外教社大学英B语1U5.ppt

home;Video ;Objectives;main;Earth Day;Warm-up-Background Information;Question 1: Can you name the earth’s seven continents and five oceans?;Now, please point them out on a map!;This is the answer.;Warm-up- Discussion;;Listening;Listening; To pollute means to make things unfit or unclean for use. Man has been polluting the earth from the time he first made fire, washed his clothes in the river and threw his waste on the (1) . When land was used up or water became dirty, men moved on to another place. At first the problem was not so serious because there was (2) clean air, land and water, and there were fewer people. All the dirty things could be absorbed by;nature. But this is no longer (3) . The growth of population and the development of industry have changed that. Nowadays, pollution is beginning to threaten our (4) and life.;Discuss with your partner the following questions based on the information from the above passage you have just heard.;Speaking;飞行员，领航员;Comprehension;Comprehension;Comprehension;Comprehension;1 The earth means many things to the people who live on it. To a farmer, the earth is rich soil. To a road builder, the earth means mountains of hard rock. For a sailor, the earth is water as far as the eye can see. A pilot’s view of the earth may include part of an ocean, a mountain, and patches of farmland. An astronaut speeding through space sees the earth’s round shape and the outline of land and oceans. Each of these different views helps describe the earth but none really tells what the earth is.;Text A-2;Text A-3;Text A-4;Text A-5;Text A- Comprehension1;Text A- Comprehension2;Text A- Comprehension2;Text A- Comprehension2;Text A- Comprehension2;Text A- Comprehension3;Text A- Comprehension3;Text A- Comprehension4;Text A- Comprehension4;Text A- Comprehension4;Text A- Comprehension4;Text A- Vocabulary BuildingA1;Text A- Vocabulary BuildingA1;Text A- Vocabulary BuildingA2;Text A- Vocabulary Buildi