B3Unit4Astronomy語言點學案及答案

1、高一英語必修3Unit 4 Astronomy: the science of the stars ReadingLanguage Points學案主編：苑穎審核:編號：3402 班級:姓名:使用日期:【學習目標】：1. To learn some useful words and expressions in the text.2. To learn some important and difficult sentence patterns in the text.【Teaching procedure】、【課前預習】I. Write and Read .1.太陽系2.普遍為人們所接受的理

2、論3.及時；終于4.地球的大氣層5.對生命的發(fā)展起關(guān)鍵作用一系列的反應(yīng)7.生產(chǎn)；分娩9.輪到某人，接著10.防止/阻止做II.【復雜句子分析】Analyze the following difficult sentences in the text.1. What it was to become was uncertain until between 4. 5 and 3. 8 billion years ago when the dust settled引導主語從句，在into a solid globe.句式分析： 這是一個 （A.簡單句 B復合句）。.從句中作 。what引導的名詞性從

3、句除了作主語外，還可以作賓語、表語等。自主翻譯:2. The earth became so violent that it was not clear whether the shape would last or not.句式分析：這是一個 （A.簡單句 B復合句）。此處為連詞 引導的結(jié)果狀語從句，其中從句中的 為形式主語，連詞 引導的從句為真正的主語。自主翻譯：.3. So whether life will continue on the earth for millions of years to come will depend on whether this problem ca

4、n be solved.句式分析：這是一個（A.簡單句 B復合句）。第一個whether引導;第二個whether引導。自主翻譯：。二.【課堂探究】 Language points -Exploring & Learning 倉單詞一1. violent adj.猛烈的；激烈的；強暴的宀 n.暴力；暴行；激情 宀adv猛烈地 語境感悟 (1)(教材 P25)The earth became so violent that it was not clear whether the shape would last or not.即時跟蹤即時跟蹤用violent的適當形式填空/完成句子.L

5、arry was inpain. As a result , he behavedand treated everything with.2. harmful adj.有害的語境感悟 (教材 P26)What many scientists believe is that the continued presenee of water allowed the earth todissolve harmful gases and acids into the oceans and seas.歸納拓展(1)be harmful to.對有害(2) harm n.損害；傷害；vt.對有害；傷害；損害

6、do sb. harm(good)/do harm(good)to sb.對某人有害(好)處There is no harm in doing sth. = It does no harm to do sth. 做某事無害處(3) harmless adj.無害的即時跟蹤同義句轉(zhuǎn)換/完成句子Watching TV too much does harm to your eyes.Watchi ng TV too muchyour eyes.Watchi ng TV too muchyour eyes.3. exist vi.存在；生存語境感悟(1)(教材 P26)They laid eggs t

7、oo and existed on the earth for more than 140 million years.(2) There exists a tall tree in front of my home. 在我家門前有一棵很高的樹。(3) Do you kn ow whe n this kind of robot came into existence?爾知道這種機器人是什么時候問世的嗎？歸納拓展(1)exist in.存在于 中 exist on.靠生活/生存exist as 作為而存在；以 形態(tài)而存在 There exists.存在；有(2) existence n .存在；

8、生活in existence現(xiàn)存的；現(xiàn)有的come into existence產(chǎn)生；成立；開始存在注意：exist沒有被動語態(tài)和進行時。即時跟蹤單句語法填空 He does n't believe in the(exist) of ghosts(鬼). Dino saurs(exist) on the earth a long time ago.4. puzzle n.謎；難題；vt. & vi.(使)迷惑；(使)為難語境感悟 (1)(教材 P27)How life began on earth is one of the biggest puzzles that scien

9、tists found hard to solve.地球上生命的起源是科學家們難以解決的最大難題之一。歸納拓展（1）be in a puzzle感到困惑；不知如何是好puzzle about/over冥思苦想；苦苦思索（2）puzzling adj.令人迷惑的（3）puzzled adj.感到迷惑的be puzzled about 對迷惑不解（4） puzzlement n.迷惑；費解即時跟蹤用puzzle的適當形式填空/完成句子。 Theboyhis mother，so there was aexpression on her face. Much to theof his mother，

10、he left home without saying a word.1* III III III I llllll I III III I III I?矢豆了吾1. in time及時；終于；遲早；總有一天語境感悟 （1）（教材 P25）They were in time to produce carb on dioxide , n itroge n , water vapour and other gases, which were to make the earth's atmosphere.歸納拓展be in time for sth.來得及趕上be in time to do

11、 sth.及時做某事on time準時；按時at a time 一次；每次at one time曾經(jīng)；一度at times有時；偶爾in no time馬上；立刻 at no time絕不（置于句首時，句子常用倒裝）即時跟蹤根據(jù)提示選擇有關(guān)time的短語填空。 I feel him a little stubborn（有時）. Fortunately , a soldier came to rescue（及時）to save the drowning boy. Hurry up ! The concert will begin （馬上）2. give birth to 產(chǎn)生；分娩語境感悟 （1

12、）（教材 P26）These animals were different from all life forms in the past , because they gave birth to young baby ani mals and produced milk to feed them.【即時練習】她生了雙胞胎。She the twins last night.3. in one's turn輪到某人；接著語境感悟 （1）（教材 P26）Thus they have, in their turn , become the most important animals on

13、the planet.歸納拓展in turn依次；輪流；相應(yīng)地；轉(zhuǎn)而；反過來by turns 輪流；交替 take turns to do/in doing sth. 輪流做某事It's one's turn to do sth.輪到某人做某事即時跟蹤單句語法填空/完成句子 They should take turnslooking after their old mother. We do some cleaningturns. She will, inturn, be on duty tomorrow. The children took their turns（paint

14、） the wall.4. prevent. . . from. 阻止做某事語境感悟(1)(教材 P26)They are putt ing too much carb on dioxide into the atmosphere , which prevents heat from escap ing from the earth into space.prevent + 賓語+doing Sth歸納拓展stop+ 賓語+from doing sth.匸阻止-做某事keep+ 賓語+ from doing sth.丿keep sb. doing.使某人一直做 注意：在 keep sb. /s

15、th. from doing sth.中，from 不可省略，因為 keep sb. /sth. doing sth.意為讓一直做某事”；而prevent/stop sb. /sth. from doing sth.用于主動句中時， 其中的from均可省略，但是變成被動語態(tài)時 from不可省略。即時跟蹤單句語法填空/完成句子 Soldiers have been sent to prevent the fire(spread) to the next building. I don't want to be here any longe； they have kept us(wait)

16、 for them fora long time. The plan can be preventedbeing carried out.三.【課堂鞏固】單句語法填空1. (multiply) very fast , rabbits soon became the largest family of all the animals inthis woods.2. I waspuzzle) about how to handle the situation.3. The thief attached meviolent) and I was knocked down before I could

17、 ask for help.4. After Yang Liwei succeeded in circling the earth , our astronauts desire to do is walking inspace.5. Do they existvegetable food?6. Your smoking can be_ (harm) to the health of your children.7. The animal gives birthyoung baby animals in the ocean.8. I was preventedattending the mee

18、ting by a cold.Unit 4 Astronomy: the science of the stars ReadingLanguage Points學 案一參考答案主編：苑穎 審核：陳建勝 編號：3402 班級： 姓名： 使用日期： 【學習目標】：1. To learn some useful words and expressions in the text.2. To learn some important and difficult sentence patterns in the text.【Teaching procedure】I. 【課前預習】Write and Re

19、adI. solar system 太陽系2. a widely accepted theory普遍為人們所接受的理論3. in time 及時；終于4. the earth's atmosphere 地球的大氣層5. be fundamental to the development of life對生命的發(fā)展起關(guān)鍵作用6. a chain reaction 一系列的反應(yīng)7. lay eggs 下蛋8. give birth to 生產(chǎn)；分娩9. in one ' s tur輪到某人，接著 10. preventfrom doing sth.防止/阻止做II. 【復雜句子分析

20、】Analyze the following difficult sentences in the text.1. What it was to become was uncertain until between 4. 5 and 3. 8 billion years ago when the dust settled into a solid globe.句式分析：這是一個B復合句（A.簡單句 B復合句）。what引導主語從句，在從句中作 賓語。what 引導的名詞性從句除了作主語外，還可以作賓語、表語等。自主翻譯：隨后它會變成什么沒人能知道，直到4538億年前，這團塵埃才慢慢地形成一個固

21、體的球狀物。2. The earth became so violent that it was not clear whether the shape would last or not.句式分析：這是一個B復合句（A.簡單句 B復合句）。此處為連詞so. . . that.引導的結(jié)果狀語從句，其中從句中的it為形式主語，連詞 whether引導的從句為真正的主語。3. So whether life will continue on the earth for millions of years to come will depend on whether this problem can

22、 be solved.句式分析：這是一個B復合句（A.簡單句 B復合句）。第一個whether引導主語從句；第二個whether 引導賓語從句。自主翻譯：所以，在未來的數(shù)百萬年中，生命能否在地球上延續(xù)取決于這個問題能否得到解決。III.【課堂探究】 Language points-Exploring & Learning ©©單詞 2. violent adj.猛烈的；激烈的；強暴的宀 violence n.暴力；暴行；激情 宀violently adv.猛烈地即時跟蹤用violent的適當形式填空/完成句子 Larry was in violent pain. A

23、s a result , he behaved violently and treated everything with violence.2. harmful adj.有害的即時跟蹤同義句轉(zhuǎn)換/完成句子Watching TV too much does harm to your eyes.Watching TV too much is harmful to your eyes.Watching TV too much harms your eyes.3. exist vi.存在；生存即時跟蹤單句語法填空 He doesn't believe in the existence（exi

24、st） of ghosts鬼）. Dinosaurs existed （exist） on the earth a long time ago.4. puzzle n.謎；難題；vt. & vi.（使）迷惑；（使）為難即時跟蹤用puzzle的適當形式填空/完成句子The puzzling boy puzzled his mother, so there was a puzzled expression on her face. Much to the puzzlement of his mother, he left home without saying a word.I J1. i

25、n time及時；終于；遲早；總有一天即時跟蹤根據(jù)提示選擇有關(guān)time的短語填空。 I feel him a little stubborn at times. Fortunately, a soldier came to rescue in time to save the drowning boy. Hurry up ! The concert will begin in no time.2. give birth to 產(chǎn)生；分娩【即時練習】她生了雙胞胎。She gave birth to the twins last night.3. in one's turn輪到某人；接著即時跟蹤單句語法填空/完成句子 They should take turns in looking after their old mother. We do some clea ning by turns. She will , in her turn, be on duty tomorrow. The children took their turns to paint (paint) the wall.4. preventfrom阻止做某事即時跟蹤單句語法填空/完成句子 S