英语：Module5《A-Lesson-in-a-Lab》-Period-1-Introduction--Grammar-课件(外研版必修1).ppt

外研版必修1 “Module 5 A Lesson in a Lab Period 1 Introduction Grammar 1” 陕西省勉县一中 谢燕 Albert Einstein Thomas Edison Darwin Match physics chemistry biology Alfred Nobel Darwin Li Zhengdao Thomas Edison Albert Einstein Newton Madam Curie 1. (a) Water exists as a solid, a liquid and a gas. (b) Water exists as a solid and a liquid only. 2. (a) When you heat a metal, it expands. (b) When you heat a metal, it contracts. 3. (a) Steel is a mixture of iron and other substances. (b) Steel is a mixture of iron and oxygen. 4. (a) Two-thirds of the earth’s surface is water. (b) 50% of the earth’s surface is water. 5. (a) The distance of the sun from the earth is 25，500 kms. (b) The distance of the sun from the earth is 150，500，500 kms. 6. (a) The earth is 4.6 million years old. (b) The earth is 4.6 billion years old. 7. (a) The earth is twice as large as the moon. (b) The earth is forty-nine times larger than the moon. Put these words in pairs or groups: air contract earth gas liquid oxygen moon solid sun expand air--oxygen contract---expand earth—moon—sun gas—liquid—solid Which are man-made ? Which are natural? Which are both ? electricity iron metal steel air glass electricity iron air some metal steel glass some metal Electricity and some metals (alloys for example) can be man-made and occur naturally The earth is larger than the moon. The earth is forty-nine times larger than the moon. The earth is forty-nine times as large as the moon. The earth is forty-nine times the size of the moon. 倍数( half, twice , three times…） + as + adj / adv 原级 + as adj / adv 比较级 + than the size( age ,height, length, weight ,width, depth …)+ of Questions: 1.What’s wrong with this sentence? I went there I we