人教版高一必修三unit4-reading一等獎優(yōu)秀課件

1、How life began on the earthReadingHow life began on the earthRea人教版高一必修三unit4-reading一等獎優(yōu)秀課件人教版高一必修三unit4-reading一等獎優(yōu)秀課件人教版高一必修三unit4-reading一等獎優(yōu)秀課件人教版高一必修三unit4-reading一等獎優(yōu)秀課件人教版高一必修三unit4-reading一等獎優(yōu)秀課件人教版高一必修三unit4-reading一等獎優(yōu)秀課件1.Read the passage carefully and analyse its structure .Write down t

2、he main idea for each paragraph1.Read the passage carefully aMain body The first part:Paragraph 1: A widely accepted theory about the foramation of the universeMain body The first part:The second part:Paragraph 2: The formation of the earthParagraph 3: the importance of water for lifeParagraph 4: Th

3、e development of plants and animals on the earth人教版高一必修三unit4-reading一等獎優(yōu)秀課件The third part:Paragraph 5: The arrival of humans and their impact on the earth The third part:Paragraph 5: Th1.How were stars and other bodies created?A. Atoms combined to create themB . Clouds of dust combined to create th

4、emC . Water combined to create themD . Gases combined to create them1.How were stars and other bod2 . Which is the most important for life appearing on the earth?A . Fire B . RockC. Water D .Clouds C. Water2 . Which is the most importan3 . It can be known from the passage that _A . Plants and animal

5、s appeared on the earth at the same time B . Plants appeared later on the earth than animalsC . Early shellfish apprared rarlier than plantsD. Animals appeared later on the earth than plantsD3 . It can be known from the p4 . How many years did dinosaurs exiast on the earth?A . More than 140 billion

6、years B. More than 140 million years C . More than 140 thousand yearsD . More than 140 yearsB. More than 140 million years4 . How many years did dinosau5 . Why can the earth become too hot to live on?A . Small clever animals produce more heat B. Small clever animals produce too much carbon dioxideC

7、. Small clever animals dont want heat to escape from the earthD . Small clever animals like to live on a hot planetacdbb5 . Why can the earth become tExercise 3. Think about what you have read and discuss these questions in pairs1. Why was the earth diffeent from the other planets ?Because the water

8、 remained on the earth2 . Why did the plants grow beforte the animals came?Because plants provide oxygen for animals to breatheExercise 3. Think about what 3 . Why is it wrong to show films with dinosaurs and people together ?Because dinosaurs died out long before human beings developed on the earth

9、 65 million years ago the age of dinosaurs ended4 . There used to be nine planets in the solar system.Recently scientists have decided that one fo them can no longer be considered a planert. Do you know the name of that planet ? Do youknow why they removed it ?3 . Why is it wrong to show fiPluto The

10、 name is Pluto (冥王星). Scientists now think its too small to be called a planetPluto The name is Pluto (冥王星).Background Information 天文學家先后發(fā)現(xiàn)冥王星與太陽系其他行星的一些不同之處。冥王星所處的軌道在海王星之外，屬于太陽系外圍的柯伊伯帶，這個區(qū)域一直是太陽系小行星和彗星誕生的地方。20世紀90年代以來，天文學家發(fā)現(xiàn)柯伊伯帶有更多圍繞太陽運行的大天體。比如，美國天文學家布朗發(fā)現(xiàn)的“2003UB313”，就是一個直徑和質(zhì)量都超過冥王星的天體。大會通過的決議規(guī)定，“行

11、星”指的是圍繞太陽運轉(zhuǎn)自身引力足以克服其剛體力而使天體呈圓球狀、能夠清除其軌道附近其他物體的天體。在太陽系傳統(tǒng)的“九大行星”中，只有水星、金星、地球、火星、木星、土星、天王星和海王星符合這些要求。冥王星由于其軌道與海王星的軌道相交，不符合新的行星定義，因此被自動降級為“矮行星”。 Background Information 天文學家人教版高一必修三unit4-reading一等獎優(yōu)秀課件5. What problem is caused by human beings?Human beings cused global warming5. What problem is caused by

12、h 溫室效應主要是由于現(xiàn)代化工業(yè)社會過多燃燒煤炭、石油和天然氣，這些燃料燃燒后放出大量的二氧化碳氣體進入大氣造成的。 二氧化碳氣體具有吸熱和隔熱的功能。它在大氣中增多的結(jié)果是形成一種無形的玻璃罩，使太陽輻射到地球上的熱量無法向外層空間發(fā)散，其結(jié)果是地球表面變熱起來。因此，二氧化碳也被稱為溫室氣體。 為減少大氣中過多的二氧化碳，一方面需要人們盡量節(jié)約用電（因為發(fā)電燒煤，少開汽車。另一方面保護好森林和海洋，比如不亂砍濫伐森林，不讓海洋受到污染以保護浮游生物的生存。我們還可以通過植樹造林，減少使用一次性方便木筷，節(jié)約紙張（造紙用木材，不踐踏草坪等等行動來保護綠色植物，使它們多吸收二氧化碳來幫助減緩溫

13、室效應。 language pointslanguage pointsWidely - 抽象形容詞 翻譯為 廣泛的Wide -具體形容詞 翻譯為寬的Eg. Its a wide desk.Accepted -過去分詞 作定語 修飾 theory 相當于一個定語從句According to a widely theory (which was) acceptedTheory (n): 學說，理論 Theoretical (adj); throretically(adv)Widely - 抽象形容詞 翻譯為 廣泛的Big Bang!Big Bang!Our universe goes throug

14、h from small to big ,from close to thin ,and from hot to cold .During this period , the whole system expands(膨脹，發(fā)展)and the temperature descends(下降)。At last ,many kinds of gas and dust ,from which new stars are formed .The dense nucleus is the okdest part and has no gas left for new star.Our solar sy

15、stem is made up of the sun and the object s that orbit it .These include the eightplanetsand their moons ,as well as asteiods Comets and meteorsOur universe goes through fromCombine 1 . Combine with sth 因某物結(jié)合成一體2 . Combine A with B 將A 同B 組合3 . Combine A and B 使 A與 B合成一體Combine 1 . Combine with sth 因

16、In time 及時；終于，遲早Will you be home in time to watch the interesting TV program?你會及時趕到家看那個有趣的電視節(jié)目嗎？I believe you will succeed in time我相信你遲早會成功的。On time 準時，按時Becase of the heavy rain ,he didnt arrive there on time因為下大雨，他未能按時到那。In time 及時；終于，遲早At a time : 一次At the same time :同時At one time : 曾經(jīng)，一度；同時All t

17、he time : 一直，總是Once upon a time : 從前Kill time : 消磨時間人教版高一必修三unit4-reading一等獎優(yōu)秀課件Allow 1 . Allow sb to do sth : 允許某人做某事My boss doesnt allow me to use the telephone2 . Allow doing sth : 允許做某事We dont allow smoking in our house3 . Allow sb sth : 允許某人某事Their teacher allowed them 3 days for the assignment

18、Allow A cloud of dust a solid ball presence of water small plants grow on the water shellfish (貝類動物) or other fish appear plants begin to grow on dry land insects and amphibians (兩棲動物) appear (爬行動物) appear dinosaus appear Mammals (哺乳動物) appear A cloud of dust a solid ba人教版高一必修三unit4-reading一等獎優(yōu)秀課件人教

19、版高一必修三unit4-reading一等獎優(yōu)秀課件動詞原形詞義過去式過去分詞現(xiàn)在分詞lie說謊liedliedlyinglie躺；位于laylainlyinglay放置；產(chǎn)卵laidlaidlaying動詞原形詞義過去式過去分詞現(xiàn)在分詞lie說謊liedliedTurn1 . In ones turn : 輪到某人2 . It s ones turn to do sth ：輪到某人 It s my turn to clean the blackboard3 . In turn : 依次 They called out their names in turn4 . By turns : 輪流

20、We did the work by turnsTurn阻止某人干某事的幾種用法：1 . Prevent sb /sth (from) doing sth2 . stop sb /sth (from) doing sth3 . keep sb /sth from doing sth第三個句型from 不能省略？阻止某人干某事的幾種用法：Escape(1 ). From sp : 從逃離Gas is escaping from the pipe (2) . Doing sth :逃避做某事We were lucky to escape being punishedAs a result : 結(jié)果

21、As a result，there is often trouble in American familiesAs a result of : 因為，由于She was late as a result of the snow .Escape本課出現(xiàn)的名詞性從句1. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when dust settled into a solid globe.2. It was not clear whether the shape would last

22、or not. 3 .What is even more important is that as the earth cooled down ,water began to appear on its surface. 本課出現(xiàn)的名詞性從句 4. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmfuo gases and acids into the oceans and seas5 . Why the suddenly disappeared still remains a mystery .6