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1、2022年高一英語(yǔ)《Unit4 Astronomy the science of the stars：Warming up and reading》教案 教學(xué)目標(biāo) 1. Get the Ss to think about astronomy . 2. Get the Ss to learn about the origin of life on earth . 3. Ask the Ss to know how the universe developed and how life began on the earth . 教學(xué)重難點(diǎn)：Le

2、arn how the universe developed and how life began on the earth . 預(yù)習(xí)案： The origin of life on earth is a question that interests everyone. Each religion and culture has its own ideas about how life began on earth. What do you know ? In China, there are two legends about these puzzles. Do you know th

3、e names? In the western culture, who creates everything in the world? 新授案 1.Warming up :look at the picture 0n the page 25 and answer the question . .What are the names of the eight planets that circle our sun? 2.Reading Task one: Fill in the blanks after listening 1).According to a w

4、idely accepted theory, the universe began with a ____________that threw matter in all directions. 2)It was not immediately obvious that ___________was to be fundamental to the development of ________. 3)They are putting too much CO2 into the atmosphere, which prevent _______ from escaping from the

5、 earth. What’s the writing style of the text? A. Narrative 記敘文 B. Explanation 說(shuō)明文 C. Essay 散文 Task two: Fast reading I. Read the passage quickly and match the main idea with each paragraph. Para. 1 The formation (形成) of the earth. Para. 2 The importance of water fo

6、r life. Para. 3 A widely accepted theory about the formation of the universe. Para. 4 The arrival of humans and their impact on the earth. Para. 5 The development of plants and animals on the earth Task three :Detailed reading This text can mainly d

7、ivided into two stages Stage 1 : (para__________) The development of the earth Stage 2 : (para__________)The development of life Stage 1: (1) After the Big Bang, what was the earth like? (2) What happened next? (3) What did the water vapour and gases form? (4) What appeared as the eart

8、h cooled down? (5)Why is water so important for the beginning of life? Stage2 1.What life developed after water appeared? 2.What life developed in water next? 3.What about the life on land? 4. What life developed next on land? 5.What life developed after forests appeared? 6.Wha

9、t life developed after dinosaurs? 7. What life developed after mammals? Discuss: 1.Who are the small clever animals with hands and feet? 2. Are they taking care of the earth well? Why 課堂練習(xí)： .Finish the Exercise 2（P27） on the book according to the questions above. Homework : Summary

10、 After the “big bang”, the earth was still just a cloud of _______,it _______loudly with fire and rock, which were _____ to produce the_________, water vapour and other gases. Then ________ began to appeared on the earth. ____________ in water are considered to be the earliest lives on the earth

11、. The O2 they 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 totally different animal,______, possible, and finally _____ spread all over the world.