我的第四单元---马德坚

1、Unit 4Unit 4 Astronomy: Astronomy: the science of the starsthe science of the stars What subjects are learnt in high school? Chinese Mathematic English PEPhysic Chemistry Biology, etcwhich subject belongs to science? Mathematic Physic Chemistry BiologyWhat do you know about astronomy?Lead-in is the

2、scientific study of the universe and the heaven bodies (such as the sun, the moon, and stars), gas, and dust within it. What are in the pictures?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? Loo

3、k at the picture and work in pairs. Then check your answer with other pairs. Warming upMercury水星水星Venus金星金星Earth地球地球Mars火星火星Jupiter木星木星Saturn土星土星Uranus天王星天王星Neptune海王星海王星Thinking 1) What do you know about the origin of life on earth?2) Do you know how life began on earth is explained in different re

4、ligions and cultures? Pangu separates the sky from the earth 中国神话传说中有盘古开天地的说法。中国神话传说中有盘古开天地的说法。巨人盘古用一把利斧劈开混沌巨人盘古用一把利斧劈开混沌,将天地分开。将天地分开。死后死后,他的气息化成风和云他的气息化成风和云,声音变成轰轰的声音变成轰轰的雷声雷声,左眼化为太阳左眼化为太阳,右眼化为月亮右眼化为月亮,手足与四手足与四肢变成大地的四极与五方的名山肢变成大地的四极与五方的名山,血液化成血液化成江河江河,筋脉铺成道路筋脉铺成道路,肌肉形成田地肌肉形成田地,须发成为须发成为星星星星,牙齿和骨骼化为金

5、属、珍珠、玉石牙齿和骨骼化为金属、珍珠、玉石,汗汗水成为滋润万物生长的甘霖和雨露。水成为滋润万物生长的甘霖和雨露。Other legends about the beginning of universe was create by GodRead the text quickly and write down the main idea for each paragraph.Para. 1 The formation(形成形成) of the earth.Para. 2 The importance of water for life.Para. 3 A widely accepted th

6、eory 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.II. Read the text and fill in the blanks in the following form.TimeWhat happenedBig Bang_ began to form and combine to create stars and oth

7、er bodies.AtomsBetween 4.5 and 3.8 billion years agoDust settled into a solid and _ globe.The earth exploded to produce its_ .The continued _ of water allowed the earth to dissolve harmful gases and _ into the oceans and seas.violentatmospherepresenceacidsMany millions of years laterThe first small

8、plants on the surface of the water produced_ .Early _ and all sorts of fish appeared.Green plants began to grow on land. Insects and_ appeared.oxygenshellfishamphibianslWork in pairs. Put the order of developmentof life into a timeline first according to your common sense, and then according to the

9、reading passage. 10 73 8 4 9 6 1 5 2 12 111. Insects and amphibians appeared.3. The earth became a solid ball.5. Reptiles appeared.7. The earth was a cloud of dust.9. Shellfish and other fish appeared.11. Clever animals with hands and feet appeared.2. Dinosaurs appeared.4. Small plants grew on the w

10、ater.6. Plants began to grow on dry land.8. Water appeared on the earth.10. The universe began with a Big Bang.12. Mammals appeared.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 re

11、mained 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.4. There used to be nine plane

12、ts 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(冥王星冥王星). 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.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 t