人教版高中英語必修三第四單元

1、.Module III Unit 4Astronomy玉樹二高2014級高一十四班 .I. Warming upI. Warming upW h a t s t h e m e a n i n g o f t h e w o r d “Astronomy”? 2. Do you know the following terms? star（ ） planet（ ） the sun / moon / earth（ ） solar system（ ）3. How many planets are in the solar system? .I. Warming upI. Warming upW h

2、 a t s t h e m e a n i n g o f t h e w o r d “Astronomy”? the science of stars;2. Do you know the following terms? star（恒星） planet（ 行星 ） the sun / moon / earth（ 太陽、月亮、地球 ） solar system（ 太陽系 ）3. How many planets are there in the solar system? 8.Scientists now think Pluto is too small to be called a p

3、lanet.The names of eight planetsThe names of eight planets1) 1) 水星水星 MercuryMercury2) 2) 金星金星 VenusVenus3) 3) 地球地球 EarthEarth4) 4) 火星火星 MarsMars5) 5) 木星木星 JupiterJupiter6) 6) 土星土星 SaturnSaturn7) 7) 天王星天王星 UranusUranus8) 8) 海王星海王星 NeptuneNeptune.海王星海王星 Neptune水星水星Mercury 金星金星Venus 地球地球Earth 火星火星Mars

4、木星木星Jupiter 土星土星Saturn天王星天王星Uranus .In this unit, well learn something In this unit, well learn something more scientificmore scientific1.Whats the title of the text? how life began on the earth2. From the title, we can predict that the text may tell us the origin of life on the earth. Do you know s

5、ome stories about it?.Pangu separates the sky from the earthPangu separates the sky from the earth. Nvwa made humansNvwa made humans.Read the passage quickly and answer the Read the passage quickly and answer the questionsquestions1. When did the “Big Bang” happen?2. What form was the earth after th

6、e “Big Bang”?3. What made up the earths atmosphere？4. How did water come into being on the earth?5. Whats the significance of the presence of water on the earth?6.What was important to the development of fish?7. What made possible the rise of mammals on the earth? 8. Why are mammals different from a

7、ll life forms in the past?. Phrases and Useful ExpressionsPhrases and Useful Expressionscircle around circle around 繞繞 轉(zhuǎn)轉(zhuǎn)according to according to 根據(jù)根據(jù) a widely accepted theory a widely accepted theory 熟知的理論熟知的理論in all directions in all directions 向著四面八方向著四面八方 in time in time 及時(shí)；終于及時(shí)；終于cool down coo

8、l down 冷卻冷卻be fundamental to be fundamental to 對對 關(guān)鍵關(guān)鍵a chain action a chain action 連鎖反應(yīng)連鎖反應(yīng) make it possible forto do make it possible forto do 使使 可能可能 give birth to give birth to 生育生育11. prevent from 11. prevent from 阻止阻止 做做 12. millions of years to come 12. millions of years to come 未來的幾百萬年未來的幾百萬

9、年.1. When did the “Big Bang” happen?1. When did the “Big Bang” happen? It happened several billion years agoIt happened several billion years ago. .Scanning Read the passage quickly and answer Read the passage quickly and answer the questionsthe questions.2. What form was the earth after the “Big 2.

10、 What form was the earth after the “Big Bang”?Bang”? The earth was still just a cloud of dustThe earth was still just a cloud of dust. .3. What made up the earths atmosphere after 3. What made up the earths atmosphere after the earth exploded?the earth exploded? Carbon, nitrogen, water vapour and ot

11、her Carbon, nitrogen, water vapour and other gasesgases. .4. How did water come into being on the 4. How did water come into being on the earth?earth? As the earth cooled downAs the earth cooled down after it exploded, after it exploded, water came into beingwater came into being. .5. Whats the sign

12、ificance of the 5. Whats the significance of the presence of water on the earth?presence of water on the earth? It allowed the earth to dissolve harmful It allowed the earth to dissolve harmful gases and acids into the oceans and gases and acids into the oceans and seas.seas.6. What was important to

13、 the development of 6. What was important to the development of fish?fish? oxygen. 7. What made possible the rise of mammals on 7. What made possible the rise of mammals on the earth?the earth? The disappearance of dinosaurs made the possible the rise of mammals on the earth.8. Why are mammals diffe

14、rent from all life 8. Why are mammals different from all life forms in the past?forms in the past? They gave birth to young baby animals and produced milk to feed them.Close readingI. Read the passage carefully I. Read the passage carefully and match the main idea and match the main idea with each p

15、aragraph. with each paragraph. .Para. 1 Para. 1 A.A.The formation (The formation (形成形成) of the earth. ) of the earth. Para. 2 Para. 2 B.B.The importance of water for life.The importance of water for life. Para. 3 Para. 3 C.C.A widely accepted theory about A widely accepted theory about the formation

16、 of the universe.the formation of the universe.Para. 4 Para. 4 D.D.The arrival of humans and The arrival of humans and their impact on the earth. their impact on the earth. Para. 5 Para. 5 E.E.The development of plants The development of plants and animals on the earth. and animals on the earth. Tru

17、e (T) or False (F).True (T) or False (F).1. The earth appeared before the Big Bang happened.2. The original atmosphere consisted of nitrogen and oxygen. 3. The main difference between the earth and other planets is that there is water on the earth. 4. Life began in water and then on land.FFTT. Summa

18、ry SummaryWhat do we learn today?. Summary SummaryHow life began on the earth.Put the order of development of Put the order of development of life into a timeline.Use the life into a timeline.Use the reading passage to help you.reading passage to help you.1.Insects and amphibians appeared.( 10)2.Dinosaurs appeared.( )3.The earth became a solid ball.( )4.Small plants grew on the water.(8 )5.Reptiles appeared.( )6.Plants began to grow on dry land.( ).7.The earth w