冀教版九年级英语上册 （The Study of Living Things）Look into Science!课件教学

TheStudyofLivingThingsLesson28

LookintoScience

Unit5

课文呈现知识讲解…………Lesson28TheStudyofLiving❶Things词汇听写课堂导入课文1结对活动课堂小结课后作业…

同学们，上一课学习的单词你们都掌握了吗？现在大家来检验一下，点击下面的音频开始听写吧！Doyoulikenature,why?InMexico，thebutterfliesalwaysreturntothesamesmallpieceofforest，whichisonly20kilometreswide❸.Here,asmanyas❹230millionbutterfliesspendthewinter.Theycancoversometreesalmost❺completely.Thebutterfliesthatreturntothesoutharethegreat­greatgrandchildrenofthebutterfliesthatleftforthenorth.Whentheybegintotravelnorthinspring，thefemaleslayeggs.Theylayeggsononlyoneplant：milkweed.Butterfliesarebeautiful.Whatdoyouknowaboutthem?ButinMexico，peoplecutdown❻thetreesthatthebutterfliesneedtorestonbecausetheywantmorelandforfarming.IntheUnitedStatesandCanada，farmersusechemicalsthatkillmilkweed.Thisworries❼Dr.Tayloralot.Nowthingsareimproving.Mexicohasbeguntoprotectpartsofitsforests.TheUnitedStatesandCanadahaveencouragedfarmerstouselesschemicals.Scientistsstilldon’tunderstandhowthebutterfliesknowwhentoflysouth.Iftheyareevenafewdayslate，theywillfreeze.Andhowdoallthegreat­greatgrandchildrenfindthesameforestinMexicoeveryyear?Thisis

both

puzzlingand❽interestingformanyscientists.Therearemanymysteriesyettobediscoveredbythoseinterestedinscience.Wouldyouliketostudybiology?living/'lɪvɪŋ/adj.活着的

eg：Allthelivingpeopleweretakentosafety.所有活着的人都被带到了安全的地方。讲解来自《点拨》知识点1用法例句alive既可指人，也可指物，可作表语或后置定语。Thefishisstillalive.这条鱼还活着。living既可用于指人，也可用于指物。在句中可作表语或定语。Heisdead，buthisparentsarestillliving.他死了，但他的父母仍然健在。Thesearealllivingfish.这些都是活鱼。live

主要用于指鸟类或其他动物。Wesawalivesnake.我们看见了一条活蛇。讲解来自《点拨》考向【易错点】辨析alive，living与live

drawone’sattention

引起某人的注意

拓展payattentionto

注意讲解来自《点拨》知识点2eg：It’saspecialdaytodrawpeople'sattentiontotheenvironment.它是个引起人们注意环境的特殊日子。eg：Payattentiontoyourhandwriting.注意你的书写。典例昨天，他不同寻常的讲话吸引了我们的注意。

Hisunusualspeech________________________yesterday.讲解来自《点拨》drewourattention

20kilometreswide

20千米宽

考向讲解来自《点拨》知识点3表示长、宽、高等用“基数词＋单位词(metre，foot，inch等)＋形容词(long，wide，high等)”或者用“基数词＋单位词＋in＋名词(length，width，height等)”。eg：Thewallis20metreslongand2metreshigh.＝Thewallis20metresinlengthand2metresinheight.这堵墙20米长，2米高。典例这座建筑30米高。Thebuildingis________________________.【点拨】“基数词＋单位词(metre，foot，inch等)＋

形容词(long，wide，high等)”可用来表示长、宽、高。30metreshigh

讲解来自《点拨》

asmanyas意为“多达……，和……一样多”，修饰可数名词复数。

讲解来自《点拨》知识点4eg：Thereareasmanyastenthousandbirdsintheforest.这个森林里有多达一万只的鸟。as…as…和……一样。中间用形容词或副词的原级。否定形式中，前面的as也可用so,即notso/as…as意为“不如……”。eg：IthinkEnglishisasimportantasChinese.我认为英语和汉语一样重要。Youaren’tas/sotallasyourbrother.你没有你弟弟高。

考向讲解来自《点拨》典例Steveisn’tas________asKelly.Heoftenmakesmistakesinhiswriting.(浙江丽水)A．careless

B．tidyC．carefulD．difficult【点拨】根据句意可知，Steve不如Kelly仔细，他经常在书写方面犯错误。as…as中间应该用形容词或副词的原

级。故选C。C

讲解来自《点拨》

almost/'ɔːlməʊst/adv.几乎，差不多考向讲解来自《点拨》知识点5eg：Ialmostmissedmytrain.我差点错过了火车。辨析almost与nearly

almost和nearly这两个词都表示“几乎”，“差不多”的意思，在不少场合可以互换使用，但有以下区别：相同点不同点

nearly意思相近，肯定句中可以换用。nearly可以和not连用，notnearly是“远不”的意思，但almost不和not单独连用。Themoneywillnotbenearlyenoughformyjourney.这些钱远不够我旅行用。

almostalmost能和never，no，none，nothing，nobody等词连用，这种情况下不能用nearly。讲解来自《点拨》典例用almost或nearly的适当形式填空。1．Therewas________nosnowthatwinter.2．Weare________________there.3．Thespeakersaid________nothingthatwasworthlisteningto.4．________________allthestudentslefthereafewminutesago.almost讲解来自《点拨》nearly/almostalmost

Almost/Nearly

cutdown砍倒，缩减

讲解来自《点拨》知识点6eg：Theycutdownthebigtree.他们把这棵大树砍倒了。You’dbettercutthearticledowntoabout500words.你最好把这篇文章压缩到五百字左右。与cut有关的短语有：cutin

打断(谈话)，插嘴eg：Don’tcutinwhenothersaretalking.当别人正在讲话时不要插嘴。Iwasjustcomingtothatpointwhenyoucutin.

我刚要谈那一点，你就打断我了。cutoff

切断，断绝 eg：Thefloodcutthevillagersofffromtherestoftheworld.洪水切断了村民与外界的联系。考向讲解来自《点拨》Hecutoffabranchfromthetree.他从树上砍下了一根树枝。cutout

删除，停止做(或使用、食用)eg：I’vebeenadvisedtocutsugaroutofmydiet.

有人劝我饮食要忌糖。Icutoutoneparagraphinthisarticle.我删除了这篇文章的一个段落。讲解来自《点拨》典例政府告知我们不要砍倒这些树。Thegovernmenthastoldus______________________________thetrees.【点拨】cutdown砍倒，tellsb.nottodosth.告诉某人不要做某事。

讲解来自《点拨》tocutdownnot

worry/'wʌri/n.烦恼，忧虑v.担心，担忧

考向一讲解来自《点拨》知识点7eg：Don’tworry.Iknowhowitturnedout.不要担心。我知道事情怎样发展。worry作及物动词，构成结构：worrysb.

使某人担心。eg：Ididn’twanttoworrymyfriend.

我不想使我的朋友担心。考向二worry作不及物动词，常构成：Don’tworry.“不要担心。”；worryaboutsth./sb.“担心某事/某人”。eg：Don’tworry.He’llbeallright.别担心。他会平安无事的。Thechildhasnothingtoworryabout.这个孩子没有什么可担心的。讲解来自《点拨》

考向三worriedadj.担心的beworriedaboutsb./sth.担心某人/某事eg：Don’tbeworriedaboutme.Icanlookaftermyself.不用担心我。我能照顾自己。讲解来自《点拨》

both…and………和……都

考向讲解来自《点拨》知识点8both...and,neither...nor与either...or

的区别。both...and...表示“……和……都”，是指两者兼而有之，连接两个并列成分作主语时，谓语动词要用复数形式。neither...nor表示“既不……也不”，指两者都不，连接两个并列成分作主语时，谓语动词跟最邻近的主语保持人称和数上的一致。either...or

表示“或者……或者”或“不是……就是”的意思，是指两者中的一个，它连接两个并列成分作主语时，谓语动词跟最邻近的主语保持人称和数上的一致。讲解来自《点拨》典例1.Youcantake________thispen________thatpen,butyoucan’ttakeboth.2．________Lily________Tomwillcomethisafternoon,becausetheyareverybusy.3．ShehaslearnedEnglishandChineseforyears，soshecanspeak________English________Chineseverywell.either讲解来自《点拨》Neitherbothor

norand

carry/'kæri/v.携带，搬运讲解来自《点拨》知识点9eg：Letmecarrytheboxforyou.让我替你搬这个箱子吧。Shecarriedherbabyinherarms.她怀里抱着她的宝宝。用图片表示bring，take与fetch的区别为：讲解来自《点拨》拓展IaskedLilytofetchmeanEnglishbook，butshebroughtmeaChinesebook，soIaskedhertotakeittotheteacher’soffice.我让莉莉去给我取一本英语书，她却给我拿来了一本语文书，于是我让她把它拿到老师的办公室。魔法记忆讲解来自《点拨》1.Readthelessonandcompletethetable.Fantasticfactsaboutbutterflies·Thebutterfliesalways________tothesamesmallpieceofforestand________thewinterthere.·Thebutterfliesthatreturntothesoutharethegreat­greatgrandchildrenofthebutterfliesthatleftforthenorth.·Thefemales________eggsononlyoneplant：milkweed.

return

spend

lay

Let'sDoIt!Thingsthatscientistscan’tunderstand·Howdothebutterfliesknowwhentoflysouth？·Howdothegreat­greatgrandchildrenofthebutterflies________thesameforest？findThingsthatDr.Taylorworriesabout·InMexico，peoplecutdownthetreesthatthebutterfliesneedto______on.·IntheU．S.andCanada，farmersusechemicalsthat______milkweed.restkill

2.Jointhesentencestomakeattributiveclauses.Example：Wedidsomeexperimentsyesterday.Theexperimentswerefantastic.Theexperimentsthatwedidyesterdaywerefantastic.Let'sDoIt!1．Iaskedhimtomailtheletter.Iwrotethelettertomycousin.___________________________________________________2．YesterdayImetaboy.Theboyisanewmemberinourartclub._________________________________________________3．Marywascarrying❾abag.Thebagcostheralotofmoney._________________________________________________4．Footballisateamsport.Footballispopularallovertheworld._________________________________________________IaskedhimtomailtheletterthatIwrotetomycousin.YesterdayImetaboywhoisanewmemberinourartclub.

Marywascarryingabagwhichcostheralotofmoney.Footballwhichispopularallovertheworldisateamsport.

3.Workingroupsofthreetoplayagame.Tasktips：Eachgroupshouldpreparesomepiecesofpaperanddividethemintothreecolumns.StudentAwritesaperson’snameinthefirstcolumn，foldsthepaperandpassesittoStudentB．StudentBwritesastatementbeginningwith“who”，foldsthepaperandpassesittoStudentC．StudentCmustfinishthesentenceandreaditoutloud.Example：Mr.Brown

whoisabiologist

willgiveusatalkLet'sDoIt!一、根据句意及汉语提示完成单词1．Doyoulike________(生物学)atschool?2．Look!Therearemany___________(蝴蝶)amongtheflowers.3．Thisisa________(极好的)film.4．I___________(完全地)forgotaboutit.5．Manypeople________(迁移)toCanadainthe1800s.来自《点拨训练》biologybutterfliesfantastic

completelymigrated来自《点拨训练》二、单项选择6．Ourteacheroftenencourageshim________hard.

A．workB．workingC．toworkD．works7．Sinceenvironmentistooimportanttoallofus,wehumanbeingshadbetter________fewertrees.A．turneddownB．cutdownC．putdownD．cutupCB来自《点拨训练》8．Look!Mydogis________onthegroundinthesun.A．lieB．layC．laidD．lying9．(呼和浩特)Thephoto________takenbymybrotherlastw