人教版九年級英語下冊《We're trying to save the earth!》SectionB PPT下載(第1課時)，共27頁。
學習目標
通過口語交際活動，能夠組織聽力中的信息，運用used to、被動語態(tài)、一般現(xiàn)在時、現(xiàn)在完成時、一般過去時描述環(huán)境問題。
通過聽力活動，能夠應用抓取關鍵信息的策略，提升聽力能力。
通過演講比賽活動，能夠總結保護環(huán)境的方式，提升對人與自然關系的認識。
Let’s brainstorm.
Prepare for the speech competition: How can we save the earth?
Let’s study.
recycle [ˌriːˈsaɪkl]
v. 回收利用
We should recycle the used things.
re-是最常用的前綴之一。它可以加在名詞或動詞前面，構成新的名詞或動詞。
1) 表示“回”或“向后”的意思。
例如：return（回來）recall（回憶，召回）
2)re-表示“再”、“重新”、“重復”的意思。
rethink（再思考） reuse（再運用）
restart（重新開始） recycle（再利用）
Homework
寫一篇80詞以內(nèi)的短文關于 “How to save the earth” 或者 “How to protect the environment”.
閱讀相關文章，掌握更多知識。
查找關于used to、情態(tài)動詞、現(xiàn)在進行時、現(xiàn)在完成時、被動語態(tài)相關知識并總結。
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