2022年高一英语必修三Unit-Unit-说课稿.docx

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1、精选学习资料 - - - - - - - - - 高一英语必修三Unit 4Unit 4 Astronomy：the science of the star Reading说课稿课 题： Reading: How Life Began on the Earth I 教学 内容分析本单元的中心话题是“天文学 ”；本课是一篇表达性文体,根据时间次序主要表达了地球上生命的起源和进展过程；可以说科学学问含量较高,更能激发同学的学习爱好和奇怪心；Pre-reading 部分也提出了三个问题,主要是让同学区分宗教信仰、文化传统和科学思想之间的不同； 可以以讲故事的方式让同学彼此之间共享一些有关宇宙和地球起

2、源方面的传说或故事,这样既能激活他们的思维也能为阅读部分打下基础；Reading 部分描写了地球上生命的起源和进展过程,详细写了由于水的形成才使得地球上生命的产生成为可能；科学家认为,地球上的生命最初产生于水中；数万年后,陆地上才长出了绿色植物,随后显现了陆栖动物和水陆两栖动物；最初的动物靠孵化繁殖后代,再之后产生了哺乳动物,人类也随之产生了；文章最终叙述的现象发人深省：The earth may become too hot for the lives on it.II教学 重点和难点1 教学重点它关系到地球上生命的将来；1 本单元的生词、短语和句型结构；2 把握主语从句并把它和表语从句进行

3、区分；3 学会运用科学学问并能结合自己的想象力去解决现实中的问题；2 教学难点1 通过学习相应的科学学问培育同学的制造性思维才能；2 同学应能够懂得主语从句的用法和作用并能做到学以致用,举一反三；III. 教学步骤：名师归纳总结 - - - - - - -第 1 页,共 5 页精选学习资料 - - - - - - - - - Step 1 Revision Purpose :Let the students have a clear awareness of the text. Revise the new words and phrases by a dictation. Asking qu

4、estions: How many planets are there in solar system. What are they. Step 2. Fast reading Purpose: To get the list of the passage. To correctly understand some information given in the text. 1. Ask Ss to read the text quickly and try to get the main idea of the text. Suggested Answer: The main idea o

5、f the text is the title How life began on the earth. 2. Ask Ss to work in pairs and discuss the questions of Ex1 on P27. And then let them check the answers in pairs. Step 3. Intensive reading Purpose: to get the students to learn the details of the text. 名师归纳总结 - - - - - - -第 2 页,共 5 页精选学习资料 - - -

6、- - - - - - 1 Answer the questions: . When did the “Big Bang” happen. What form was the earth the “Big Bang” . What made up the earths atmosphere after the earth exploded. How did water come into being on the earth. . What was important to the development of fish. . What made possible the rise of ma

7、mmals on the earth. . Why are mammals different from all life forms in the past. 2Fill in the chart about the order of development of life. Suggested Answers: Small plants in water Shellfish and all sorts of fish Green plants on land Insectson land Amphibianson land and in water forests reptileson l

8、and dinosaurson land mammalson land human beings Step 3 Explanation Purpose:Help Ss analyze some difficult, long and complex sentences and guess the meanings of the new words. 名师归纳总结 - - - - - - -第 3 页,共 5 页精选学习资料 - - - - - - - - - Ask the studentsto underline the difficult sentences and analyze the

9、m and take notes. Pick out all the useful expressions and copy them. Step 4 Read aloud Ask Ss to read the passage aloud after the tape and let them pay more attention to the pronunciations of each new sentence. Step 5 Homework Preview the next period.and recite the last three paragragh. Unit 4 How L

10、ife Began On The Earth Difficult language points Main idea of each paragraph: 1 a widely accepted theory about the formation of the universe 2 the formation of the earth 名师归纳总结 - - - - - - -第 4 页,共 5 页精选学习资料 - - - - - - - - - 3 the important of water for life 4 the development of planet and animals on the earth 5 the arrival of human and their impact on the earth 名师归纳总结 - - - - - - -第 5 页,共 5 页