冀教版八年级下册Lesson8WhyArePlantsImportant课件

Lesson8WhyArePlantsImportant?soiln.土，土壤shaden.树荫pleasantadj.使人愉快的fulfillv.达到；执行basicadj.基本的；基础的Whatwouldhappenwithoutfood?Whatkindofthingscantrees（plants）do?Inpairs,Readthetextandanswertothefollowingquestions1.Treeshelpcleantheair.树能帮着清洁空气。helpvt.帮助，常用于两个句型：helpsb.(to)dosth.=helpsb.withsth.“帮助某人做某事”。介词with后接名词，通常不接动词-ing形式。Mr.WuhelpsmelearnEnglish.=Mr.WuoftenhelpsmewithmyEnglish.吴先生帮我学英语。2.Thenwecansitintheshadeunderatree.intheshade“在阴凉处”类似短语inthesuninthelight在阳光下在灯光下3.Donutsdon’tgrowontrees!ontrees“在树上”onthetree树本身的东西，长在树上。inthetree外来的东西，不是树本身的东西e.g.树上有几只鸟.Therearesomebirdsinthetree.树上有很多苹果.Therearemanyapplesonthetree.看!风筝在树上.Look!Thekiteisinthetree.4.Thetreesandplantstakeenergyfromthesunandturnitintofood.turn…into…“把…转化…”e.g.我们可以把树制成纸.Wecanturnthetreeintopaper.takeenergyfrom“从…中获取能量”5.Medicineandclothingarealsomadefromtreesandplants.与make有关的被动语态的短语bemadefrom由(看不出原料)制成bemadeof由(看出原料)制成bemadeby被(某人)制造bemadein在(某地)制造6.Wecan’tlivewithoutplantswithout介词“没有”e.g.他没有吃早饭就去上学了.Hewenttoschoolwithoutbreakfast.没有水鱼就不能活.Fishcan’tlivewithoutwater.Whyareplantsimportant?Treeshelp______theair.Trees______usfood.Wecan______thingswithtrees.Wecan_____underatree.We______booksfromtrees.Manyanimals______intrees.cleangivebuildsitmakeliveExercise1.Allplantstakeenergy______thesunandturnit______food.A.to;fromB.into;toC.from;toD.from;into2.Plantscanhelp__theair.A.tocleanB.cleaningC.cleanD.ofcleaning3.Wine______wheat.A.ismadefromB.ismadeofC.ismadebyD.ismadein4.Iwouldfail___yourhelp.A.inB.withC.withinD.withoutWhydoweneedplants?Findsomeanswerstothisquestion.Writedownyouranswers.ForfoodThereareabouteightythousanddifferentplantsintheworldthatpeoplecaneat.Buthalfoftheworld’sfoodcomesfromonlythreeplants:rice,cornandwheat.Wemakemanymedicinefromplants.What’smedicine?Doctorsusemedicinetohelpsickpeople.Weusewoodfromtreestobuildhousesandfurniture.Tables,chairsandbedsarefurniture.Soisyourdesk.Manyanimalsliveintheforest.Isyourshirtmadeofcotton?Cottonismadefromthecottonplant.Doyouhaveahatmadeofstraw?Strawhatsaremadefromthestemsofgrassplants.Lookatthethingsonyourdesk.Books,paper,pencils,erasersandtheinkinyourpenallcomefromplants.Plantshelpmaketheaircleanandfresh.Theplantscoverthesoilandcanstopthedust.SummarizeTreesareveryimportanttopeople1.Treesandotherplantshelpcleantheair.2.Treesandplantsareimportanttopeople,theyhelpusfulfillourbasicneeds.Wecanbuildthingswithtrees.3.Thetreesandplantstakeenergyfromthesunandturnitintofood.4.Medicineandclothingarealsomadefromtreesandplants.5.Plantscoverthesoil.Thatway,thewindandwaterdon’tcarrythesoilaway.6.Plantsalsomakeeverythinglookbeautiful.7.Manyanimalsliveintheforestandeatthefruitfromthetrees.Inaword,wecan’tlivewithoutplants.1.完成练习册第8课（Lesson8inExerciseBook）2.记忆单词和短语3.熟读课文，背诵重点句子1.LearnthewordsinLesson9byheart.2.ReadthedialogueinLesson9andunderlinetheusefulphrases.