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
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。
2024九年级英语下册Unit4Period1课件牛津译林版
考点精讲
如果前面的句子是肯定句，一般用so，即“So+ 助动词/ 情态 动词/ 连系动词be+ 主语.”结构， 表示前面所说的肯定情况 也同样适用于后面的人或物， 意为“ 某人/ 物也一样”。
拓展：（1）“Neither +be 动词/ 助动词/ 情态动词+ 与前 句不同的主语.”结构也可以表示前者所描述 的否定情况适用于后者。
power pack
sleeping bag
space helmet
special boots
tent
B Daniel is talking to Amy about living on Mars. What would it
be like? Work in pairs and discuss with your partner. Use the
本节课主要学习了以下知识点, 请同学们及时巩固练习: Mars , helmet , dried food , sleeping bag, think about……
Amy: I hope so. ③
考点精讲
① Me neither.
考点1 Me neither. 我也不。 考向 “Me neither.” 意为“ 我也不/ 没有。”， 其中
neither是副词，意为“也不”，表示前者所描述的否 定情况也适用于后者，此时相当于“Neither have I.”。 e.g. —He hasn’t been to Shanghai. 他没去过上海。
e.g. —She can’t swim. 她不会游泳。 —Neither can I.（=Me neither.）我也不会。
考点精讲
译林版 初中九年级下册 Unit 4 Reading I ppt课件
Part 2 Problems of life on Mars
3. What would food on Mars be like? A. Very tasty. B. Very sweet. C. Not very tasty.
It would not be tasty. It would not taste good.
4. Would gravity be a problem on Mars? A. No, it’s not a problem. B. Yes. Many people would get lost . C. Yes, and people would wear special boots.
The boots are specially designed.
Two moons
(卫星)
Phobos and Deimos 火卫1和火卫2
The surface of Mars
The surface of Mars is a little like the surface of Earth.
The temperature of Mars
The lowest temperature will be -133℃ (degrees centigrade) and the highest will be 27 ℃
译林版英语九年级下册第四单元Task+课件
Mars
火星是太阳系九大行星之一，火星是距太阳的第 四个行星，它的体积在太阳系中居第七位，是类 地行星中距离太阳最远的一颗，位于地球和小行 星带之间，它外观呈现出火红色，因而非常引人 注目。火星有两颗小型天然卫星：火卫一和火卫 二。 火星的表面沙砾遍地，十分荒凉沉寂，遍布遭陨 星袭击后因撞击形成的坑坑洼洼。
Planet Mars Bank
two moons basketball games
online
shops malls space clothes
hard to find
comfortable no air pollution
floats in the air
You also want to write a guide to living on Mars. First, make a spidergram like Daniel’s on page 62. Then write the guide and include some drawings.
Now use your imagination:
What will life be like on Mars in the future?
Help Daniel complete the spidergram below to
organize his ideas.
F
B
E
H
D
G AC
Help Daniel complete draft. Use the information on page 62 to help you.
Mars
译林版英语九年级下册第四单元 知识点和练习
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?。
牛津译林版英语九年级下册 Unit 4 单词讲解 课件
Mars [mɑːz] n.
helmet [ˈhelmɪt] n.
air tank
dried food
power pack
sleeping bag
gravity [ˈɡræ vəti] n.
planet [ˈplæ nɪt] n.
crowded [ˈkraʊdɪd] adj.
possibility [ˌpɒsəˈbɪləti] n.
alien [ˈeɪliən] n.
stranger [ˈstreɪndʒə(r)] n.
carry out
percentage [pəˈsentɪdʒ] n.
disadvantage [ˌdɪsədˈvɑːntɪdʒ] n.
risk [rɪsk] n.
(advantage), so we must find some ways
Read after me
in the form of
carry out
tasty
percentage
specially
disadvantage
float
risk
compare
aftth goods
interpanetary
electronic
network
entertainment
oxygen [ˈɒksɪdʒən] n.
in the form of
tasty [ˈteɪsti] adj.
specially [ˈspeʃəli] adv.
float [fləʊt] v.
compare [kəmˈpeə(r)] v.
interplanetary [ˌɪntəˈplæ nɪtri] n.
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
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。
译林版九年级下册英语第四单元全套公开课教学PPT课件
4. She likes wearing a pair of s_u_n_g_l_a_ss_e_s_ (太 阳镜) to keep off the sun.
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.
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. I can’t get to my food.
Daniel needs to check the meanings of some words in the article. Help him match the words on the left with the meanings on the right. Write the correct letters in the blanks.
译林版英语九年级下册_Unit4_Reading精品课件
There is enough water There might not be enough
and oxygen.
water and oxygen.
Earth today
There are many kinds of tasty food.
Read and chose the best answer.
1 Why would people move to Mars?
a The Earth is crowded and polluted.
b People want to make friends with those from another planet.
a Fast and comfortable. b Fast but uncomfortable.
c Slow but comfortable. 4 What would food on Mars be like? a Very tasty. b Very sweet. c Not very tasty.
A for one purpose B a second time from the begin C decide in what way things are similar or different D having a nice taste E full of people F happening in a short period of time G a person who rides in a car, bus, train, etc. but does not drive it H the total number of people in an area, a country, etc.
译林版英语九年级下册第四单元知识要点
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。
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2(含习题和答案)
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。
2024年中考英语(江苏省盐城地区)教材考点梳理专练课件九年级下册Unit4
（ A ）4. We can learn from the last paragraph that
.
A. more and more ZQ-2 rockets will be launched
B. three ZQ-2 rockets have been launched by the company
一
二
三
四
At present， our spacecraft are too slow to carry large 2. numbers of passengers to Mars—it would take months. With the 3. development of technology， by the year 2100， the journey might only take about 20 minutes in spacecraft that travel 4. at the speed of light！ However， the spacecraft would travel really fast， so the journey to Mars might be quite 5. uncomfortable . Many people would feel ill.
一
二
三
四
The rocket’s main propulsion system（推进系统）—TQ-12—is the first methane engine inChina. Before LandSpace， only a few companies in the United States developed such engine. Compared with traditional types of rocket engines that can work only once， a methane engine is reusable and more environmentally friendly.
译林版九年级英语下册第四单元知识点
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。
译林版英语九年级下册第四单元Grammar课件
Period 3 Grammar
Unit 4 Life on Mars
Period 3 Grammar
课前自主预习
课堂互动探究
Period 3 Grammar
课前自主预习
1.知道，意识到 adj.__a_w_a_r_e__
单 2.疑惑，疑问 n ．_doub____t___
Period 3 Grammar
活学活用
(1)单项选择 2017•达州 —Is it ___D_____ cheaper and ________ enjoyable to
travel by train than by plane?
—Yes, I think so. A ．very; very more C ．more; much more
Period 3 Grammar
活学活用
(1)2017•丹东 Lucy often ___B_____ me ________ my best friend. They
both have long curly hair.
A ．thinks; of
B ．reminds; of
C ．helps; out
词 闯
→不同意 vi._d_is__a r_e_
关 6.可能性 n ．_p_o si_ i_li y_→可能的 adj.__p_o si_b_le__
→不可能的 adj.i_ _p ssibl____e
Period 3 Grammar
1.搬到另一个行星 mo_v_e_t__o a_no_t__h_e_r_p_l _net_ 短 2.在…… 岁时 __at__the___a_e_of__ 语 互 3.第一个做某事的人 the___fir__st m___an_to_do st_____h_ 译 4.因为 __be___c_a_u_se_of___
译林版英语9年级下册Unit 4 Life on Mars 课件1
People might live in houses which have huge comfortable rooms. People might live in houses with huge comfortable rooms. The man who wears a blue shirt is our English teacher. The man in a blue shirt is our English
ing adverbial clauses or simple sentences We can rewrite some adverbial clauses in simple sentences with prepositional phrases beginning with at the age of,because of and without.
We can rewrite some object clauses in simple sentences with prepositions like of and about.
Are they sure that space travel will be very fast?
Are they sure about the fast speed of space travel?
•I prefer to stay in a hotel room with a sea view.
•He can’t swim without help.
•He can’t swim if he has no help.
ing object clauses or simple sentences
Unit 4
掌握简单句和复合句 之间的转换。
译林版英语九年级下册第四单元知识点
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。
Unit4重要知识点讲解2020-2021学年牛津译林版九年级英语下册
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。
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9B Unit 4 第一讲【单词拓展】【知识点解析】1.Wow, I've never thought about travelling into space.think about，考虑。
about是介词，后可接名词、代词或动名词，作宾语；也可以接疑问词＋不定式结构或宾语从句。
表示“你认为怎么样” ，what do you think of=what do you think about=how do you like =How do you find 后可接名词代词或动名词。
拓展：你认为他的想法怎么样？How do you like / What do you think of /about idea?●think over，思考；考虑。
over是副词，如果代词作其宾语，则要将代词放在think 和over中间。
考虑一下，你就能找到办法。
2.Me neither.me neither，在此处neither副词，意思是也不, 也不是。
①常用于neither+助动词/情态动词/连系动词be＋主语结构，表示前面所说的否定情况同样适用于后面的人或事物，意思是某人/某物也不。
Mary can't swim. Neither can I.You didn't go to the park yesterday. Neither did Tom.②Neither可以作形容词，与单数名词连用，“两者都不”Neither answer is correct.两个答案都不对。
③Neither可以作代词，“两者都不”, 是both的反义词。
Neither of my friends has come yet. 我的两个朋友都没来。
拓展：Neither /nor和so 引导的倒装结构中的助动词/情态动词/连系动词be，应与前句的谓语部分，以及后面的主语，在人称和数上保持一致，时态和前句保持一致。
如果前面的句子是肯定句，一般用So＋助动词/情态动词/连系动词be+主语结构，表示前面所说的肯定情况，也同样适用于后面的人或事物，意思是某人物也一样。
They went to the zoo yesterday. So did we.They have been to shanghai. So has he.Neither of my friends has come yet.④Neither用作连词，常和nor 连用。
Neith er… nor…既不…也不，连接两个平行结构。
如果连接两个并列主语，谓语动词要遵循就近原则。
I can speak neither English nor Japanese.Neither he nor I have been to Beijing.3.What would it be like to live on Mars?What’s sb. like ? 意思是某人如何, 用于询问某人的性格品质等。
What does sb. like? 指某人喜欢什，用于询问某人的喜好.What does sb. look like ? 是某人长什么样，用于询问某人的外貌.翻译：What is mother like?What does she like?What does your sister look like?Can you tell me _________in the future?A how life will be likeB how will life will be likeC what life will be likeD what will life be like4.Some people believe that humans could live on the planet Mars by the year 2100.believe通常不用于进行时态，名词形式是belief.5.Our own planet, the Earth, is becoming more and more crowded and polluted because of therapid increase in population.(1)more and more crowded, 越来越拥挤，其结构是比较级＋and＋比较级，意为越来越……。
(2)polluted是形容词，意思是被污染的。
动词形式是pollute. 意思是污染。
名词形式是pollution，意思是污染, 污染物。
(3)rapid是形容词，意思是快的, 迅速的，副词形式是rapidly。
He made rapid progress in English.Our country is developing so rapidly that we can imagine what life in the future will be like.（4）increase.作及物动词。
意思是，增，增长。
后可跟名词。
也可作不及物动词。
increase to意思是，增加到。
increase by 增加了.The population of this city will increase to 1.1million.They have increased the price of the vegetables by ten percent.6.Here is what life there could be like.●完全倒装，又称为全部倒装，是指将句子中的谓语全部置于主语之前。
即Here位于句首，主语是名词时，用Here+谓语+主语结构。
此结构通常只用于一般现在时和一般过去式。
Then began a bit wall between the two countries.于是两国之间开始了恶战。
●部分倒装又称半倒装，是指将谓语的一部分，如助动词或情态动词，提至主语之前，而谓语动词无变化。
如果句中的谓语没有助动词或情态动词，主要需添加助动词do/ does/ did。
并将其置于主语之前。
Jim likes English. So does his brother.7.At present, our spacecraft are too slow to carry large numbers of passengers to Mars--it wouldtake months.●large numbers of表示许多, 大量的。
= a large number of. Number.前面可以加large or small等修士，以表示程度。
●the number of是……的数量。
后跟可数名词复数，作主语时，谓语动词一般用单数。
我们班学生的数量是50。
这本书有60页。
8.With the development of technology, by the year 2100, the journey might only take about 20minutes in spacecraft that travel at the speed of light!（1）Development.意思是，发育、成长、发展，进展是名词。
the development of………的发展/成长●Develop.是动词，意思是发展开发，生长发育。
●动词＋后缀，变成名词。
agree agreementimprove improvement,move movementdevelopdevelopmentdevelopingdeveloped(2) Journey: 长途陆路拓展：trip：短途短期tour :观光游玩travel:时长路远.（3）at the speed of 以……速度at the price of 以……价格at a high price高价at a low cost低成本.at full / high speed以全速高速,at ten degree centigrade 在十摄氏度.9.However, the spacecraft would travel so fast that the journey to Mars might be quiteuncomfortable. Many people would feel ill.（1）So……that……如此, 以至于，that引导结果状语从句。
So是副词，常用来修饰形容词或副词。
这个男孩跑得如此快，以至于我赶不上他.他气得说不出来一句话。
注意：当名词前有Many、much、few、little 等词修饰时，只能用so …that...（2）uncomfortable, 形容词, 不舒适的。
其中un是否定前缀，其反义词为舒适的，含否定前缀的单词，有unlucky, unknown, untidy, unusual, unfriendly, incorrect, impatient, impolite imperfect, illegal, irregular。
（3）陈述句中如果含有否定意义前缀或后缀单词，整个句子仍视为肯定。
其反意疑问句，遵循前肯后否的原则。
Your younger brother felt unhappy, didn’t he你弟弟不高兴不是吗？11.Moreover, scientists are not sure whether plants could grow on Mars.（1）be sure＋宾语从句，意思是确信，表示主句主语对宾语从句中所涉及的事物作出的判断。
sure.反义词是unsure ，副词形式是surely.We are not sure if he will make progress.This term. I’m sure that you are right.（2）be sure to do sth.必然会做某事。
be sure to do.用于祈使句中，不表示判断，而表示对对方的要求，意思是务必要一定要。
千万不要忘记（3）Be sure of /be sure about 确信，对……有把握。
12.Food would most probably be in the form of pills and would not be so tasty.(1)in the form of.以……的形式，为固定短语。
他以故事的形式把他的过去讲给我们听。
(2)tasty形容词，美味的，可口的。
13.Gravity could be another problem.（1）problem.多指有待解决的问题，特别是疑难问题，或令人疑惑的是人或情况。