【正文】
分配 第一環(huán)節(jié) 復(fù)習(xí)回顧主閱讀篇章 Step1. Reading prehension. 1. Read the text paragraph by paragraph to get a view of the three elements to the destruction of the environment. 2. Read the partThe greenhouse effect, put the sentences into a correct order. 3. Read the part Cutting down forests, and then finish the following chart. 4. Read the partBad habits, and then plete the chart. 5. Read the last paragraph, and then 6. Guide students to finish related exercise in 25 minutes. 1. Train Ss’ ability of reading in a limited time.