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课件网) It is reported that Earth's climate is being changed and human will face global ①_____ in the 21st century. What is global warming？ It refers to an average increase in the Earth's ② that, in turn, leads to climate change. Why is global warming seen as a danger, and how is it relevant to our lives？ The global average temperature has increased by 1°F over the last 100 years ③ of human activities. If the ④ continues, we are condemning life on Earth and should face terrible climate changes, serious diseases and bad ⑤ on some industries as well as the ⑥ sea levels. How can we stop these disasters from happening？ ⑦ all over the world have a responsibility to ⑧ the amount of carbon dioxide ⑨ by their countries. Everyone worldwide can play their part by making small ⑩ in the daily life. “课时跟踪检测”见“Unit 22 课时跟踪检测（一）” (单击进入电子文档) 谢 谢 观 看(
课件网) a number of 表示“许多，大量”，相当于many，修饰可数名词复数形式。作主语时，谓语动词用复数。number前可用large, great, small等修饰，以表示程度 the number of 表示“……的数量”，与复数名词连用作主语时，中心词是number，谓语动词要用单数 “课时跟踪检测”见“Unit 22 课时跟踪检测（二）” (单击进入电子文档) 谢 谢 观 看(
课件网) The last few years have ①_____ more environmental disasters and far worse ones may come. The influence of natural disasters ·Reduced rainfall has affected large areas ②_____ irrigation canals dry and some nations have already been in ③_____ over water. ·A volcanic eruption nearly ④_____ the small island of Montserrat. ·Indonesia has had a rough time， ⑤_____ several killer quakes and it is still ⑥_____ the Asian tsunami. The ⑦reasons for natural disasters ·One answer is ⑧_____. It is growing at the rate of 10,000 people an hour. ·⑨ _____ that, add global warming.This has mainly caused by huge amounts of carbon dioxide. ·Around ⑩ ____ the world's population lives in cities, causing more damages. represent 用来表示“代表某人/某个团体/政府等”“某种标志代表什么”“某物(书、雕塑等)表现的是什么”和“把某人/物描绘成什么” on behalf of 常用作状语，表示“代表/代替某人” stand for 往往用来表示“(字母、数字、符号等)代表/象征什么” “课时跟踪检测”见“Unit 22 课时跟踪检测（三）” (单击进入电子文档) 谢 谢 观 看(
课件网) 单词 词义 搭配 adopt 采纳；收养；正式通过，批准 adopt a child收养孩子adopt different approaches采取不同的办法 adapt (使)适应，(使)适合；改编；改写 adapt (sb./oneself) to sth. (使某人/自己) 适应某事 (be) adapted from由……改编 (be) adapted for为……改编 “课时跟踪检测”见“Unit 22 课时跟踪检测（四）” (单击进入电子文档) 谢 谢 观 看 consider v若虑；认为 considerate adj. consideration considerable adj. 周到的，体贴的 .体谅，考虑 相当大/多的 under consideration take ..into consideration 在芳虑中 把…考虑在内(
