冀教版九年級(jí)英語(yǔ)上冊(cè) （The Study of Living Things）Look into Science!課件教學(xué)

TheStudyofLivingThingsLesson28

LookintoScience

Unit5

課文呈現(xiàn)知識(shí)講解…………Lesson28TheStudyofLiving?Things詞匯聽(tīng)寫(xiě)課堂導(dǎo)入課文1結(jié)對(duì)活動(dòng)課堂小結(jié)課后作業(yè)…

同學(xué)們，上一課學(xué)習(xí)的單詞你們都掌握了嗎？現(xiàn)在大家來(lái)檢驗(yàn)一下，點(diǎn)擊下面的音頻開(kāi)始聽(tīng)寫(xiě)吧！Doyoulikenature,why?InMexico，thebutterfliesalwaysreturntothesamesmallpieceofforest，whichisonly20kilometreswide?.Here,asmanyas?230millionbutterfliesspendthewinter.Theycancoversometreesalmost?completely.Thebutterfliesthatreturntothesoutharethegreat-greatgrandchildrenofthebutterfliesthatleftforthenorth.Whentheybegintotravelnorthinspring，thefemaleslayeggs.Theylayeggsononlyoneplant：milkweed.Butterfliesarebeautiful.Whatdoyouknowaboutthem?ButinMexico，peoplecutdown?thetreesthatthebutterfliesneedtorestonbecausetheywantmorelandforfarming.IntheUnitedStatesandCanada，farmersusechemicalsthatkillmilkweed.Thisworries?Dr.Tayloralot.Nowthingsareimproving.Mexicohasbeguntoprotectpartsofitsforests.TheUnitedStatesandCanadahaveencouragedfarmerstouselesschemicals.Scientistsstilldon’tunderstandhowthebutterfliesknowwhentoflysouth.Iftheyareevenafewdayslate，theywillfreeze.Andhowdoallthegreat-greatgrandchildrenfindthesameforestinMexicoeveryyear?Thisis

both

puzzlingand?interestingformanyscientists.Therearemanymysteriesyettobediscoveredbythoseinterestedinscience.Wouldyouliketostudybiology?living/'l?v??/adj.活著的

eg：Allthelivingpeopleweretakentosafety.所有活著的人都被帶到了安全的地方。講解來(lái)自《點(diǎn)撥》知識(shí)點(diǎn)1用法例句alive既可指人，也可指物，可作表語(yǔ)或后置定語(yǔ)。Thefishisstillalive.這條魚(yú)還活著。living既可用于指人，也可用于指物。在句中可作表語(yǔ)或定語(yǔ)。Heisdead，buthisparentsarestillliving.他死了，但他的父母仍然健在。Thesearealllivingfish.這些都是活魚(yú)。live

主要用于指鳥(niǎo)類或其他動(dòng)物。Wesawalivesnake.我們看見(jiàn)了一條活蛇。講解來(lái)自《點(diǎn)撥》考向【易錯(cuò)點(diǎn)】辨析alive，living與live

drawone’sattention

引起某人的注意

拓展payattentionto

注意講解來(lái)自《點(diǎn)撥》知識(shí)點(diǎn)2eg：It’saspecialdaytodrawpeople'sattentiontotheenvironment.它是個(gè)引起人們注意環(huán)境的特殊日子。eg：Payattentiontoyourhandwriting.注意你的書(shū)寫(xiě)。典例昨天，他不同尋常的講話吸引了我們的注意。

Hisunusualspeech________________________yesterday.講解來(lái)自《點(diǎn)撥》drewourattention

20kilometreswide

20千米寬

考向講解來(lái)自《點(diǎn)撥》知識(shí)點(diǎn)3表示長(zhǎng)、寬、高等用“基數(shù)詞＋單位詞(metre，foot，inch等)＋形容詞(long，wide，high等)”或者用“基數(shù)詞＋單位詞＋in＋名詞(length，width，height等)”。eg：Thewallis20metreslongand2metreshigh.＝Thewallis20metresinlengthand2metresinheight.這堵墻20米長(zhǎng)，2米高。典例這座建筑30米高。Thebuildingis________________________.【點(diǎn)撥】“基數(shù)詞＋單位詞(metre，foot，inch等)＋

形容詞(long，wide，high等)”可用來(lái)表示長(zhǎng)、寬、高。30metreshigh

講解來(lái)自《點(diǎn)撥》

asmanyas意為“多達(dá)……，和……一樣多”，修飾可數(shù)名詞復(fù)數(shù)。

講解來(lái)自《點(diǎn)撥》知識(shí)點(diǎn)4eg：Thereareasmanyastenthousandbirdsintheforest.這個(gè)森林里有多達(dá)一萬(wàn)只的鳥(niǎo)。as…as…和……一樣。中間用形容詞或副詞的原級(jí)。否定形式中，前面的as也可用so,即notso/as…as意為“不如……”。eg：IthinkEnglishisasimportantasChinese.我認(rèn)為英語(yǔ)和漢語(yǔ)一樣重要。Youaren’tas/sotallasyourbrother.你沒(méi)有你弟弟高。

考向講解來(lái)自《點(diǎn)撥》典例Steveisn’tas________asKelly.Heoftenmakesmistakesinhiswriting.(浙江麗水)A．careless

B．tidyC．carefulD．difficult【點(diǎn)撥】根據(jù)句意可知，Steve不如Kelly仔細(xì)，他經(jīng)常在書(shū)寫(xiě)方面犯錯(cuò)誤。as…as中間應(yīng)該用形容詞或副詞的原

級(jí)。故選C。C

講解來(lái)自《點(diǎn)撥》

almost/'??lm??st/adv.幾乎，差不多考向講解來(lái)自《點(diǎn)撥》知識(shí)點(diǎn)5eg：Ialmostmissedmytrain.我差點(diǎn)錯(cuò)過(guò)了火車。辨析almost與nearly

almost和nearly這兩個(gè)詞都表示“幾乎”，“差不多”的意思，在不少場(chǎng)合可以互換使用，但有以下區(qū)別：相同點(diǎn)不同點(diǎn)

nearly意思相近，肯定句中可以換用。nearly可以和not連用，notnearly是“遠(yuǎn)不”的意思，但almost不和not單獨(dú)連用。Themoneywillnotbenearlyenoughformyjourney.這些錢(qián)遠(yuǎn)不夠我旅行用。

almostalmost能和never，no，none，nothing，nobody等詞連用，這種情況下不能用nearly。講解來(lái)自《點(diǎn)撥》典例用almost或nearly的適當(dāng)形式填空。1．Therewas________nosnowthatwinter.2．Weare________________there.3．Thespeakersaid________nothingthatwasworthlisteningto.4．________________allthestudentslefthereafewminutesago.almost講解來(lái)自《點(diǎn)撥》nearly/almostalmost

Almost/Nearly

cutdown砍倒，縮減

講解來(lái)自《點(diǎn)撥》知識(shí)點(diǎn)6eg：Theycutdownthebigtree.他們把這棵大樹(shù)砍倒了。You’dbettercutthearticledowntoabout500words.你最好把這篇文章壓縮到五百字左右。與cut有關(guān)的短語(yǔ)有：cutin

打斷(談話)，插嘴eg：Don’tcutinwhenothersaretalking.當(dāng)別人正在講話時(shí)不要插嘴。Iwasjustcomingtothatpointwhenyoucutin.

我剛要談那一點(diǎn)，你就打斷我了。cutoff

切斷，斷絕 eg：Thefloodcutthevillagersofffromtherestoftheworld.洪水切斷了村民與外界的聯(lián)系?？枷蛑v解來(lái)自《點(diǎn)撥》Hecutoffabranchfromthetree.他從樹(shù)上砍下了一根樹(shù)枝。cutout

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

有人勸我飲食要忌糖。Icutoutoneparagraphinthisarticle.我刪除了這篇文章的一個(gè)段落。講解來(lái)自《點(diǎn)撥》典例政府告知我們不要砍倒這些樹(shù)。Thegovernmenthastoldus______________________________thetrees.【點(diǎn)撥】cutdown砍倒，tellsb.nottodosth.告訴某人不要做某事。

講解來(lái)自《點(diǎn)撥》tocutdownnot

worry/'w?ri/n.煩惱，憂慮v.擔(dān)心，擔(dān)憂

考向一講解來(lái)自《點(diǎn)撥》知識(shí)點(diǎn)7eg：Don’tworry.Iknowhowitturnedout.不要擔(dān)心。我知道事情怎樣發(fā)展。worry作及物動(dòng)詞，構(gòu)成結(jié)構(gòu)：worrysb.

使某人擔(dān)心。eg：Ididn’twanttoworrymyfriend.

我不想使我的朋友擔(dān)心。考向二worry作不及物動(dòng)詞，常構(gòu)成：Don’tworry.“不要擔(dān)心?！?；worryaboutsth./sb.“擔(dān)心某事/某人”。eg：Don’tworry.He’llbeallright.別擔(dān)心。他會(huì)平安無(wú)事的。Thechildhasnothingtoworryabout.這個(gè)孩子沒(méi)有什么可擔(dān)心的。講解來(lái)自《點(diǎn)撥》

考向三worriedadj.擔(dān)心的beworriedaboutsb./sth.擔(dān)心某人/某事eg：Don’tbeworriedaboutme.Icanlookaftermyself.不用擔(dān)心我。我能照顧自己。講解來(lái)自《點(diǎn)撥》

both…and………和……都

考向講解來(lái)自《點(diǎn)撥》知識(shí)點(diǎn)8both...and,neither...nor與either...or

的區(qū)別。both...and...表示“……和……都”，是指兩者兼而有之，連接兩個(gè)并列成分作主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞要用復(fù)數(shù)形式。neither...nor表示“既不……也不”，指兩者都不，連接兩個(gè)并列成分作主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞跟最鄰近的主語(yǔ)保持人稱和數(shù)上的一致。either...or

表示“或者……或者”或“不是……就是”的意思，是指兩者中的一個(gè)，它連接兩個(gè)并列成分作主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞跟最鄰近的主語(yǔ)保持人稱和數(shù)上的一致。講解來(lái)自《點(diǎn)撥》典例1.Youcantake________thispen________thatpen,butyoucan’ttakeboth.2．________Lily________Tomwillcomethisafternoon,becausetheyareverybusy.3．ShehaslearnedEnglishandChineseforyears，soshecanspeak________English________Chineseverywell.either講解來(lái)自《點(diǎn)撥》Neitherbothor

norand

carry/'k?ri/v.攜帶，搬運(yùn)講解來(lái)自《點(diǎn)撥》知識(shí)點(diǎn)9eg：Letmecarrytheboxforyou.讓我替你搬這個(gè)箱子吧。Shecarriedherbabyinherarms.她懷里抱著她的寶寶。用圖片表示bring，take與fetch的區(qū)別為：講解來(lái)自《點(diǎn)撥》拓展IaskedLilytofetchmeanEnglishbook，butshebroughtmeaChinesebook，soIaskedhertotakeittotheteacher’soffice.我讓莉莉去給我取一本英語(yǔ)書(shū)，她卻給我拿來(lái)了一本語(yǔ)文書(shū)，于是我讓她把它拿到老師的辦公室。魔法記憶講解來(lái)自《點(diǎn)撥》1.Readthelessonandcompletethetable.Fantasticfactsaboutbutterflies·Thebutterfliesalways________tothesamesmallpieceofforestand________thewinterthere.·Thebutterfliesthatreturntothesoutharethegreat-greatgrandchildrenofthebutterfliesthatleftforthenorth.·Thefemales________eggsononlyoneplant：milkweed.

return

spend

lay

Let'sDoIt!Thingsthatscientistscan’tunderstand·Howdothebutterfliesknowwhentoflysouth？·Howdothegreat-greatgrandchildrenofthebutterflies________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．Marywascarrying?abag.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、根據(jù)句意及漢語(yǔ)提示完成單詞1．Doyoulike________(生物學(xué))atschool?2．Look!Therearemany___________(蝴蝶)amongtheflowers.3．Thisisa________(極好的)film.4．I___________(完全地)forgotaboutit.5．Manypeople________(遷移)toCanadainthe1800s.來(lái)自《點(diǎn)撥訓(xùn)練》biologybutterfliesfantastic

completelymigrated來(lái)自《點(diǎn)撥訓(xùn)練》二、單項(xiàng)選擇6．Ourteacheroftenencourageshim________hard.

A．workB．workingC．toworkD．works7．Sinceenvironmentistooimportanttoallofus,wehumanbeingshadbetter________fewertrees.A．turneddownB．cutdownC．putdownD．cutupCB來(lái)自《點(diǎn)撥訓(xùn)練》8．Look!Mydogis________onthegroundinthesun.A．lieB．layC．laidD．lying9．(呼和浩特)Thephoto________takenbymybrotherlastweekisverynice.A．whichwereB．thatisC．thatwereD.whichwas10．(中考·上海)Thevolunteerspokeas________asshecouldtomakethevisitorsunderstandher.A．clearlyB．moreclearlyC．mostclearlyD．themostclearlyDDA來(lái)自《點(diǎn)撥訓(xùn)練》三、用方框中所給單詞或短語(yǔ)的正確形式填空drawone’sattention,cutdown,returnto,female，puzzling11．Ifyou____________thetrees，youwillharmtheenvironmenthere.12．Theinterestingstory________________.Wealllikedit.drewourattentioncutdown來(lái)自《點(diǎn)撥訓(xùn)練》13．Thefactofthisthingis________forscientists.14．They____________theirowncountry.15．The________butterflieslayeggsinspring.returnedto

female

puzzlingdrawone’sattention,cutdown,returnto,female，puzzling本節(jié)課主要學(xué)習(xí)了以下重點(diǎn)內(nèi)容:（1）重點(diǎn)單詞：living,almost,worry,carry等。（2）重點(diǎn)短語(yǔ)：drawone’sattention,20kilometreswide,asmanyas,cutdown,both…and…等。1.熟記本課時(shí)的詞匯2.完成本課時(shí)的課后作業(yè)課后作業(yè)5UnitLesson28TheStudyofLivingThings

學(xué)習(xí)目標(biāo)objectivesTolearnsomenewwords:biology，fantastic,butterfly……Tounderstandthepassage.TolearnAttributiveclause.Leadin1.Wouldyouliketobeabiologistwhenyougrowup?Whyorwhynot?2.Whatmysteriesofnaturedoyouknowabout?Thinkaboutit生物蝴蝶遷徙;移居奇異的完全地孫子(女)；外孫(女)雌性馬利筋（一種植物）化學(xué)物質(zhì)令人費(fèi)解的biologyn.butterflyn.migratev.fantasticadj.completelyadv.grandchildn.femalen.milkweedn.chemicaln.puzzlingadj.WordsPre-reading1.引起某人的注意

2.回到、返回

3.多達(dá)

4.下蛋

5.在大學(xué)里6.小片的森林7.動(dòng)身去某地drawone’sattentionUsefulexpressions:returnto…asmanyaslayeggsatauniversitysmallpieceofforestleaveforWhile-reading1.IntheUnitedStatesandMexico,farmersusechemicalsthatkillmilkweed.2.Dothefemaleslayeggsononlyoneplant?________________________________.3.WhatdoesDr.ChipTaylorstudy?_______________________________________________.4.Here,asmanyas___________butterfliesspendthewinter.5.InMexico,thebutterfliesalwaysreturntothesamesmallpieceofforest,whichisonly20kilometerswide.___________________________________________Readthelessonandfinishtheexercise.FYes,theydoHestudiesonekindofNorthAmericanbutterfly230million在墨西哥，這種蝴蝶總是回到僅有20千米寬的同一小片森林。T√1.有關(guān)attention的短語(yǔ)2.as…as的用法3.lie與lay的用法fantasticchemicalhavebeendrawingLanguagePointsattentiondrawone’sattentiontosth.(使某人注意某事).2.catchone’sattention(引起某人注意)3.payattentiontosth.(注意、留心)4.giveone’sattentiontosth.(關(guān)心)as…as…1.Heis___________hisfather.(像……一樣高)2.Idomyhomework___________mysisterdoes.(像……一樣認(rèn)真)3.Theysee___________onehundredstudentsinfrontofthelibrary.(像……一樣多)astallasascarefullyasasmanyaslie與layThehens_____(lay)eggseveryday.Haveyouever______(lie)toyourparents?layliedlay(下蛋)---laid---laid---layinglie(說(shuō)謊)---lied---lied---lyinglie(平躺)---lay---lain---lying作形容詞，意為“奇異的、極好的、了不起的”，在句中作定語(yǔ)或表語(yǔ)。如：4.fantasticIthinkthisisafantasticinvention.我想這是一個(gè)了不起的發(fā)明。作可數(shù)名詞，意為“化學(xué)物質(zhì)、化學(xué)制品”，復(fù)數(shù)形式是chemicals。如：Therearenochemicalsinthiskindoffood.這種食品中沒(méi)有化學(xué)物質(zhì)。5.chemical作形容詞，意為“化學(xué)的、化學(xué)作用的”，在句中作表語(yǔ)或定語(yǔ)。如：Wecanfindchemicaladditivesinmanyfoods.我們?cè)诤芏嗍称分邪l(fā)現(xiàn)了化學(xué)添加劑。句中的havebeendrawing是現(xiàn)在完成進(jìn)行時(shí)，它由“助動(dòng)詞have(has)+been+現(xiàn)在分詞”構(gòu)成，當(dāng)主語(yǔ)是第三人稱單數(shù)時(shí)用助動(dòng)詞has，其他情況用助動(dòng)詞have。6.FantasticfactsaboutthebutterflyhavebeendrawingDr.Taylor’sattention.它往往與表示一段時(shí)間的時(shí)間狀語(yǔ)連用，如：allthetime,thismonth,allday,thesefewdays,forayear,sinceaweekago等。Shehasbeenplayingbasketballafterschoolthisweek.這個(gè)星期她放學(xué)后一直打籃球。Tonyhasbeendrawinginhisbedroomalltheafternoon.托尼在臥室畫(huà)了一下午。Whatdoyouthinkisthemostfascinatingthinginnature?Post-readingDiscussionAreyoufamiliarwiththesesentences?Theyarefromthebookswehavelearned.1.InMexico,thebutterfliesalwaysreturntothesamesmallpieceofforest,whichisonly20kilometreswide.2.Thebutterfliesthatreturntothesoutharethegreat-greatgrandchildrenofthebutterfliesthatleftforthenorth.3.ButinMexico,peoplecutdownthetreesthatthebutterfliesneedtorestonbecausetheywantmorelandforfarming.4.IntheUnitedStatesandCanada,farmersusechemicalsthatkillmilkweed.AttributiveClause定語(yǔ)從句Grammar

定語(yǔ)從句是指在句中作定語(yǔ)的______。先行詞是被定語(yǔ)從