Unit_4_Astronomy_the_science_of_the_stars公开课课件

必修3Unit 4 Astronomy: the science of the stars要点梳理高效梳理·知识备考●重点单词1．astronomy n．天文学→astronomer n．天文学家2．system n．系统；体系；制度3．theory n．学说；理论→theoretical adj.理论上的4．globe n．球体；地球仪；地球→global adj.全球性的；全世界的5．violent adj.猛烈的；激烈的；强暴的→violence n．暴力→violently adv.猛烈地6．atmosphere n．大气层；气氛7．unlike prep.不同；不像→dislike vt.不喜欢8．presence n．出席；到场；存在→present adj. & n. & v．在场的；目前，现在；出席；颁发，授予9．harmful adj.有害的；伤害的→harm n．危害，害处→harmless adj.无害的10．exist vi.存在，生存→existence n．存在，生存11．puzzle n．谜；难题vt. & vi.(使)迷惑；(使)为难→puzzled adj.迷惑的→puzzling adj.令人迷惑的12．gravity n．万有引力；重力13．satellite n．卫星；人造卫星14．climate n．气候15．spaceship n．宇宙飞船16．pull n. & vt.拉(力)；拖；牵引力17．float vi. & vt.(使)浮动；(使)漂浮 n．漂浮物18．mass n．质量；团；块；大量；(复)群众●重点短语1．in time 及时；终于2．lay eggs 下蛋3．give birth to产生；分娩4．in one’s turn 轮到某人；接着5．prevent...from 阻止；制止6．block out挡住(光线)7．cheer up感到高兴；感到振奋8．now that 既然9．break out突发；爆发10．watch out密切注视；当心；提防11．cool down 冷却12．as well as 也；还有……13．depend on依靠；依赖，取决于14．get close to 靠近●重点句型1．This produced a chain reaction, which made it possible for life to develop. 这就形成一个连锁反应，使生命发展成为可能。

Unit 4 Astronomy: the science of the stars Unit 4 Astrn: the siene f the starsgraarTeahing gals1 Target languagea重点词汇和短语suffer, settle , realize , rr abut , have gt t, tie upb重点句子：He as ver disappintedhat it as t bee as a sterT save ne, u ust use as fe rds as pssiblePratise taling abut prbles in stud r lifeprble is… The diffiult is… truble is…The questin is… advie is… hat I thin abut it is…The fat is… suggestin is…2 Abilit galsLearn t use Nun lauses as the subet3 Learning abilit galsLet Ss learn h t use Nun lauses as the subetTeahing iprtant pintsthe use f Nun lauses as the subetTeahing diffiult pintsH t teah the Ss t learn t use Nun lauses as the subetTeahing ethdsLearn graar thrugh pratieTeahing aidsputerTeahing preduresStep 1 Revisin1he retelling f the passageThe explsin f the earth prdued ater vapr, hih turned int ater hen the earth led dn ater alled the earth t disslve harful gases int the eans and seas That ade it pssible fr life t begin t develp The arrival f sall plants enuraged the develpent f earl shellfish and all srts f fish an illins f ears later the first green plants began t appear n land Later land anials appeared Se ere insets thers, alled aphibians, ere able t live n land as ell as in the sea hen the plants gre int frests, reptiles appeared fr the first tie Later, dinsaurs develped The beae the st iprtant anials n the earth fr illins f ears After the disappeared, aals beae re iprtant The ere the last grup f anials and the ere different beause the prdued their ung fr ithin their bdies Sall lever anials, ith hands and feet, appeared and spread all ver the earth As tie ent b, the vered the earth and have bee the st iprtant anials n the planet2Translate the flling sentenes1你迟早会成功的。

Unit 4 Astronomy: the science of the stars教学案3第一部分教学设计Period 3 A sample lesson plan for Using Language(A VISIT TO THE MOON)IntroductionLanguage is learned to be used in and for communication. So in this period we shall have the students read, listen, write and speak in English, making use of the focused words, expressions, structures and topic ideas covered in this unit.The following steps can be ta ken: warming up by listening and reading aloud, understanding difficult sentences, reading and underlining, doing reading comprehension exercises, discussing, guided writing, acting a text play and closing down by filling a form.ObjectivesTo enjoy the passage A VISIT TO THE MOONTo learn to use the language by reading, listening, speaking and writingProcedures1. Warming up by listening and reading aloudLet’s listen to the recording of the text A VISIT TO THE MOON, and then read it aloud.2. Understanding difficult sentencesSkim the text A VISIT TO THE MOON and discuss in pairs the difficult points you find.3. Reading and underliningNext you are to read and underline all the useful expressions or collocations in the passage. Copy them into your notebook after class as homework.Collocations from A VISIT TO THE MOONbe lucky enough（足够幸运）, have a chance（有个机会）, make a trip（去旅行）, visit the moon （参观月球）, in the spaceship（在太空飞船中）, explain to…that…（向……解释……）, on the journey（在旅程中）, be off（启程）, rise into the air（升人太空）, feel the pull of the earth （感觉到地球的拉力）, call…gravity（称……为地球引力）, push…into the seat（把……推向座位）, say…to each other（向彼此说……）, fall back to…（朝……落下去）, fall from a tree （从树上掉下来）, fall to the ground（朝地上落下去）, get close to…（接近……）, feel…~ing （感觉到……正在……）, cheer up（高兴起来）, float weightlessly around（失重飘来飘去）, in the spaceship cabin（太空船舱）, watch…do（看着……做）, come on（来吧）, move freely （自由的活动）, grow tall（长高）, climb down the steps（从梯级上爬下来）, step forward（向前迈步）, fall over（摔倒）, need practice（需要练习）, after a while（过了一会儿）, get the hang of…（掌握了……的诀窍）, enjoy oneself（感到自如）, leave the moon’s gravity（摆脱月球引力）, return to…（返回到……）, break out（起火,爆发）, come back to…（回到……）4. Doing reading comprehension exercisesNow you are going to do exercises on page 31.5. DiscussingIn pairs discuss what you need to take if you would go to the moon.Lunar PuzzlersIf you're standing on the moon and the Earth is directly overhead, how long will it take for our planet to reach the moon's horizon? Make a shot at (guess) this and other lunar brainteasers.Last M an on the MoonGene Cernan, who left man's final footprint on the moon in 1972, describes what it was like to lift off from the launch pad, walk in space, spend three days exploring the lunar surface, and reenter the Earth's atmosphere.Hear the Space PioneersBuzz Aldrin on that first-ever landing. Jim Lovell on the terror of Apollo 13. Listen to the compelling stories of these and other Apollo luminaries who got us to the moon.OriginsThe moon is not made of green cheese but of bits of the Earth blasted in to outer space by a Mars-sized meteor, which struck our planet four and a half billion years ago or so, says the leading theory of how the moon came to be.6. Guided writingNext you are going to write a short article explaining at least three problems you might meet on the moon.Going To The MoonPlan your trip before you goHow will you get there?What will you need?Where can you buy things?At The MoonFind out what’s thereHotelsTransportSportGone To The MoonWhat happens when you come backPicturesReturning to gravityBuried on the moon7. Acting a text playIn groups of four turn the article HOW L IFE BEGAN ON THE EARTH into a text play. One of the group members is to be a space scientist, the other three the lovers of moon exploration. The winning group will be awarded.8. Closing down by filling a formMake use of the text A VISIT TO THE MOON to fill in the following form. Write in verb phrases to tell about the trip.A VISIT TO THE MOONBefore the trip be informed the three changes of the force of gravity; first change most powerful During the trip t ake off; feel the pull of the earth/or gravity; be pushed hard back to seat; talk when the weight lessen; too far to feel the pull; feel the gravity of the moon pulling; cheer up and float weightlessly aroundAfter landing excited when arriving; mass be less; move more freely; might grow taller to stay long enough; weigh less; be carried twice as far when step forward; fell over; get the hang of it; enjoyReturning to the earth leaving the moon not as painful while returning to the earth frightening;fire break out as gravity increase; be pushed hard into seats; exhausting but exciting;。

Unit 4 Astronomy：the science of the stars 课文知识点解析Warming UpDiscuss in pairs which science subjects are part of medicine,biochemistry,geophysics or astronomy.分组讨论哪些科学科目是医学，生物化学，地理学或天文学的一部分。

in pairs=two at a time=in twos一次两个，两个一组e.g.Shoes and slippers are sold in pairs.鞋子都是论双卖的。

注意：in+数词/名词（数词/名词以复数形式）e.g.in threes and fours 三三两两的in groups 成群的思维拓展in在这里表示：以……数量/形式、形状等。

e.g.Tourists queue in thousands to see the tomb. 游客数以千计排着队看陵墓。

Reading1.The problem was that the earth became violent because it was not clearwhether the solid shape was to last or not.这一问题变得越来越不确定，因为这一球体形状是否能够维持尚未明朗。

(1)violent adj. 猛烈的；激烈的；强暴的a violent language 激烈的语言a violent storm 猛烈的风暴a violent 猛攻思维拓展violence n.［U］1.暴力，强暴2.猛烈，剧烈，强烈(2)whether...or not... “是……还是……”在这里是主语从句,它还可以引导宾语从句、表语从句、同位语从句和状语从句。

e.g.I don’t know whether he will agree with me.（宾语）我不知道他是否同意我的观点。