人教新课标高一必修三英语课件：Unit 4 Astronomy：the science of the starPeriod 3.ppt

1、 Period 3 Language Study and Grammar 1. Do people take good care of the earth? 2. What do people do to the earth? Can you give an example? 3. Critical reading: “Thus they (people) have, in their turn, become the most important animals on the planet.” Do you agree? Para. 5: The _of humans and their _

2、on the earth. Main idea： arrival impact ( ) 1 Insects and amphibians appeared. ( ) 2 Dinosaurs appeared. ( ) 3 The earth became a solid ball. ( ) 4 Small plants grew on the water. ( ) 5 Reptiles appeared. ( ) 6 Plants began to grow on dry land. ( ) 7 The earth was a cloud of dust. ( ) 8 Water appear

3、ed on the earth. ( ) 9 Shellfish and other fish appeared. ( ) 10 The universe began with a “Big Bang”. ( ) 11 Clever animals with hands and feet appeared. ( ) 12 Mammals appeared. 12 1 1 2 2 3 3 5 5 4 4 8 8 6 6 1010 9 9 7 7 11 Put them into a timeline. What does the author want to tell us by the las

4、t sentence？ “So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved ” 1) How is the whole passage organized? 2) Which bold faced words serve the title more directly and efficiently(有效地）有效地）? Group Discussion Unlike: Prep 音乐和其他艺术形式迥然

5、不同。 Music is quite unlike any other art form. 这么迟很不像他平时的作风。 It is very unlike him to be so late. 2) Adj 他们完全不像。 They are totally unlike. In ones turn/in turn By turns Take turns 每个学生轮流起来发言。每个学生轮流起来发言。 Every student in his turn stands up and speaks. 他们轮流来照顾她。他们轮流来照顾她。 They take turns to take care of

6、her. Proof reading: 1. For several billions years after the “Big Bang”, the earth was still just a cloud of dust. 2. They were on time to produce carbon, nitrogen, water and other gases, which were to make the earths atmosphere. 3. It was not immediately obvious whether water was to be fundamental t

7、o the development of life. 4. People put too much carbon dioxide into the atmosphere, which prevents heat from escape into space. 5. They _ （增加）（增加）and filled the oceans of oxygen, which encouraged the later development of early shellfish and all sort of fish. How many subject clauses can you find i

8、n the reading passage? 1. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. 2. The earth became so violent that it was not clear whether the shape would last or not. 3. What is even more important is that as the earth cooled dow

9、n, water began to appear on its surface. 4. It was not immediately obvious that water was to be fundamental to the development of life. 5. What many scientist believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. 6. Why they s

10、uddenly disappeared still remains a mystery. 7. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. Translation 1. 随后它会变成什么没人知道，直到3845亿年前，这团尘埃才慢 慢地形成一个固体的球状物。 What it was to become was uncertain until between 4.5 and 3.8 billion

11、 years ago when the dust settled into a solid globe. 2. 地球变得激烈动荡，不知道这个固体形状是否会继续下去。 The earth became so violent that it was not clear whether the shape would last or not. 3. 更为重要的是，地球冷却了下来，地球表面就开始出现了水。 What is even more important is that as the earth cooled down, water began to appear on its surface.

12、 4. 水会对生命的发展起关键作用，这一点在当时并不明显。 It was not immediately obvious that water was to be fundamental to the development of life. 5. 很多科学家相信，由于地球上长期有水存在，它使得地球得 以把有害气体和酸性物质溶解在海洋里。 What many scientist believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into th

13、e oceans and seas. 6.它们为什么会灭绝至今还是一个谜。 Why they suddenly disappeared still remains a mystery. 7. 在未来的数百万年中，生命能否再地球上延续取决于这个问 题能否得到解决。 So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. 翻译下列的主语从句翻译下列的主语从句 1.随后它会变成什么随后它会变成什么was unc

14、ertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. 2. The earth became so violent that it was not clear这个固体形这个固体形 状是否会继续下去状是否会继续下去. 3.更为重要的是更为重要的是is that as the earth cooled down, water began to appear on its surface. 4. It was not immediately obvious水会对生命的发

15、展起关键作水会对生命的发展起关键作 用用. 5.很多科学家相信很多科学家相信is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. 6.它们为什么会灭绝它们为什么会灭绝still remains a mystery. 7.在未来的数百万年中，生命能否在地球上延续在未来的数百万年中，生命能否在地球上延续will depend on whether this problem can be solved. Ex 34 P 27 Ex 14 P 28 Assignment Finish English Weekly No. 8 Recite at least 3 sentences in the text