高一英语必修三Unit 4

高一英语必修三unit4单词知识点高一英语必修三Unit 4 单词知识点Unit 4单词部分是高一英语必修三课程的重要组成部分。

本单元的单词涵盖了各个主题和不同语法结构，掌握这些单词将有助于提高学生的词汇量和英语表达能力。

下面是Unit 4中一些重要的单词及其释义和用法。

1. device (n.) - a tool or machine that has been invented for a particular purpose.Example: The latest smartphone is an electronic device that can perform various tasks.2. remote (adj.) - situated far away; distant.Example: The village was located in a remote area, accessible only by hiking or helicopter.3. astronomy (n.) - the scientific study of the stars, planets, and other celestial objects.Example: My brother is studying astronomy at university and hopes to become an astrophysicist.4. challenge (n.) - a difficult task or situation that requires effort and determination to overcome.Example: Climbing Mount Everest was the biggest challenge of her life.5. vivid (adj.) - producing clear and strong mental images; lively and intense.Example: The photograph brought back vivid memories of our childhood.6. hardship (n.) - severe suffering or deprivation.Example: Many people in developing countries face daily hardships such as a lack of clean water and food.7. spectacle (n.) - a visually striking performance or display.Example: The fireworks display on New Year's Eve was a spectacular spectacle.8. accompany (v.) - go somewhere with (someone) as a companion or escort.Example: I will accompany you to the concert so that you don't have to go alone.9. theoretical (adj.) - based on or calculated through theory rather than practical experience.Example: The scientist presented a theoretical explanation for the phenomenon, but more research is needed to confirm it.10. significant (adj.) - sufficiently great or important to be worthy of attention; noteworthy.Example: The discovery of a new species in the rainforest is a significant breakthrough in the field of biology.11. ambitious (adj.) - having a strong desire and determination to succeed or achieve something.Example: She has always been ambitious and dreams of becoming a successful entrepreneur.12. visualize (v.) - form a mental image of; imagine.Example: Close your eyes and try to visualize a peaceful beach with clear blue water and palm trees.13. abundant (adj.) - existing or available in large quantities; plentiful.Example: The garden was filled with abundant flowers and plants of various colors.14. identify (v.) - establish who or what (someone or something) is.Example: The police were able to identify the suspect through fingerprint analysis.15. navigation (n.) - the process or activity of accurately and efficiently operating and controlling a ship, aircraft, or spacecraft.Example: The GPS system provides accurate navigation instructions to drivers, helping them reach their destinations.以上是Unit 4单词的部分知识点，希望对你的学习有所帮助。

Unit 4 Astronomy: The Science of The StarsTeaching aims:1.Enable students to improve their listening skills and reading ability.2.Enable students to understand the development of gravity and how gravityaffects us in different times and places.3.Arouse students ’ interest to search for the mystery of space.Emphasis:1.Words and expressions: gravity, float, cheer up, now that, break out, etc2.Astronomic knowledge like gravity and black hole.Difficulties:1.Help the students to understand the development of gravity.2.Help the students to know how gravity influences us.Teaching methods:skimming, scanning, discussing.Teaching aids: tape recorder, a projector and a computer.Teaching procedures:Period one ReadingStep 1. PresentationT:Hello, everyone!odayT we ’ ll come to Unit 4 Astronomy. Before that I have a question: Where do we come from? Or we can say: Who are our ancestors?S1: Monkeys!S2: Beijing Ren who lived many years ago.S3: Reptiles.S4: Mammals.S5: Amphibians.S6: Dinosaurs.T: Very good! Can you put them in right order?S7: Amphibians, Reptiles, Dinosaurs, Mammals, Beijing Ren.T:Do you know what it was like before life appeared on earth?S8: It was full of water, perhaps.T: Before that, what was it like?S9: Sorry, I don’ t know.T: Do you want to get more information? Today we’ ll learn something about How Life Began the Earth. Turn to Page 25. Let’ s come to Warming up first.Step 2. Warming up1.Read the three questions, while the students listen and follow.2.Give the Ss several minutes to discuss the questions.3.Collect answers from the whole class.4.Check the answers while discussing.T:I ’ ll read the three questions for you. You should listen to me carefully. (If students don howto discuss, show them an example.) For example, medicine. When someone gets seriousillness, he will go to the hospital. The doctor will examine him. He will take his temperature, measurehis blood pressureand give him an X-ray, or a CT. For the whole process of the examination, what kind of science has been used?S1: Biology.S2: Chemistry.T:So we can say medicinecombinesbiologyand chemistry.What aboutbiochemistryand geophysics?S3: I think biochemistry combines biology and chemistry.S4: Geophysics combines geology and physics.T:What about astronomy?S5: Physics.S6: Mathematics.T:Very good. We should know that astronomy is a multidisciplinary subject and if we want todo some researchon it, we shouldknow many sciencesubjectsrelatedto it. Now discussthesecond question:Whatdo we mean when we say we are studying a subject scientifically? Or what’ s t attitude towards science?S7: We should be objective, not superstitious.T: What ’ s the correct way to prove a scientific idea?S8: We should design experiments to test it for several times.S9: Then we can analyze the results and draw a conclusion at last.T:Let ’ s sum up the answers. To study a subject scientifically, we must try to be objective. Inorder to test our idea, we shoulddesign experiments,then analyzethe results and draw a conclusion. Now let’ s talk about the third question.What are the most important skills we need to be real scientists?S10: We should be very careful.S11: Be objective and logical.S12: We should be wise enough to design an experiment and write the reports clearly.S13: We should be able to draw conclusions from the experiments and not imposeconclusions on the data.T: I think you have done great work. From the discussion we know that it’ s not e scientist. So you should work harder if you want to be a scientist.Step 3. Pre-readingGet the Ss to discuss the questions on Page 25 with their partners. Then ask the Ss to tell their stories. Encourage the Ss to tell different stories. If they don’ t know any, tell th T:Nowplease look at the slide show. And discuss these questions with your partners. ThenI ask some students to tell us their stories. Are you clear?Ss: Yes, Sir/Madam.1. Do you know each religion or culture has its own ideas about the beginning of the universe? Please give an example if you know.2. Do you know what a scientific idea is?After the Ss ’ discussion, teacher says the following.T:Now who ’ d like to tell us a story? Volunteer!S1: Let me try. In China, we all know that Pangu separates the sky from the earth.T:Can you describe the story in details?S1: Sorry, I can’ t remember clearly.T:Who can? Nobody? Now I ’ ll tell you. Look at the screen.Step 4. ReadingScanningGet the Ss to read the passage quickly and accurately and meanwhile helpSs thetoform agood habit of reading.Teachergives the Ss a coupleof minutesto look throughthe wholepassage. Tell the Ss to read the text silently and then ask some detailed questions aboutthe text on the slide show with their partners. Teacher shouldencourage the Ss to expresstheir ideas.T: We ’ re going to learn a passage about how life began on the earth. Now let ’ s show. Read the text quickly and find answers to the following questions. Show the questions on the screen.1.What was there on the earth before life could begin?2.Why do scientists think there has never been life on the moon?3.Why did animals first appear in the seas?4.Why did green plants help life to develop?5.Why were mammals different from other animals?T: Now who can answer the first one?S1: Water vapour, carbon dioxide, oxygen, nitrogen and other gases.T: What about the second one?S2: Because there is no water on the moon.T: What about the third one?S3: Because water allowed the earth to dissolve harmful gases into the oceans and seas.T: The fourth one?S4: Becausegreenplants can takecarbondioxidefrom the atmosphereand fill the airwith oxygen.T: What about the last one?S5: They were different because they produced their young from within their bodies.T: Well done! Now turn to Page 26 Comprehending1, I think you may continue to read it againto get more details.SkimmingIn this part, Ss will read the text again and then finish Part1, 2 and 3.T:Now please skim the passage fast to finish Part1. Then we will check the answer.Key to Part1: BCBBT:Skim Paragraph 2, 3 and 4, and finish Part 2 and 3.Key: DBIGEHACFJT:For Part 3, discuss them with your partner.T:Why is it wrong in films and stories to show dinosaurs and people together?S:Because dinosaurs died out long before human beings developed on the earth.T:Do you agree with him?S:Yes.T:What about the answer to the second question?S:They are the cleverest animals because they have larger brains than any other creatures on the earth so far.T:Excellent job! I ’ ll check how much you have learned about the passage. Step 5. ListeningListen to the tape for the students to follow and have further understanding of the passage. T:Read after the tape, then answer me some questions with your book closed.Play the tapeT:How did water come into being on the earth?If one student can’ t answer completely, ask two or three or more students.Ss: The explosion of the earth produced water vapor, which turned into water when the earth cooled down.T:Why is water important on the earth?Ss: Because water allowed the earth to dissolve harmful gases into the oceans and seas. T:No.3, finish the following form.1 small plants in2water3 green plants on land4insects(on land)576 forests89Key to the exercise:2.shellfish and all sorts of fish5.amphibian(on land and in water)7.reptiles (on land) 8.dinosaurs(on land) 9.mammals(on land)T: That’ s all for this passage. Now let’ s deal with some language points. ExplanationT: Turn to Page 25. Let’ s look at the sentences:1.It exploded loudly with fire and rock, which were in time to produce the water vapour. which leads non-restrictive attributive clause.in time: sooner or later;eventually I ’ ll see him in time.in time (for sth. /to do sth.): not lateShe will be back in time to prepare dinner.in / out of time: in/not in the correct time Theaudience clapped in time to the music.2.Nobody knew that it was going to be different from other planets going around the sun. be different from: not like someone or something else in one or more waysNote: We can use very, much, quite, entirely, totally to modifydifferent City life is quite different from country life.going around the sun is-ing form that serves as attributive.Men breaking the law will be punished.Can you see the girl dancing with your boyfriend?3.Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.to come: serves as attributiveShe is the last person to do such a thing.depend on: something might only happen or be true if the circumstances are right for it Our success depends on whether everyone works hard or not.4. Walking does need a bit of practice now that gravity has changed.now that: because of the fact thatNow that I’ m free, I can enjoy music for a while.Nowthat you’ ve grown up you can decide it yourself.Passage AnalyzingChart of the textHow life began on the earthwater 1 small plants in water2 shellfish and all sorts of fish4 insects (on land)4 insects(on land)5 amphibians (on land and in5 amphibians(on land and inwater)7 reptiles (on land)8 dinosaurs (on land)9 mammals (on land)Text RetellingRetell the text using about 100 words.Step 6. HomeworkRetell the passage according to the form.Remember important language points.3 green plants on land6forests10.small clever animalswith hands and feet11.humanPeriod two Extensive reading Step 1Show some pictures of the astronauts in the spaceStep 2Read the passage and fill in the formStep 3 Language pointsst month I was lucky enough to have a chance to make a trip into space with my friend Li Yanping, an astronomer.He couldn ’ t run quickly enough to catch up with the cat.2. Then we were off.be off = set offI am off today.We are off today.3get close to靠近，接近，指动态变化be close to距 ......近，指状态4.But when I tried to step forward I found I was carried twice as far as on the earth andfell over.1). “ A + be倍数+ + as +形容词原级 + as + B ” .This tree is three times as tall as that one.2).“ A + be倍数+ +形容词比较级+ than + B”The number of students in our school is three times larger than that in theirs.3).“ A + be倍数+ + the +名词(size, length, amount) + of + B”The newly broadened square is four times the size of the previous one.6.We watched, amazed as fire broke out on the outside of the spaceship as theearth increased.break out1)战争爆发2)发生争吵3)(火灾 )发生7.cheer up; cheer sb. up感到高兴振奋8.masses of 许多，大量9.get the hang of熟悉 ,掌握 ,理解10.exhausting (sth); exhausted (sb)Step 4 HomeworkCollect passages about gravity.Prepare for speaking.Period three Language Study Step 1. RevisionTranslate the following sentences1.你迟早会成功的。

必修第三册Unit 4单元写作指导与演练An argumentative essay about space exploration本单元的写作任务是观点对比类议论文。

此写作属于说服性议论文，是对某个议论对象提出见解或主张并说明理由，并使之信服的文章。

作者通过摆事实、讲道理、辨是非来确定其观点的正误，树立或否定某种主张，从而达到让读者信服或接受其观点或看法的目的。

其写法与一般议论文的写法相同，应注意以下三点:1在开头提出议题，也就是提出论点。

议题的提出要开门见山，不要拖泥带水，并且开头句往往是主题句。

2.在正文部分议论时要有充分的论据，可以运用列举事实、展示数据、提供事例、借助常识或利用亲身经历的方法。

正文部分是写作的重点，论证方法可以用归纳法、推理法、比较法等。

3.在结论部分发表自己的观点。

观点必须鲜明，不能模棱两可。

【小试牛刀】Recently, students in our class have had a discussion on whether space is worth exploring.30% of us think space exploration is not worthwhile. They think space is too far away from us and our daily life. And the money spent on space exploration can be used to solve the earth's problems such as starvation and pollution.On the other hand, 70% think space is worth exploring because we have benefited a lot from it, such as using satellites for munication and weather forecast. What's more, with further space research, we may solve the population problem by moving to other planets one day. Also, space research will enable us to find new sources to solve the problem of energy shortages on the earth.学校英文报征稿：给中国太空站（Tiangong Space Station）宇航员们的一封信。

Unit 4 Astronomy: the science of the stars一、短语翻译1. 及时; 终于_________________2. 下蛋_________________3. 产生; 分娩_________________4. 轮到某人; 接着________________5. 阻止; 制止_________________6. 感到高兴; 感到振奋________________7. 既然________________8. 突发; 爆发________________9. 密切注视; 当心; 提防________________10. 挡住(光线) ________________二、用括号里所给词汇的正确形式填空1. As we all know, a bad eating habit is ___________ (harm) to one’s health.2. There ______ (exist) a good way to solve the problem at present.3. This new country came into _____________ (exist) in 1951.4. The ________ (puzzle) look on her face suggested she was ________(puzzle) over the ____________ maths problem. (puzzle)5. I think it’s my turn _____________ (drive) the kids to school this week.6. I was still living in London when the war ________________(break) out.7. They ______________(make) it clear to the public that they did an important and necessary job.三、用适当的介词或副词填空1. As far I’m concerned, there is no harm ________ making an apology to him first.2. Light pollution does harm __________ the eyesight of animals.3. Even though she is a little girl, strange ideas always exist ______ her mind.4. The old man became seriously ill, he has only existed ______ milk ever since.5. He was trying to puzzle __________ why he had been brought to the house.6. If you keep on trying, you will succeed ________ time.7. Where the missing plane has gone still remains a puzzle _______ us.8. When I’m feeling sad, my mother tells me funny stories to cheer me ______.9. Cathy didn’t expect any award but was still there to cheer_________ her friends and praise their accomplishments.四、选用方框里所给词汇的正确形式填空________ to their health2. I’m in a __________ as to what to do next.3. If the train is ________, it should arrive at three o’clock exactly.4. We got to the hospital just ________ to see the newborn baby.5. With five hungry children seated round the table, the food disappeared _________.6. _____________dinner is ready, wash your hands.7. The new stadium built for the 2022 Beijing & Zhangjiakou Winter Olympics will be three times_________ the present one.8. It’s well _________ that Thomas Edison invented the electric lamp.9. Your support is important to our work. ________ you can do helps.10. It is often the case _________ anything is possible for those who hang on to hope.五、选用方框里所给短语的正确形式填空2. I now regularly __________ my phone to check a fact, watch a video, read weibo.3. The police car signaled to us to __________.4. They are _______________ those houses to make room for a new hotel.5. Everyone was very concerned whether he would _______________ or not.7. We had to ________________ the house as we had lost the key.8. He ________________ the chocolate and gave each child a small piece.9. They were arguing but ________________ when someone came into the room.10. Does everyone know what to do if a fire ________________?12. When it’s _________________, I am too excited to speak.13. The young parents had to _____________ to look after their sick baby.14. It’s _____________that this young man was none other than the old man’s son.六、完成句子1. Some boys are too crazy about playing games on the computer, and ___________ (这对他们的健康非常有害).2. ___________________________(使医生最困惑的) was that they could not find the cause of the disease.3. ___________________________(我们发现是不可能的) to climb to the top of the hill in such bad weather.4. ___________________________(他认为对他来说是重要的)to learn spoken English well.5. ___________________________________(既然你的工作已经做完了), you’d better have a rest.6. Paper produced every year is _________________________(重量的三倍) the world’s production of vehicles.七、翻译句子1. 他们的未来取决于他们在这些考试中的表现。

教学过程一、课堂导入Play a game to learn the names and positions of the planets:Venus is next to Mercury.Earth is the third planet.Mars is between Earth and Jupiter.Neptune is the furthest planet from the sun.Saturn is between Uranus and Jupiter.Mercury is closest to the sun.二、复习预习教师引导学生复习上节课所学知识点，（以提问、回顾的形式进行），针对上节课的作业进行讲评、订正、答疑，并通过对主语从句具体用法的分析和扩展导入本节课所要学习的课本知识的学习。

三、知识讲解考点/易错点1 重点单词与短语学习violent adj. 暴力的；猛烈的(回归课本P25)The earth became so violent that it was not clear whether the shape would last or not. [归纳拓展]violent criminals: 使用暴力的罪犯a violent attack: 猛烈的攻击a violent protest：强烈的抗议a violent struggle；激烈的斗争violent winds and storms 狂风暴雨violent toothache: 剧烈的牙痛in time及时；最后(回归课本P25)It exploded loudly with fire and rock. They were in time to produce carbon dioxide, nitrogen water vapor and other gases, which were to make the earth’s atmosphere.它（地球）巨大的爆炸喷出了烈火与岩石，最终产生了水蒸汽、二氧化碳、氧、氮和其他多种气体，从而形成了地球的大气层。