九年级英语全册 Unit 6 When was it invented grammar focus教案 （新版）人教新目标版

Unit 6 When was it invented Grammar Focus Class TypeGrammar ObjectivesTo learn and understand the “

Unit6Whenwasitinvented GrammarFocus ClassType Grammar Objectives 1. Tolearnandunderstandthe“passivevoiceinthepast tense”. 2. Tobetterunderstandandwellusethepassivevoiceinthe pasttenseinpractice. Keystructure 1.Whenwadthezipperinvented? —Itwasinventedin1893. 2.Whowasitinventedby? —Itwasinventedby… 3. Whatisthehotice-creamscoopusedfor? ● It’susedforservingreallycoldice-cream. Difficulties Howtowellusethestructureaboutpassivevoiceinthepast tenseinpractice. Period 1 Procedure Lead-in ShowSsthebasicformofpassivevoiceindifferenttenses. Step1 Examplesofactivevoicesentencesandpassivevoicesentences. Step2 Explanationabouttheexchangesofactivevoicesentencesand passivevoicesentences. Step3 Thefourstepsthattheexchangesofactivevoicesentencesand passivevoicesentencesshouldobey. Step4 Thesentencestructuresofpassivevoicesentenceswith examples. Step5 Theuseofpassivevoicewithspecificexamplessentences. Step6 AskSstoreadthesentenceswiththepassivevoiceparts underlined. Step7 ShowSssomeexamplesentencesindifferenttenses Step8 Moreexercises. 1. Changetheactivesentencesintopassivesentences. 2. Completesentenceswiththecorrectwords. 3. Choosethebestanswer. Step9 Activity4a. AskSstorewritethesentencesusingthepassivevoice. 1