BOOK4 Unit2 第二课时导学案.docx

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1、高一年级英语unit 4第二课时导学案Class: Name : 设计人：Stepl. Read the passage and match the main idea with each paragraph.Paral A. How the earth formedPara2 B. How the plants and animals on the earth developedPara3C. The importance of water for life on the earth.Para4D. The arrival of humans and their impact on the

2、earthPara5 E. Its widely accepted that the universe began with a Big Bang”Step 2.Choose the best answerNobody knows exactly how the earth began because.A. Big Bang is dangerousB. It happened so long agoC. people are too afraid to see it D. It happened in all directionsWhat does the word “they” refbr

3、 to in the sentences “It exploded loudly with fire and rock .they were in time.A. Planets B. stars C. Gases D. Fire and rockWhy was life able to develop on the earth but not on other planets?A. The earth had a solid shape.B. The earth did not have harmful gases in its atmosphere.C. The water stayed

4、on the earth but not on other planets.D. The earth was not too hot and not too coldWhich is the right order of the development of life?A. small clever animals shellfish 一dinosaurs一 mammalsB. shellfish 一 dinosaurs一 small clever animals一 mammalsC. shellfish 一dinosaurs一 mammalssmall clever animalsD. di

5、nosaurs shellfish一 mammals一small clever animalsFrom the last paragraph we can infer that the auth is.A. confident B.sad. C. concerned D. angry.Step 4. Put the events into a timeline1. A. Insects and amphibians appeared.2. B. Dinosaurs appeared.3. . C. The earth became a solid ball.4. D. Small plants

6、 grew on the water.5. E. Reptiles appeared.6. F. Plants began to grow on dry land.7. G. The earth was a cloud of dust.8. H. Water appeared on the earth.9.I. Shellfish and other fish appeared.10 .J. The universe began with a “Big Bang”.11 .K.Clever animals with hands and feet appeared12 .L.Mammals ap

7、pearedStep 6.反思，小结，记忆Step 5.课文浓缩The earth was just a cloud of after the Big Bang”. The earthloudly with fire and rock. They were to produce many things, which were to make the earths atmosphere. As the earth cooled down, water began to appear on its surface. It allowed the earth to dissolve gases. T

8、hen life began to developSmall plants and filled the oceans and seas withoxygen. This encouraged the of early shellfish and fish.Land animals such as insects, reptiles and dinosaurs appeared after green plants appeared. Small clever animals all over the earth.They are putting carbon dioxide into the atmosphere, which heat from the earth into space. Whether life willcontinue on the earth from millions of years to come will whether this problem can be solved