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1、Unit20Unit20 Lesson4Lesson4 学习目标By the end of the class, the students will be able to: Internalizing and externalizing the knowledge Enhancing scientific knowledge and interest in space exploration Inspiring and motivating students学习过程 课堂活动 （一）预习交流QuickQuick responseresponse toto thethe eventsevents
2、 inin thethe timetime order.order. 1957_1957_ _ 1961_1961_ _ 1969_1969_ 1970_1970_ _ 1990_1990_ 2003_2003_（二）合作探究ImportantImportant ElementsElements inin NarrativeNarrative WritingWriting_1.1. WordWord Bank:Bank: CollectionCollection ofof thethe relevantrelevant vocabularyvocabulary inin thethe unun
3、it,it, whichwhich maymay helphelp youyou withwith youryour writingwritingWords:Words:Phrases:Phrases:（三）分层提高ChooseChoose thethe usefuluseful vocabularyvocabulary andand sentencessentences forfor youryour outline.outline.SpaceSpace ExplorationExplorationIntroduction:_Introduction:_WriteWrite aboutabout originsorigins：WriteWrite aboutabout thethe present:present: WriteWrite aboutabout thethe futurefuture : :_ WriteWrite aboutabout thethe conclusion:conclusion: _ _._. 5.5. SelfSelf evaluationevaluation ofof thethe writing.writing. _ _ . . （四）总结归纳（五）巩固反馈Finish the exercise
