Unit4SectionA（3a3d）课件人教版八年级英语下册

SectionA（3a-3d）Unit4TheWondersofNatureBytheendofthislesson,wewillbeableto：1.masterriver-relatedvocabularyandsentencepatternstodiscussrivers'lengthandimportance；

2.understandtheculturalimportanceofriversliketheYellowRiverandtheNile,fosteringculturalrespect；

3.analyzeandcompareinformationaboutrivers,developinglogicalandcriticalthinking.

LearningObjectivesLookandsayWhatisit?TheHukouWaterfallontheYellowRiver.LookandsayWhatisit?TheNile.CanyoutalkaboutthedifferencesbetweentheNileandtheYellowRiver?3aReadtheconversationandunderlinethethreeriversmentioned.Yaming:Welcomeback,Ella!Howwasyourtrip?Ella:Itwasgreat!WesawtheHukouWaterfallontheYellowRiver.IsthatthelongestriverinChina?Yaming:No,theYangtzeRiveristhelongestriverinChina.Ittravelsthefarthestandisabout6,300kilometreslong.TheYellowRiveris5,464kilometreslongandisthesecondlongest.Bytheway,doyouknow

whyit'scalledtheYellowRiver?Ella:Becauseit'syellow?Yaming:Right.Somepartsoftherivercarrybrownandyellowearth.Ella:That'sinteresting!Ilikelearningaboutrivers.MyfavouriteistheNile.Didyouknowit'sthelongestriverintheworld?Yaming:Yes,it's6,671kilometreslong.It'sveryimportantinEgypt’shistory.Ella:That'sright.BoththeNileandtheYellowRiverhelpedancientcivilizationstodevelop.Andthey’restillveryimportanttoday.Yaming:Yes.InChina,weevencalltheYellowRiverour"motherriver"!Ella:Weshouldprotectthematallcosts.3bWhatdoYamingandEllaknowabouttheserivers?Readtheconversationagainandcompletethetable.RiverCountryLengthImportanceYellowRiver______________________kmhelpedinthedevelopmentofancient____________NileRiver______________________kmChinaEgypt5,4646,671civilizationsYaming:Welcomeback,Ella!Howwasyourtrip?Ella:Itwasgreat!WesawtheHukouWaterfallontheYellowRiver.IsthatthelongestriverinChina?Yaming:No,theYangtzeRiveristhelongestriverinChina.Ittravelsthefarthestandisabout6,300kilometreslong.TheYellowRiveris5,464kilometreslongandisthesecondlongest.Bytheway,doyouknow

whyit'scalledtheYellowRiver?Ella:Becauseit'syellow?Yaming:Right.Somepartsoftherivercarrybrownandyellowearth.Ella:That'sinteresting!Ilikelearningaboutrivers.MyfavouriteistheNile.Didyouknowit'sthelongestriverintheworld?Yaming:Yes,it's6,671kilometreslong.It'sveryimportantinEgypt’shistory.Ella:That'sright.BoththeNileandtheYellowRiverhelpedancientcivilizationstodevelop.Andthey’restillveryimportanttoday.Yaming:Yes.InChina,weevencalltheYellowRiverour"motherriver"!Ella:Weshouldprotectthematallcosts.3cListentotheconversation.Thenrole-playit.Youcanusetheinformationinthetable.3dImaginethatyouareYamingorElla.ContinuetheconversationwithapartneraboutothergeographicalfeaturesinChina.Ella:CouldyoutellmemoreaboutChina,Yaming?Yaming:Sure!Whatwouldyouliketoknow?Ella:What'sthebiggestdesertinChina?Yaming:It'stheTaklimakanDesert.Ella:Doyouknow...?CheckyourpresentationPresentyourpostertotheclass.languagecorrectform(形式正确)accuratemeaning(意义精确)properuse(使用恰当)posterdesigncreativity(创意)performanceconfidence(自信)OK

Good

ExcellentEighteenbaysoftheJiuquYellowRiver.九曲黄河十八湾。1Becauseit’syellow?本句是由because引导的原因状语从句，用于说明前面事情（黄河名字由来）的原因。句子结构为“because+主语+谓语+宾语”。回答why引导的特殊疑问句，或在句中、句首说明原因。常见例句：Becauseitrainsalot,thegroundisverywet.

因为雨下得很大，所以地面很湿。2

BoththeNileandtheYellowRiverhelpedancientcivilizationstodevelop.“both...and...”连接两个并列主语时，谓语动词用复数；“help+宾语+宾语补足语(todo)”结构，to可省略。常见例句：BothTomandLilylikereadingbooks.Theyoftenhelpeachothertosolveproblems.

汤姆和莉莉都喜欢读书。他们经常互相帮助解决问题。3

Didyouknowit’sthelongestriverintheworld?本句为复合句，“Didyouknow...?”是主句，是一般过去时的一般疑问句结构；“it’sthelongestriverintheworld”是宾语从句，作know的宾语，要用陈述语序。常见例句：Didyouhearhewillcometoourschool?

你听说他将来我们学校了吗？一、用所给单词的适当形式填空1.TheYellowRiverisoneofthe________(long)riversinChina.2.Weshouldlearn_______(much)abouttheNileRiver.3.He______(travel)tomanyplacesandknowsalotaboutrivers.4.BoththeNileandtheYellowRiverhelpedancient___________(civilization)todevelop.5.___________(protect)riversisourduty.longestmoretravelscivilizationsProtecting二、句型转换BoththeNileandtheYellowRiverareimportant.（改为否定句）2.Welikelearningaboutrivers.(对画线部分提问)NeithertheNilenortheYellowRiverisimportant.Whatdoyoulikedoing?三、翻译句子1.顺便问一下，你知道黄河为什么叫这个名字吗？2.长江是中国最长的河流，大约6300千米长。3.我们应该不惜任何代价保护这些河流。

Bytheway,doyouknowwhyit’scalledtheYellowRiver?TheYangtzeRiveristhelongestriverinChina.Itisabout6,300kilometreslong.Weshouldprotecttheseriversatallcosts.Writeashort