新課標(biāo)人教版高中英語(yǔ)必修3Unit4AstronomyWarmingupreading課件學(xué)習(xí)教案

1、會(huì)計(jì)學(xué)1第一頁(yè)，共32頁(yè)。1. Whats the meaning of the word “Astronomy”?I. Warming upthe science of stars;the scientific study of stars and planets.2. What words will you think of when we talk about this topic? star, planet, the sun / moon / earth, solar system 恒星恒星 行星行星 太陽(yáng)太陽(yáng)(tiyng) 月球月球 地球地球 太陽(yáng)太陽(yáng)(tiyng)系系 3. How

2、 many planets are in the solar system? 第1頁(yè)/共32頁(yè)第二頁(yè)，共32頁(yè)。Scientists now think Pluto is too small to be called a planet.第2頁(yè)/共32頁(yè)第三頁(yè)，共32頁(yè)。The Solar SystemThe Solar System1111第3頁(yè)/共32頁(yè)第四頁(yè)，共32頁(yè)。5. The names of eight planets.1) 水星水星(shuxng)2) 金星金星3) 地球地球4) 火星火星5) 木星木星6) 土星土星7) 天王星天王星8) 海王星海王星商業(yè)商業(yè)(shngy)之神之

3、神”和和“旅行之神旅行之神”愛(ài)與美之神愛(ài)與美之神該亞該亞戰(zhàn)神戰(zhàn)神天神天神(tinshn)農(nóng)業(yè)之神農(nóng)業(yè)之神宇宙之神宇宙之神海神海神第4頁(yè)/共32頁(yè)第五頁(yè)，共32頁(yè)。Mercury Venus Earth Mars Jupiter Uranus Saturn Neptune6. Put them in correct order on P25.Do you know their origin?第5頁(yè)/共32頁(yè)第六頁(yè)，共32頁(yè)。II. Pre-reading1. Have you ever asked your mother, “Mom, where do I come from”?2. Nearl

4、y everybody has this or that puzzles:How do human beings come into being?How does the earth come into being?3. In China, there are two legends about these puzzles. Do you know the names?第6頁(yè)/共32頁(yè)第七頁(yè)，共32頁(yè)。盤(pán)古盤(pán)古(Png)開(kāi)天辟地開(kāi)天辟地 女?huà)z補(bǔ)女?huà)z補(bǔ)天造人天造人 4. In the western culture, who creates everything in the world?第7頁(yè)

5、/共32頁(yè)第八頁(yè)，共32頁(yè)。III. Fast-reading1. Do you believe in such stories? Are they based on science?2. In this unit, well learn something more scientific.3. Whats the title of the text?4. From the title, we can predict that the text may tell us the origin of life on the earth.第8頁(yè)/共32頁(yè)第九頁(yè)，共32頁(yè)。Paragraph 1:Pa

6、ragraph 2:Paragraph 3:Paragraph 4:Paragraph 5:D. A widely accepted theory about the formation of the universeC. The formation of the earth A. The importance of water for lifeB. The development of plants and animals on the earthE.The arrival of humans and their impact on the earthRead quickly and mat

7、ch the main idea of each paragraph第9頁(yè)/共32頁(yè)第十頁(yè)，共32頁(yè)。Stage 1 : The development of the earthStage 2 : The development of life(para 13)(para 45)第10頁(yè)/共32頁(yè)第十一頁(yè)，共32頁(yè)。Stage 1: The development of the earth(1) After the Big Bang, what was the earth like? a cloud of dust a solid globe 第11頁(yè)/共32頁(yè)第十二頁(yè)，共32頁(yè)。explod

8、ed with fire and rock produced water vapour and gases(2) What happened next?第12頁(yè)/共32頁(yè)第十三頁(yè)，共32頁(yè)。(3) What did the water vapour and gases form?the earths atmosphere第13頁(yè)/共32頁(yè)第十四頁(yè)，共32頁(yè)。 Water appeared(4) What appeared as the earth cooled down?water is important for the beginning of life on the earth. 第14

9、頁(yè)/共32頁(yè)第十五頁(yè)，共32頁(yè)。第15頁(yè)/共32頁(yè)第十六頁(yè)，共32頁(yè)。Stage2 The development of lifeStage2 The development of life第16頁(yè)/共32頁(yè)第十七頁(yè)，共32頁(yè)。 small plants appears in water 1.What life developed after water appeared?第17頁(yè)/共32頁(yè)第十八頁(yè)，共32頁(yè)。Shellfish and all sorts of fish 2.What life developed in water next?第18頁(yè)/共32頁(yè)第十九頁(yè)，共32頁(yè)。 green

10、 plants began to grow on land insects appeared3.What about the life on land?第19頁(yè)/共32頁(yè)第二十頁(yè)，共32頁(yè)。amphibians on land and in the waterforests4. What life developed next on land?第20頁(yè)/共32頁(yè)第二十一頁(yè)，共32頁(yè)。 reptiles appeared dinosaur developed 5.What life developed after forests appeared?第21頁(yè)/共32頁(yè)第二十二頁(yè)，共32頁(yè)。mamm

11、als on land6.What life developed after dinosaurs?第22頁(yè)/共32頁(yè)第二十三頁(yè)，共32頁(yè)。 small clever animals7. What life developed after mammals?第23頁(yè)/共32頁(yè)第二十四頁(yè)，共32頁(yè)。第24頁(yè)/共32頁(yè)第二十五頁(yè)，共32頁(yè)。 Because they are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space.Th

12、e earth may become too hot to live on .第25頁(yè)/共32頁(yè)第二十六頁(yè)，共32頁(yè)。 The earth is becoming hotter and hotter!第26頁(yè)/共32頁(yè)第二十七頁(yè)，共32頁(yè)。23456789101 small plants in watershellfish and all sorts of fish insects reptilesamphibiansmammalsdinosaurs humansplantsanimalsGreen plants on landforests第27頁(yè)/共32頁(yè)第二十八頁(yè)，共32頁(yè)。831091

13、151741262Ex.2 on P27第28頁(yè)/共32頁(yè)第二十九頁(yè)，共32頁(yè)。dustexplodedin timecarbonwater第29頁(yè)/共32頁(yè)第三十頁(yè)，共32頁(yè)。 _ in water are considered to be the earliest lives on the earth. The O2they supplied encouraged the lives of_. Slowly green plants grew on land, which were followed by _like insects & _. When the plants grew into_, _ appeared. Then _ developed but disappeared later, which made the rise of a to