Unit22导学案(4)

Unit22 Environmental Protection 导学案(4)Lesson 3 Natural DisastersTips: Only one earth, share and care.Learning aims:A: Learn and recite the new words in Lesson 3B:Practise reading strategies to complete texts with sentence gaps.C: Learn the language points from Introduction—Passage B .Learning important and difficult point:Use the strategies to complete texts with sentence gaps.StepⅠ 背记下列单词。（A 级）1.滑坡 n.________ 2.海啸 n.________ 3.台风 n.____________4.巨大的 adj.________5.规模 n.________ 6.多变的 adj.________7.雷暴 n.__________ 8.降雨量 n.________ 9.灌溉 n.__________10.武装 vt._________11.艰难的 adj.________12.地震 n.__________13.在近海岸的 adj.___________ 14.巨大的灾难 n.____________15.分离 n._________ StepⅡ Before reading--lead in.(B 级)How many natural disasters do you know? __________________________________________________________StepⅢ Fast reading (C 级)Reading strategy 1 : Read to get the general idea.__________________Reading strategy 2 :Read for topics of each paragraph.( ) Causes of natural disasters ( ) Examples to show disasters become common ( ) Experts predict that natural disasters will get worse ( ) Overpopulation in cities makes more people in danger ofnatural disasters.( ) Examples of volcanic eruption and earthquake showing their threat to our world.Reading strategy 3 :Read for clues about the missing sentence. (time, place, pron. linking), choose the best answers.1. Terrible flooding in Asia… ( )2. Reduced rainfall; drier ( )3. Why…? ( )4. This has been caused by CO2... ( ) 5. …the worst eruption… ( )StepⅣ Language points from Introduction—Passage B. (B 级)★ Introduction1. 大自然开始袭击我们。______________________________1【短语积累】turn on (1)____________(2)______________译：① The dog turned on me and ...