global warming教案3

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1、Period3　Grammar—theUseof“It”(2)教学内容分析　　　Thisteachingperiodmainlydealswiththegrammar：theuseof“it”．“It”hasmanyusagesintheEnglishlanguage.“It”canbeusedasapronounandtheformofsubjectandobject，andbeusedtoexpressemphasis.FromUnit3weknowthat“it”canbeusedasapronounandtheformofsubjectandobject.Inthisun

2、itwewilllearnthat“it”canbeusedtoexpressemphasis.Thiskindofsentenceiscalledemphasizedsentences.Itsmainformis“Itis/was...that/who...”，whichisaveryusefulsentencepattern.三维目标设计　　　Knowledgeandskills1．Togetthestudentstoknowthestructureoftheemphasizedsentences.2．Toletthestudentslearntheusagesoftheem

3、phasizedsentences.3．Toenablethestudentstousetheemphasizedsentencescorrectlyandproperly.Processandmethods1．Toaskthestudentstoreadthereadingpassageagain，pickouttheemphasizedsentencesfromthereadingpassageandtranslatethemintoChinese.2．Toaskthestudentstodiscoverthestructureandusagesoftheemphasized

4、sentencesbycomparingalotofexamplesentences.3．ToaskthestudentstodotheexercisesinDiscoveringusefulstructuresonPage29tomastertheemphasizedsentences.4．Toaskthestudentstosummarizetheusagesoftheemphasizedsentences.5．ToaskthestudentstodotheexercisesinUsingStructuresonPage64andsomeotheradditionalexer

5、cisesforconsolidation.Emotion，attitudeandvalue1．Togetthestudentstobecomeinterestedingrammarlearning.2．Todevelopthestudents'abilityofcomparingandsummarizing.教学重、难点　　　1．Togetthestudentstomasterthestructureandusagesoftheemphasizedsentences.2．Toenablethestudentstolearnhowtousetheemphasizedsentenc

6、es.Step1　Revision1．Checkthehomeworkexercises.2．Dictatesomenewwordsandexpressions.Step2　WarmingupAskthestudentstocomparethetwosentencesbelow.Thesecondsentenceisfromthereadingpassage.TranslatethemintoChineseandthendiscussanydifferenceinmeaningandform.Askthestudentstoexplainwhy“it”isusedinthes

7、econdsentence.Humanactivityhascausedthisglobalwarming.It_ishumanactivity_thathascausedthisglobalwarming.Tellthestudentstherearetwomoresentencesinthetextinwhich“it”isusedforemphasis.Findthemandthenwritethemdown.________________________________