unit 19 modern agriculture 第三课时教案

Unit 19 dern agriulture 第三时教案Unit19dernagriulture 第三时教案ITeahingais:learntuse“it”frEphasisSiilardialguepresentatinithnerdsandexpressinsusedithinIITeahingaids:slide,pituresStepIRevisinStepIIrdstudFinishtheexerisesinStudentb,page47StepIIIPratieLetSsfinishtheexerises“vabular,1-3”inpage108,rbStepIVGraar1giveSssesentenesttranslateinthineseandfindutdiffereneandsaenessangthesesentenesItisnthisarablelandthatthefarersprduefdfrthehleppulatinfhinaItasfrtheearl1990sthatsientistsstartedtdevelpnetehniquestinreaseagriulturalprdutinithutharingtheenvirnentItastheh/thatleanedthelassresterdaItasinthestreetthatIetherfatherItasthegatseesthathehadseeninthedarness2teahSstfindutthephrasefrthesenteneabve-Itis+被强调部分+that/hTranslatethefllingsentenesintEnglish:写这本书的人就是玛丽。Itisarhrtethisb2 这个就是长满了美丽的鲜花的花园。Itisgardenthatanbeautifulflersgrin3 她就是擅长唱歌的女孩。Itisagirlhisgdatsinging4 那就是他叔叔移居纽约的季节。ItasfrthisreasnthathisunlevedutfNer错的人是我。ItisIharng4nte:a 在强调句型中，若被强调部分指人，可以用关系代词h或 that；若被强调的是状语，只能用 that，不能用 hen或 here。b 注意与“Itis/asthat+lause”主语从句的区别。强调句型与 it作形式主语，that 从句作真正主语十分相似，但主语从句中 Itis/as后通常用名词或形容词作表语。强调句型中 Itis/as后是对主语、宾语或状语的强调成分。letSsfindutsesenteneithitinthetextdernAgriultureItisnthisarablelandthatthefarersprduefdfrthehleppulatinfhinaItasfrtheearl1990sthatsientistsstartedtdevelpnetehniquestinreaseagriulturalprdutinithutharingtheenvirnentItasdevelpedusingatehniquenasG3exerisesletSsfinishtheexerisesinStudentsb,page47-48