人教版新課標(biāo)高一必修3 Unit 4 Astronomy The Science of the Star--教案6

New Senior English For China Student’s Book 3   Unit 4 Astronomy: the science of the star  (Reading) learning aims: l Learn how to use different reading skills for different reading purposes, ( inferring; skimming; detailed reading, and so on.) l Read the passage and learn about the development of the earth. Difficult and important points: l Develop our reading ability. l Learn the following words and phrases:  theory; violent; unlike; harmful; mutiply; exist;  in time; lay eggs; give birth to; in one’s turn; prevent…from. Reading: How life began on the earth I. Skimming(略讀) Reading strategy(策略): Go through the passage quickly to get the main idea of each paragraph. Don’t worry about the details and new words. Skim the passage and match the main idea with each paragraph. Para. 1 The formation(形成) of the earth Para.2  The importance of water for life Para.3  A widely accepted theory about the formation of the universe Para.4  The arrival of humans and their effects on the earth Para.5  The development of plants and animals on the earth II .Detailed reading(細(xì)讀) Reading strategy: Read the passage carefully paragraph by paragragh and try to get more information. Then answer the questions. Para 1&2: the formation of the universe and the earth 1.About how the universe began, which theory is widely accepted? 2.What form（形狀） was the earth after the “Big Bang”? 3.What made up the earth’s atmosphere after the earth exploded? 4. In the sentence “It exploded loudly with fire and rock. They were in time to produce carbon, nitrogen…” here “they” refers to__________.  “In time” means_______.  Para 3 the importance of water for life ? What made the earth different from the other planets is that ________ remained on the earth. ? The significance(意義) of the continued presence of water is that it allowed________________________. Para 4 The development of life   7.___________ 8.dinosaurs 9＿＿＿.____ 1.small plants in the water 3.____________ 4. insects on land 5._____________ 6._________ 2._________   2._________   Para 5  the arrival of humans and their effects on the earth 1.What problems have been caused by humans to the earth? 2.What does the last sentence mean? III. From the text, we can infer（推斷）except that___. A. The passage tells us the scientific idea of how life began on the earth. B. It is wrong to show films with dinosaurs and people together. C. Finally, humans rule the world, but they are not taking care of the earth very well. D. Life began on land and then in water. IV. Can you find their English? 1.  隨后他會變成什么一直無法確定,直到約45億至38億年,這團(tuán)塵埃最終變成一個固體圓球. 2. 地球變得如此激烈動蕩, 以致于不知道這個形狀是否會繼續(xù)存在下去. 3. 更重要的事，隨著地球的冷卻，地球的表面就開始出現(xiàn)了水。 4. 很多科學(xué)家相信,水的繼續(xù)存在使地球得以把有害氣體和酸的物質(zhì)溶解到海洋里.  V. Talking bar（談?wù)劙桑?How to protect the earth and make it a better place to live on? VI.  Homework. ?  Learn and recite the four sentences above ?  Retell the passage about how life began on the earth. ?  Learn the useful words and expressions by heart.

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