冀教版英語(yǔ)八下Unit2Lesson133

Lesson13:

Whyareplantsimportant?MewwordsThinkaboutittextprojectNewwordsairn.空氣shaden.樹(shù)蔭nothingpron沒(méi)有東西.diev.死energyn.能量heatn.熱；ｖ.加熱bamboon.竹子kilogramn.千克ThinkaboutitAretherealotoftreeswhereyoulive?Whyorwhynot?Whydoweneedtrees?Whatkindofthingscanplantsdo?WeneedtreesJ:Let’stalkabouttreesandwhyweneedthem.Treeshelpcleantheair.Itispleasanttowalkamongthetrees.Theygiveusfood–likeapples,bananasandoranges.B:Donutsdon’tgrowontrees!Butwecanmakeandbuildthingswithtrees–likechairs,bedsandhouses!D:Sometimestheweatherissunnyandhot.Thenwecansitunderatreeintheshade.J:Wemakebooksfromtrees.Also,manyanimalsliveintrees.DLDoplantsdootherthings?B:Plantscoverthesoil.Thenthewindandwaterdon’tcarrythesoilaway.J:Allplanttakeenergyfromthesunandmakeitintofood.Peopleandotheranimalsneedthefoodtolive.Withoutfood,theywouldhavenothingtoeatandtheywoulddie.B:Whatisenergy?Lightisenergy.Heatisenergy.D:Ineedfoodtolive.Dinosaursneedalotoffood!Theyneedalotofdonuts!Someanimalseatonlyoneplant.Pandaseatbambooonly.Bigpandaseateighteenkilogramsofbambooeveryday!Let’stalkabouttreesandshyweneedthem.我們討論樹(shù)和我們?yōu)槭裁葱枰獦?shù)。Let’s=Letus意為“讓我們”，let是動(dòng)詞，us做let的賓語(yǔ)，該句型結(jié)構(gòu)為letsb.dosth.“讓某人做某事”。表示說(shuō)話人的建議，對(duì)該句型的肯定回答一般用“OK”“Allright.”“Yes,let’s…”。其否定回答用”Sorry,I…”。--Let’shaveacupoftea.–OK.我們喝杯茶吧。好吧。--Let’ssingABCsong.–Sorry,Ican’tsingit.我們唱字母歌吧。對(duì)不起，我不會(huì)唱。Treeshelpcleantheair.樹(shù)能幫著清潔空氣。

helpvt.幫助，常用于兩個(gè)句型：helpsb.(to)dosth.和helpsb.withsth.都有“幫助某人做某事”之意。介詞with后接名詞，通常不接動(dòng)詞-ing形式。Mr.Wuhelpsme(to)learnEnglish.=Mr.WuoftenhelpsmewithmyEnglish.吳先生幫我學(xué)英語(yǔ)。It’spleasanttowalkamongthetrees.pleasantadj.指一般性的好，強(qiáng)調(diào)所修飾對(duì)象所具有的品質(zhì)使人覺(jué)得好玩、有趣、舒服，含有客觀性。pleasedadj.只用于人不用于物，指某人滿足了自己的愿望而感到高興。I’mverypleasedyoucancome.

pleasuren.Among：三者..三者以上之間Between:兩者之間Donutsdon’tgrowontrees!樹(shù)上不結(jié)面包圈。ontrees在樹(shù)上辨析：onthetree(ontrees)與inthetree(intrees)兩者都表示“在樹(shù)上”，用in時(shí)一般表示不從屬于樹(shù)本身生長(zhǎng)的，如鳥(niǎo)、人等。用on時(shí)則指樹(shù)本身的東西，如樹(shù)葉、花等。從空間的角度看，用in表示在樹(shù)上的枝葉中，用on則表示在枝葉上，in和on不能互換。Therearesomeapplesonthetree.樹(shù)上結(jié)著一些蘋(píng)果。Thereisabirdinthetree.樹(shù)上有一只鳥(niǎo)。Also,manyanimalsliveintrees.許多動(dòng)物也可以住在樹(shù)上。alsoadv.也Mr.Greenalsocame.格林夫人也來(lái)了。辨析：also,too與either三者都表示“也”。also較正式，位置靠近動(dòng)詞，不置于句末。too用于口語(yǔ)，常置于句末，邊用逗號(hào)，也可用于句中，前后均用逗號(hào)。either一般用于否定句中Healsoplaysthepiano.他也彈鋼琴。Iamadoctor,too.我也是個(gè)醫(yī)生。Heisn’taworker,either.他也不是個(gè)工人。Thenthewaterdon’tcarrythesoilaway.這樣風(fēng)和土就不會(huì)把土壤刮走、沖走。carryaway把搬（移）走thefloodcarriedawaythewoodenbridge.洪水把橋沖走了。Allplantstakeenergyfromthesunandmakeitintofood.所有的植物從陽(yáng)光中吸收能量并（用它）來(lái)制造養(yǎng)料。make…into…意思是“把……制成……”。例如：Wecanmakethetreeintopaper.make還可以和其他介詞連用，常用在被動(dòng)語(yǔ)態(tài)里；如：bemadefrom由（原料）制成bemadeof由（原料）制成bemadein在某地制造Withoutfood,theywouldhavenothingtoeatandtheywoulddie.沒(méi)有食物，他們將沒(méi)有可吃的東西并且死亡。1)withoutprep.無(wú)，沒(méi)有；反義詞with.如：Fishcan’tlivewithoutwater.沒(méi)有水魚(yú)不能活。Wecan’tfinishtheworkontimewithoutyourhelp.沒(méi)有你的幫助我們不會(huì)按時(shí)完成工作。2)diev.死，死亡。dead是形容詞。death是名詞。dying是現(xiàn)在分詞。Hehasbeendeadfortenyears.他已經(jīng)死了十年了。Herdeathisverygreat.她死的非常壯烈。Thelittlegirlisdying.這個(gè)小女孩快要死了。Shediedlastnight.她昨天晚上去世啦。Readthethetextand

answerthequestion?Whydoweneedplants?Treescanhelp

cleantheair.Plantsalsogiveusfood.Peopleneedfoodtolive.Wecanmakeandbuildthingswithtrees---likechairs,bedsandhouses.Treescangiveusshadeinthehotweather.Plantscanstopthewindandwaterfromcarryingthesoilaway.FascinatingfactsPandaseatbambooonly.Bigpandaseatabout18kilogramsofbambooeveryday.Whydoweneedtrees?1.Cleantheair.2.Giveusfood.3.Makeandbuildthingswithtrees.4.Situnderatreeintheshade.5.Makebooksfromtrees.6.Manyanimalsliveintrees.7.Coverthesoil.8.Takeenergyfromthesunandmakeitintofood.peopleandanimalsneedthefoodtolive.Retellthetext.

Treeshelp______theair.Theygiveus____--likeapples,bananasandoranges.Wecan______and_____thingswithtrees—likechairs,bedsandhouses!Wecansitunderatreeinthe______.Plants_______thesoil.Thenthewindandwaterdon’t_______thesoilaway.Allplantstake________fromthesunandmakeit.Intofood.Peopleandotheranimalsneedthefoodto______.Withoutfood,theywould_______.cleanfoodmakebuild

shadecovercarryenergylivedieexcerciseChoosethebestanswwer.1.Aretheremanytrees_____?A.wheredoyouliveB.YoulivewhereC.whereyouliveD.youlivethere2.Let’s______treesandwhyweneedthem.A.totalkaboutB.talkingaboutC.talkatD.talkabout3.Donutsdon’tgrow____trees.A.inB.onC.atD.from

CDB4.Wemakebooks____trees.fromB.onC.atD.in