Unit+4+Topic+2+Section+C 仁爱版九年级英语上册.pptx

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1、Unit 4 Amazing Science Topic 2 Section C学习目标学习目标预习检测预习检测知识梳理知识梳理课堂总结课堂总结学习导航重点探究重点探究当堂检测当堂检测新课导入新课导入Is Mars a good place for human beings to live?1.It_3 days_they arrived here.A.has been;before B.was;since C.has been;since D.is;ago2.He was_“Wu Shiliu”,in memory of his grandfather who was 56 years ol

2、d when he was born.A.name with B.named for C.name of D.named after3.Our hall is_theirs,and it wasnt used completely.A.as large as 3 times B.as 3 times as C.3 times as large as D.as 3 large times asCDC预习检测预习检测4.The girl standing_10 centimeters from the river bank is asking for help.A.at distance of B

3、.at a distance for C.at the distance for D.at a distance of5.It will_them 3 days_their destination.A.spend;reaching B.spend;on C.take;to reach D.take;getDC学习目标学习目标学习目标学习目标学习目标能熟悉并正确运用本课时的重点单词和短语能熟悉并正确运用本课时的重点单词和短语12能掌握含有分数，百分数等的同能掌握含有分数，百分数等的同级比比较3能能了解火星的相关知了解火星的相关知识知识梳理知识梳理Key phrases了解；知道情况 know a

4、bout以命名 name after转动，走访 go around 相隔 at a distance of的表面 the surface of被覆盖 be covered by/with在和之间 between and搜索，搜寻 search for花某人一段时间做某事 It takes sb.some time to do sth.land on Mars 登上火星go well （进展）顺利 during the journey 在旅程中whats more 另外，而且whats worse 更糟的是limit the use of 限制的使用be worth 值得every six we

5、eks 每六个星期Key points1.Mars is the fourth planet from the sun in our solar system and is named after Mars.火星是太阳系中离太阳第四远的行星，以火星命名。name.after 以的名字给取名 be named after 是被动语态 e.g.The baby was named after Bruce Lee.这个婴儿的名字是以李小龙的名字取的。2.Its diameter is 53%as wide as that of the earth.它的直径是地球直径的53%。倍数的表示法：倍数+as

6、+形容词或副词原级+as e.g.This box is five times as heavy as that one.这个盒子是那个盒子的四倍重。My house is three times as big as his.我家是他家的三倍大。3.Mars goes around the sun at a distance of about 228 million kilometers.火星在距太阳约228 000 000千米处环绕着太阳转。at a distance of 有距离 at a distance of 相隔 at a distance 在远处，有相当的距离 e.g.The mo

7、on goes around the earth at a distance of 380 000 km.月球在距地球38万千米的地方绕地球旋转。The police followed him at a distance.警察远远地跟着他。in the distance 在远处 e.g.That is Long Island in the distance over there.那边远处是长岛。4.You can tell which planet is Mars because it is bright red in the night sky.你可以分辨出哪颗行星是火星，因为它在夜空中是明

8、亮的红色。tell在这里为“辨别，区别，认出”，常和can,could,be able to连用。e.g.It was so dark that I couldnt tell it was you.天太暗了，我没有认出是你。5.The surface of Mars is covered by strong storms.火星表面被强烈的风暴覆盖着。be covered 被覆盖 be covered with 遮盖，遮蔽 e.g.The ground is covered with show.土地被雪覆盖。6.Scientists are still searching for more in

9、formation about Mars.科学家们正在对火星进行更多的探索。search for 寻找，搜索 e.g.All night they searched for the lost boy.整个晚上他们都在搜寻那个丢失的男孩。search for 寻找，搜索（强调有具体的目标）e.g.She searched many shops for Jims gift.为了送给Jim礼物，她搜索了很多店。search 在搜查；搜身。是个及物动词，后面直接跟 “被搜查的对象”。e.g.Mr.Smith searched every room in the house.史密斯先生搜索了房子里的每个

10、房间。探究一探究一探究一探究一了解火星的相关信息了解火星的相关信息1.Mars looks like a red ball.()2.The temperature on Mars is very high.()3.Mars is much larger than the earth.()4.Mars is too far away for us to reach.()TFFFLook at the pictures and predict which statements are true about Mars.Then read and check.What do you know abou

11、t Mars?What does it look like?Mars is the fourth planet from the sun in our solar system and is named after Mars,the Roman god of war.Its diameter is 53%as wide as that of the earth.Mars goes around the sun at a distance of about 228 million kilometers.You can tell which planet is Mars because it is

12、 bright red in the night sky.It looks like a red and orange ball.Its very beautiful.But during spring and summer,the surface of Mars is covered by strong storms.1a Read and understand.The gravity on the surface of Mars is about two-fifths as strong as it is on earth.So a person who weighs 90 kilos o

13、n earth weighs only 36 kilos on Mars.The temperature on Mars is between-138 and 28.The air has only 0.13%oxygen.It takes a spaceship about eight months to reach Mars from the earth when the two planets are closest to each other.Scientists are still searching for more information about Mars.Diameter

14、Color Shape Climate Gravity Distance from the sun 53%as wide as that of the earth red and orangea ball during spring and summer:strong storms temperature:between-138 and 28about two-fifths as strong as it is on earth about 228 million kilometers 1b Read 1a again and write down the information about

15、Mars.观察下列两个句子，找出倍数的表达方式。Its diameter is 53%as wide as that of the earth.The gravity on the surface of Mars is about two-fifths as strong as it is on earth.倍数的表示法：倍数/分数/百分数+as+形容词或副词原级+as1.Does Mars have a good climate for plants?2.Is Mars a useful place to dry fruit?3.Is Mars a good place for human

16、beings to live?4.Is Mars a comfortable place for heavy people?1c Discuss the crazy questions with your partner and state your reasons.What do you know about Mars？Does Mars have a good climate for plants?Its the2 Kangkangs uncle sent an e-mail to him from Mars.Choose the right words to complete the l

17、etter.Hi Kangkang,It has been two days_(since,from)we landed on Mars.It _(cost,took)us more than two years to_(reach,get)here.Generally,the journey went well,but the living conditions were_(quiet,quite)bad during the journey.We had to produce most of the food in the spaceship.sincetookgetquite_(What

18、s more,Whats worse),our water supplies were very low.We had to limit the use of water during _(those,these)days.So we had a shower every six weeks.We will spend another seven hundred and sixty-three days on Mars._(How,What)a long time!I often miss the family,but the excitement of being on Mars is wo

19、rth it!Wish me luck!Yours,Uncle StephenWhats worsethoseWhat3a Write back an e-mail to Uncle Stephen for Kangkang and ask him for more informationabout Mars.The list may help you.clothing;food and drinks;weather;transportation Dear Uncle,Im very glad to receive your e-mail,and I know that the living

20、conditions were quite bad during your journey.I am interested in the information about Mars.Can you tell me more about it?How about the weather on Mars?Is it very cold?What kind of transportation do you use there?Im looking forward to your e-mail!Good luck!Yours,Kangkang 通过以活动小结当堂当堂检测见检测见DCFDCF课课件件

21、通过以上的活动，我们可以知道：火星是太阳系中的_行星，直径是地球的_,火星表面的重力是地球的_，其温度处于_之间，空气中的含氧量仅为_.the fourth53%two-fifths-138280.13%当堂检测当堂检测一、根据句意及所给词的提示完成短文。Mars is n_ after the Roman god of war.Its the f _ planet of the solar system,goes around the sun at a _(距离)of about 228 million kilometers.Its d_ is 53%as wide as that of t

22、he earth.It looks like a red and _ball.Its very beautiful.But during spring and _(夏天),the whole _(s:fs)of Mars is covered _ strong storms.The gravity on the surface of it is about _(五分之二)as _(str)as it is on earth.ourthdistanceorangesummersurfacetwo-fifthsstrongiameteramed by课堂总结课堂总结能掌握含有分数，百能掌握含有分数，百分数等的同级比较分数等的同级比较了解火星的相关知识了解火星的相关知识 Unit 4 Topic 2Section C