高三英語Global warming教案
[解釋]one/all/every/each/part… of which(whom)引導的定語從句，表示“他（它）們中的一個/所有/每/部分……”
[典例]
1) i have three good friends, all of whom have emigrated to u.s.a.我有三個好朋友，他們都移民美國了。
2) here are many kitties, two of which are yellow.這有許多小貓，其中兩只是黃色的。
[練習] 漢譯英
我有三個叔叔,其中最年輕的叔叔三年前去了澳洲.
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key: i have three uncles, the youngest one of whom went to australia three years ago.
二、課文要點
1課文詞匯等填空（旨在復習本課文中的單詞拼寫和主要詞語等）
根據課文內容完成下面語法填空，注意單詞拼寫和詞語用法：
when 1 (compare) with most natural changes, that the temperature of the earth rose about one degree fahrenheit during the 20th century is quite shocking. and it’s human activity 2 has caused this 3 (全球的) warming rather 4 a random but natural 5 （現象）. dr janice foster explains that we add huge 6 of extra carbon dioxide to the atmosphere by burning fossil fuels. from the second 7 （圖表）and the discovery of charles keeling, all scientists believe that the burning of more and more fossil fuels has resulted 8 the increase in carbon dioxide. greenhouse gases continue to build up. some think that the trend would be a 9 (災難). on the other hand, george hambley 10 (聲明) that more carbon dioxide would encourage a greater range of animals and bring us a better life.
答案：1.compared 2.that 3.global 4.rather 5.phenomenon
6.quantities 7.graph 8.in 9.catastrophe 10.states
2課文大意概括 （旨在訓練用30個單詞概括大意的能力）
閱讀課文，試著用30來個單詞概括課文大意或翻譯下面短文。
通過文章我們得知，地球的溫度正在上升。它也給我們展示不同的想法和根據數據圖表分析全球氣候變暖的原因，地球的溫度和增加可能造成的影響。