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n each week. The rain is more evenly distributed throughout the year in a tropical rainforest (even though there is a little seasonality). In a temperate rainforest, there are wet and dry seasons. During the dry season, coastal fog supplies abundant moisture to the forest. Temperature The temperature in a rainforest never freezes and never gets very hot. The range of temperature in a tropical rainforest is usually between 75176。 安徽省滁州市第二中學高中英語 Unit22 Environmental Protection The Eleventh Period Check your progress 教案 北師大版選修 8 Teaching goals 教學目標 1. Target Language 目標語言 重點詞匯和短語 overpopulation, flood, earthquake, typhoon, poverty, carry on, take up, put aside, cut down, set up, e up with 2. Ability goals 能力目標 Learn why rainforests are important. 3. Learning ability goals 學能目標 By reading the article students will learn that rainforests play an invaluable role in sustaining life on Earth. Step I Revision Go over the passive. 1. Ask students to read the text in Ex6 on Page 94. 2. Ask students to state the reasons for using the passive voice in English. Step II A brief introduction of rainforests First make a brief introduction of rainforests. Then students are given seven minutes to read the article to get a main idea of the article. T: In this class we are going to learn something about rainforests. Before reading the text, look at the brief introduction. (Show the foll