandy: I’m not sure if it’s worth the risk. It worries me.Daniel: Why? It would be quite safe .After all, humans have already been to the Moon. Sandy: Maybe you’re right ,but we might get ill from living there.Daniel: I don’t think so, Sandy. It’s just a different kind of life. It would be great to live on another planet .Sandy: What about all your friends here on the Earth if you go to Mars?Danel: I want you all to come too.Sandy: OK. If we all go together , it should be fun.(三)、Task (P63 Part B)On Mars, we use Mars dollars. We get about M$10 for every￥1 ,but we never see any of it! Mars dollars are electronic and are stored in the ⑴Planet Mars Bank. A very popular form of entertainment is online games .They make us feel like we are really inside the games! There are also many ⑵online theatres .There are ⑶two moons to visit, but most people may prefer to watch the amazing low-gravity ⑷basketball games instead.There are lots of ⑸shopping malls on Mars .They sell ⑹space clothes and food.Most things are cheap on Mars .Goods from the Earth are ⑺hard to find.The public transport system is ⑻comfortable and it produces ⑼no air pollution.If you want to drive ,you can buy a car which ⑽floats in the air!Life on Mars is interesting, isn’t it?。

苏教译林版九年级英语下册第四单元Unit4 Life on Mars 课文翻译及知识点详解一、单词：Mars /mɑz / *火星helmet /’helmt / *头盔air tank /e tæk / *氧气罐dried food /drad fud / 干粮power pack /’pa pæk / *电源包sleeping bag /’slip bæg / 睡袋gravity /’grævt / *重力planet /’plænt / 行星crowded /’kradd / *拥挤的polluted /p’ljutd / 被污染的increase /’ræpd / 快地，迅速地rapid /n’kris / 增加(all) over again /l ‘v ‘gen\ ‘gen /再；重新passenger /’pæsnd / 乘客at a/the speed of /æt \ð spid v / 以……的速度unfortable /n’kmf()tb()l / 使人不舒服的，不舒适的oxygen /’ksd()n / *氧气in the form of /n ð fm v / 以……的形式tasty /’test / 味道好的specially /’spel / 专门的，特地float /flt / *飘浮；漂浮pare /km’pe / 比较pare to/with /km’pe tu wð / 与……相比interplanetary /nt’plænt()r / *行星间的network /’netwk / *网络challenging /’tæln(d) / *挑战性的rapidly /’ræpdl / 快地，迅速地aware /’we / *知道，意识到circle /’sk()l / 围绕；将……圈起来agreement /’grim()nt / 一致，同意distance /’dst()ns / *距离；远处possibility /,ps’blt / 可能性alien /’eln / *外星人stranger /’stren(d) / 外来者，陌生人carry out /’kær at / 开展；执行percentage /p’sentd / *百分率；百分数disadvantage /dsd’vɑntd / *劣势，缺点，不利条件risk /rsk / 风险，危险after all /’ɑft l /毕竟goods /ɡdz / *（复）商品，货品electronic /lek’trnk / 电子的entertainment /ent’tenm()nt / *娱乐九年级英语下Unit4单词.mp3点击上方►收听单词发音二、课文翻译：Comic strip1.-Wow，I’ve never thought about travelling into space.哇，我从未想过到太空旅行。

9下Unit4 Life on Mars要点总结Welcome to the unit1get to + 地点（名词）get + 地点（副词）——到达、、、2get to + 物——拿到某物3be able to ——能够做某事4travel in space ——在太空旅行5live on other planet ——住在其他行星6in the future ——在将来7care for /look after / take care of ——照顾、、、8wear space helmets ——戴头盔9help sb、with sth 帮助某人某事 /help sb（to）do sth 帮助某人做某事10in the form of pills ——以药片形式出现11make sb、do sth ——让某人做某事12dream about/of sth dream about/of doing sth ——梦想做某事Reading13a（large） number of14become more and more crowded——变得越来越拥挤15first of all ——首先16take only a very short time ——花费很短时间17travel at half the speed of light ——以光的一半速度18at a speed of、、、以、、、的速度19need sth to do sth20produce the food and oxygen that we need ——生产我们需要的食物和氧气21the early settlers ——早期移民22float away into space ——飘入太空 / float in the air ——飘在空气中23various designs ——各种各样的款式24choose from 、、、挑选25compare、、、to、、、把、、、比作、、、compare A with B ——把A与B相比较compare with 、、、——与、、、相比26live in a dome with ten bedrooms——住在一个有十间卧室的圆顶屋里27have more time for our hobbies ——有更多的时间在我们的兴趣爱好上28connect、、、with、、、——把、、、与、、、相连connect 、、、to、、、——将、、、连接到、、、上be connect to、、、——、、、被连接到、、、29an interplanetary network ——一个行星间的网络30take exams ——进行测试31in many different ways ——用许多不同的办法32as tasty as 、、、和、、、一样美味33stop/prevent from doing sth ——停止做某事34under the control of computer ——在电脑的控制下35at any place ——在任何地方36increasing quickly ——快速增长37breathe fresh air ——呼吸新鲜空气38tie ourselves to theplanetGrammar39prepare to do sth ——准备做某事40be certain to do sth ——一定做某事make certain of、、、——把、、、弄清楚be certain + that 从句41leave out ——省略42send a space robot onto Mars ——送一个太空机器人到火星上43make this dream come true ——是这个梦想变成现实44be willing to do sth ——愿意做某事Integrated skills----Study skills45percentage of students who wanted to move away from the Earth ——想搬离地球的学生所占的百分比the percentage of sth + is + 数——、、、的百分比是多少percent：数 + percent —— n%数 + percent of sth/sb、46the advantages of living on Mars ——住在火星上的好处47at a disadvantage ——处于劣势48get ill from 、、、——因、、、得病49far away from ——远离、、、数量 + away + from、、、50miss the first part of the fill ——错过影片的第一部分51start with /begin with 开始做某事52a survey conducted in schools ——在学校里实施调查53move away from、、、/move out of 、、54be different from 、、、——与什么不同55be worry about + n、/v、ing worry about56be afraid of sth/doing be afraid to do sth57do harm to sb、be harmful to sb、harm sb 伤害某人58have sb do sth ——让某人做某事59complete a circle around the sun ——完成绕太阳一周task60float in the air ——飘在空中61low-gravity basketball games ——低重力篮球运动62air pollution caused by traffic ——有交通产生的污染63keep them away with laser light ——用激光使他们走开keep sth/sb away from sth ——使某人某物远离某个东西64be hard to do sth——很难做某事65be worth doing sth ——值得做某事66a guide to living on Mars ——一张火星生活指南67arrive on Mars ——到达火星68be angry with sb ——对某人生气69a very popular form of entertainment ——一种很流行的娱乐形式70feel like doing sth = would like to do sth71the public transport system ——公共交通系统72take off ——起飞73sit by the window ——坐在窗户边。

9B Unit 4 第二讲__________________________________________________________________________________ __________________________________________________________________________________【重点】【难点】火星头盔氧气罐干粮电源包睡袋重力n.行星拥挤的adj.被污染的adj.快的，迅速的n.增加再；重新再；重新n.乘客以……的速度adj.使不舒服的;不舒适的氧气以…的形式味道好的adv.专门地，特地飘浮；漂浮vt.比较与……相比行星间的网络挑战性的adv.快地，迅速地知道，意识到vt.围绕；将…圈起来一致，同意【知识点解析】1.The smells of the pills reminds them of the tasty food on the Earth.(1)Smell smelt smelt/ smelled smelled(2)Remind v. 提醒，使想起。

常与介词about或of连用。

remind sb. of sth. 使某人想起某事remind sb. about sth 提醒某人某事remind sb. to do sth 提醒某人做某事remind sb.＋that从句/what从句，提醒某人或使某人想起。

请你提醒他我们的会议推迟了好吗？2.Are you aware how far Mars is away from the Sun?Aware作adj.，知道的、察觉的。

常用用法是be aware of＋n.、代词、动名词。

（1）be aware+从句. aware常被adv. well，quite，fully修饰.I’m well aware that this is a tough job.（2）aware的n.是awareness，察觉, 意识There is a general awareness that smoking is harmful.3.It takes Mars about two Earth years to circle around the Sun once.（1）circle此处用作不及物v.，围绕, 环绕.Circle around让……运转。

9b Unit4Life on Mars4.1Comic strip&Welcome to the unit【知识点精讲】【词汇点拨】●1think about思考；考虑[观察]I've never thought about travelling into space.我从未想过到太空旅行。

[辨析]think about,think of与think over词条含义用法think about思考；考虑；想到；认为about和of都是介词，常接名词、代词或动名词作宾语。

表示“考虑；认为”时，think about和think of可互换。

think of想出，想起；认为；考虑think over仔细考虑，慎重思考over是副词，当代词作宾语时，应放在think和over之间。

What do you think about/of this study？你认为这项研究怎么样？I often thought about what you said.我常常想到你说过的话。

Lei Feng was always thinking of others.雷锋总是为别人着想。

It's difficult to say.Let me think it over.这很难说，让我仔细想想。

[拓展]含有think的其他短语：think highly of对……高度评价think up想出think little of轻视……；对……不假思索●2neither ad v.也不[观察]—I don't like the film.我不喜欢这部电影。

—Me neither.我也不喜欢。

[探究]口语中的“Me either.”或“Me neither.”均可翻译为“我也不……”，表示前面的否定情况也适用于后者，两者一般可互换。

—I can't swim.我不会游泳。

—Me either.我也不会。

9Bunit4备课Welcome1.火星生活life on Marson Marson the Earth2.从没想过太空旅行have never though about travelling into spacethink of/about doingtravel into spacein space3.我也没（3）Me neither.Me either.Neither … I.4.你认为火星上生活如何？How do you like…?What do you think of…?5.我原以为你喜欢。

I thought + 从句（从句用过去时态）6.够到。

get to/reach7.住在其他星球live on other planets8.梦想着去另一个星球dream about/of doing9.火星重力小。

There is less gravity on Mars.10.不会有污染。

There would be no pollution.would，could表示想象的可能性11.I hope so. I hope not.I’m afraid so. I’m afrai d not.I think so. I don’t think so.Reading12.到下个世纪by the nest centuryby + 将来时间将来时by now=so far 现完by 2009 过完13.变得越来越拥挤more and more14.因为人口增长迅速because of the rapid increase in populationthe increase in sth.15.有望。

It is hoped that…16.重头开始start all over again太慢没法载大量的乘客去往火星too slow to carry large numbers of passengers to Mars① large numbers of 大量的，也可以说a large number ofa large number of +名词复数，做主语，动词用复数；the number of +名词复数，做主语，动词用单数。

Unit 4 Life on Mars重要知识点讲解Welcome to the unit一、重点表达私人文件private papers被熨烫平整be smoothly ironed让……感到满意be satisfied with免费for free……的价格the price of请人检查某物have sth. checked给某人接通电话put sb. through一封投诉信a complaint letter最多at most后悔做了某事regret doing sth.接受我们的新产品accept our new product达到标准up to standard首先first of all让它试一试first of all期待做某事look forward to doing sth.Reading一、重点表达all over again 再一次at a/the speed of 以……的速度in the form of 以……的形式compare with 与……比It is hoped that… 人们希望Here is what life there could be like. 这就是那里的生活。

Our spacecraft are too slow to carry…我们的飞船太慢了而不能……Robots would do most of their work so that… 机器人会做大部分的工作，以便……air tank 氧气罐dried food 干粮power pack 电源包sleeping bag 睡袋(all) over again 再；重新all a/the speed of 以……的速度in the form of 以……的形式compare to/with 与……相比二、Our own planet, the Earth, is becoming more and more crowded and polluted.我们自己的星球——地球，正变得越来越拥挤和污染。