人教版高一Unit 4PPT

Is there life on the moon?
Warming up
1. In our solar system eight planets circle around the sun. What are they? Can you name them with your partners? Then match the names with the planets? Look at the picture and work in pairs. Then check your answer with other pairs.
WhileWhile-reading
Read the text carefully and think about what you have read and discuss these questions in pairs.
1. Why was the earth different from the other planets? Because water remained on the earth. 2. Why did the plants grow before the animals came? Because plants provided oxygen for animals to breathe. 3. Why is it wrong to show films with dinosaurs and people together? Because dinosaurs died out long before human beings developed on the earth.
2. Dinosaurs appeared. 1. Insects and amphibians appeared. 4. Small plants grew on 3. The earth became a the water. solid ball. 6. Plants began to grow 5. Reptiles appeared. on dry land. 7. The earth was a cloud of dust. 8. Water appeared on the 9. Shellfish and other earth. fish appeared. 10. The universe began 11. Clever animals with with a "Big Bang". hands and feet appeared. 12. Mammals appeared. 10 7 3 8 4 9 6 1 5 2 12 11
WhileWhile-reading
Work in pairs. Put the order of development of life into a timeline first according to your common sense, and then according to the reading passage.
2. Read the text quickly to check if the idea in the text is different from those you have already known about.
WhileWhile-reading
Read the text quickly and write down the main idea for each paragraph.
Paragraph 1:A widely accepted theory about the formation of the universe Paragraph 2:The formation of the earth Paragraph 3: The importance of water Main for life Body Paragraph 4:The development of plants and animals on the earth Paragraph 5:The arrival of humans and their impact on the earth
Retell the text, and then write a summary (about 100 words) of the text in your own words.
Unit 4 Astronomy: the science of the stars
Reading
Lead-in
What do you know about astronomy?
What are in the pictures?
Neil Armstrong (1930 – ), USA. He landed on the moon in July 1969.
PostPost-reading
1. Which words, phrases, structures, or sentences are difficult for you to understand? Underline them, guess using context and then ask your teacher. 2. Read aloud after the tape, paying attention to pronunciation, intonation and rhythm.
4. There used to be nine planets in the solar system. Recently scientists have decided that one of them can no longer be considered a planet. Do you know the name of that planet? Do you know why they removed it? The name is Pluto. Scientists now think it is too small to be called a planet. 5. What problem is caused by human beings? Human beings cause global warming.
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune
2. What interests you in astronomy? Do you know any questions that astronomers are interested in? Discuss in groups of four and then each group leader reports the ideas to the whole class.
PrePre-reading
1. Read the title and look at the pictures. Think about these questions, share with your partner and then with the class: 1) Байду номын сангаасhat do you know about the origin of life on earth? 2) Do you know how life began on earth is explained in different religions and cultures?