Unit4SectionA课件人教版英语八年级上册

2025人教版英语八年级上册SectionA,Unit4AmazingPlantsandAnimalsU4,G8,AU4,G8,AU4,G8,AShe'sthetallestgirlinourclass.她是我们班最高的女孩。Thisisthemostinterestingbookinthelibrary.这是图书馆里最有趣的书。Heisthemosthard-workingstudentofall.他是所有学生中最勤奋的。Amongtheseflowers,theredoneisthemostbeatiful.在这些花中，红色的那朵最漂亮。TheYellowRiveristhesecondlongestriverinChina.黄河是中国第二长的河流。Thisisthethirdmostpopularsongthismonth.这是本月第三受欢迎的歌曲。Beijingisoneofthebiggestcitiesintheworld.北京是世界上最大的城市之一。Sheisoneofthemostexcellentstudentsinherschool.她是学校里最优秀的学生之一。ChinaislargerthananyothercountryinAsia.中国比亚洲任何其他国家都大。Herunsfasterthananyotherstudentinhisclass.她比班上任何其他学生跑得都快。Sheistallerthantheothergirlsinhergroup.她比她组里的其他女孩都高。Thsbookismoreinterestingthantheotherbooksontheshelf.这本书比书架上的其他书都有趣。U4,G8,AU4,G8,AU4,G8,A植物基本特征自养性细胞结构生长发育对不同环境的适应性分类孢子种子藻类苔藓蕨类裸子植物被子植物双子叶单子叶结构与功能根茎支撑植物固定植物吸收水分和无机盐运输养分叶光合作用蒸腾作用花繁殖器官果实保护和传播种子种子繁殖后代U4,G8,ABIGQuestionWhatmakesplantsandanimalsamazing?Lookandshare1.Iseetwobeesonyellowflowers.2.WhenIseethephoto,Ithinkaboutspring,thesmellofflowers,andthebeesflying.U4,G8,AvideowatchingU4,G8,Aold,sshort,smalllarge,big,heavy,lomg,beeautifultall,beautifulfast,beautifulU4,G8,A1.bluewhale2.cheetah3.moss4.redwoodtreeU4,G8,AmossBluewhaleRedwoodtreeCheetahDB,AFE,CU4,G8,AA:What'samazingaboutthebluewhale?B:It'sthelargestanimalintheworld.It;salsotheheaviest.A:Whatdoyouknowaboutcheetah?B:Thecheetahrunsthefastest.A:What'samazingabouttheredwood?B:It'soneofthetallestandlongest-livingtreesintheworld.A:Whatdoyouknowaboutmoss?B:Itcangrowindifferentkindsofenvironmentsandplaysakeyroleinkeepingsoilmoist(潮湿的)andpreventingerosion(腐蚀)_.U4,G8,AmakewaitplayfivetrynightboycoinoilblankblockblameclassclearcloseglueglowglovebreakbreathbridgecrabcrashcropgreengroupgramU4,G8,A背景与用途这种练习帮助学生理解英语中“重音不同，语义侧重点不同”的语音规则，提升口语表达的准确性和对语义的理解能力，同时也涉及到红杉林（redwoodforests）的地理知识----红杉林主要分布在加利福尼亚，是世界上著名的高大森林景观。U4,G8,AStreesingdifferentwordsIdon'tlikethisfilm.(Idon'tlikeit,butothersmightlikeit.)Idon'tlikethisfilm.(Correctingsomeonewhosaidyoulikedit.)Idon'tlikethisfilm.(Emphasizingnotlikingit.)Idon'tlikethisfilm.(Idon'tlikethisfilm,butImightlikeothers.)Idon'tlikethisfilm.(ItisthefilmthatIdon'tlike.)Inpairs,havethestudentsreadthesentencesandstressdifferentwords.Sheisagoodplayer.Ithinkhe'slying.Thisisagreatopportunity.Youshouldcomewithus.Iwillbringacaketomorrow.U4,G8,AsymbollargestoldestmostusefulTheShunanBambooSeaisabambooforestinSichunProvince.ItistheoldestandlargestbambooforestinChina.Itcoversover120squarekilometresandispopularwithtourists,wholiketotakephotosthere.Ithasalsobeenusedinmanyfilms.Therearelakesandviewingplatformstoenjoythespectacular(壮观的)scenery.Note1)oneof+the+（最高级形式）+复数名词----最......之一强调某事物属于某个类别中最突出或典型的代表之一，或描述具有最高级属性但并非唯一的事物，例如：BeijingOperaisoneofthemosttraditionalartformsinChina.京剧是中国最传统的艺术形式之一。She'soneofthemostexperiencedteachersinthisschool.她是这所学校里经验最丰富的教师之一。2)fastest-growing是个合成词，由“副词最高级+动词-ing形式”构成，用于描述事物的发展特征。类似的例子如“best-selling”（最畅销的）、“most-damaging”(破坏性最强的)U4,G8,A1.Ellaseesapaintingofbambooonthefoldingfan.2.BamboooftenappearsinChinesepaintingsbecauseitisasymbolofgoodnessinChineseculture.3.TheBambooSeaisinSichuanProvince.4.Peopleusebambooformanythings,suchasbuildinghousesandmakingtoolsandinstruments.5.Yes,sheis.Becauseshesays,"Oh,that'sinteresting."Shealsokeepsaskingquestionsaboutbamboo.U4,G8,AtheBambooSeagoodnesslargestoldestalmostonemetrehousestoolsinstrumentspandaspeopleU4,G8,AWiththefollowingemotionsElla:excitedly,closely,withasuddenrealization,insurprise,withexclamationChenJie:withasmile,nodding,proudly,carefully,U4,G8,Aitisbecauseitissuchawonderfulplant.Firstly,ithasasymbolicmeaningforpeoplehere.Itisconsideredasymbolofvirtue(道德),andassuchappearsinmanyChinesepoemsandpaintings.B:That'sinteresting.Itriedsomebambooshootsforlunch.Theyweresweetandcrunchy(松脆).A:Yes,theyare.Bamboohasmanyotheruses,otherthanfood.Itisalsousedtomakebooks,containers,andevenclothes.Itispopularinbuildingstoo,becauseitissostrong.B:Howlongdoesittakefroabambooplanttogrow?A:Bamboogrowsveryquickly.Somebamboocangrowalmostonemetreinoneday.B:Wow,that'samazing.feelfree(todosth)允许，用作邀请或让对方放心去做某事，意思是：请自便；请随便（做某事）。例如：Feelfreetoreachoutifyouneedanyhelp.如果需要帮助，随时联系我。Feelfreetoaskquestionsifyoudon'tunderstand.你要是不懂，可以随便提问。Pleasefeelfreetomakesuggestions.请随便提建议，不要拘束。Pleasefeelfreetosaywhatyoulike.请畅所欲言。U4,G8,A构成类型示例词构成方式单音节形容词/副词largest,heaviest,biggest,fastest词尾加"-est"多音节形容词/副词mostuseful,mostinteresting在词前加“most"最高级构成类型U4,G8,AthecutestthemostbeautifulthemostcolourfulthehighestthelargestheaviestNote1)among表示范围，相当于ofall，表示“在所有......中”。例如：Thatbookisthebestamongmodernnovels.在现代小说中，那是最好的一部。2)among放在最高级形容词之前，表示“......之一”。例如:Leedsisamong