(
课件网) 沪教版七年级上册 Focusing on culture The Earth Unit 4 Learning Objectives 掌握文本内容，梳理塞罕坝是如何从沙漠变成绿洲的，了解塞罕坝改造过程中遇到的困难和最终的成果。 02 通过塞罕坝成功治理环境问题的案例，思考人类该如何保护地球。 03 掌握关键词汇，如generation, disappear, cut down, blow away, sandstorm等。 01 重点 Let’s talk What can we do to protect the Earth We should plant more trees and turn deserts into green land. We shouldn't litter, we need to sort our rubbish. We shouldn't put waste into rivers and seas. Let’s talk Can you imagine a desert can turn into a forest Look and say Do you know where Saihanba is It’s in Hebei province. There is a picture of Saihanba. Saihanba What do you know about it Look and say Saihanba Saihanba, from a tree to a million mu of forest, from desert to oasis(绿洲), is a miracle created by the Chinese people. Since 1961, after half a century of hard work, Saihanba has been built into a famous man-made forest area, attracting many tourists to come for sightseeing, and has become an important window to show China’s ecological civilization(生态文明). Read and predict The passage is mainly about how people turn Saihanba from a into a . desert forest Read and choose What is the TEXT TYPE of this passage？ A. Argumentation(议论文) B. Narration(记叙文) C. Exposition(说明文) C Read and match Para. 1 Para. 2 Para. 3 Read through the passage quickly and match each paragraph with its main idea. Actions and challenges Efforts and achievements History and problems Read and fill Scan the text and fill in the missing information. Pay attention to the time and events. scientists tried to find a it is again work hard in the 1800s in 1962 in the early 1960s For hundreds of years now emperors hunted there the first _____ _____ arrived slowly turned into _____ three emperors a desert green tree planters solution generations the world’s biggest man-made forest Read and answer How did Saihanba become a desert 2. Why was it difficult to turn the desert into a forest 3. How does the forest improve the environment in the Beijing area There were forest fires and wars, and people cut down many trees. Saihanba slowly turned into a desert. The cold and dry weather made their work very difficult and strong winds blew away many young trees. The forest helps provide the capital with clean water, and there are fewer sandstorms in the Beijing area now. Read and learn In 2007, the government listed Saihanba as one of the most important national nature reserves in China. In 2017, the Saihanba Afforestation Community received the Champions of the Earth award from the UN Environment Programme. Notes Watch and learn Watch a video clip about Saihanba and learn more about it. Discuss and share Q1: Why are forests important Forests are very important because they provide us with clean air and water. They help to clean the air by taking in carbon dioxide and giving out oxygen. Also, fores ... ...
