高中英语 Unit4 Global warming Period 3优秀教案 新人教版选修6VIP免费

Period3Grammar—theUseof“It”(2)\s\up7()教学内容分析Thisteachingperiodmainlydealswiththegrammar：theuseof“it”．“It”hasmanyusagesintheEnglishlanguage.“It”canbeusedasapronounandtheformofsubjectandobject，andbeusedtoexpressemphasis.FromUnit3weknowthat“it”canbeusedasapronounandtheformofsubjectandobject.Inthisunitwewilllearnthat“it”canbeusedtoexpressemphasis.Thiskindofsentenceiscalledemphasizedsentences.Itsmainformis“Itis/was...that/who...”，whichisaveryusefulsentencepattern.三维目标设计Knowledgeandskills1．Togetthestudentstoknowthestructureoftheemphasizedsentences.2．Toletthestudentslearntheusagesoftheemphasizedsentences.3．Toenablethestudentstousetheemphasizedsentencescorrectlyandproperly.Processandmethods1．Toaskthestudentstoreadthereadingpassageagain，pickouttheemphasizedsentencesfromthereadingpassageandtranslatethemintoChinese.2．Toaskthestudentstodiscoverthestructureandusagesoftheemphasizedsentencesbycomparingalotofexamplesentences.3．ToaskthestudentstodotheexercisesinDiscoveringusefulstructuresonPage29tomastertheemphasizedsentences.4．Toaskthestudentstosummarizetheusagesoftheemphasizedsentences.5．ToaskthestudentstodotheexercisesinUsingStructuresonPage64andsomeotheradditionalexercisesforconsolidation.Emotion，attitudeandvalue1．Togetthestudentstobecomeinterestedingrammarlearning.2．Todevelopthestudents'abilityofcomparingandsummarizing.教学重、难点1．Togetthestudentstomasterthestructureandusagesoftheemphasizedsentences.2．Toenablethestudentstolearnhowtousetheemphasizedsentences.\s\up7()Step1Revision1．Checkthehomeworkexercises.2．Dictatesomenewwordsandexpressions.Step2WarmingupAskthestudentstocomparethetwosentencesbelow.Thesecondsentenceisfromthereadingpassage.TranslatethemintoChineseandthendiscussanydifferenceinmeaningandform.Askthestudentstoexplainwhy“it”isusedinthesecondsentence.Humanactivityhascausedthisglobalwarming.It_ishumanactivity_thathascausedthisglobalwarming.Tellthestudentstherearetwomoresentencesinthetextinwhich“it”isusedforemphasis.Findthemandthenwritethemdown.________________________________________________________________________________________________________________________________________________Suggestedanswers：1．It_wasascientistcalledCharlesKeeling，whomadeaccuratemeasurementsoftheamountofcarbondioxideintheatmospherefrom1957to1997.2．...it_istheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.Step3GrammarlearningAskthestudentstostudythefollowingsentencesandtrytosummarizethestructureoftheemphasizedsentences.Step4SummingupTrytohelpthestudentsdrawthefollowingconclusions.1．Themainstructureoftheemphasizedsentencesis“Itis/was...that/who...”．2．Theemphasizedsentencescanbeusedtoemphasizethesubject，objectandadverbial(includingadverbialoftimeandadverbialofplace)．3．Whenwewanttoemphasizethesubject，objectandadverbial，weonlyneedtoputthesepartsbetween“itis/was”and“that/who”，therestpartshouldn'tbechanged.4．Whentheemphasizedpartisapersonwecanuseboththestructure“Itis/was...that...”andthestructure“Itis/was...who...”．Whentheemphasizedpartisnotapersonwecanonlyusethestructure“Itis/was...that...”．Step5GrammarpracticeAskstudentstodothefollowingexercises：1．Changethefollowingsentencesintoemphasizedsentences.(Toemphasizetheunderlinedparts.)(1)Peterlentusthemoney.(2)Theywantmoney.(3)Allthishappe...