Unit 2 Plant a Plant Lesson 8 Why Are Plants Important教学课件【八年级英语下册（冀教版）】

Lesson8WhyArePlantsImportant?Unit2PlantaPlantWordssoiln.土，土壤shaden.树荫pleasantadj.使人愉快的fulfillv.达到；执行basicadj.基本的；基础的Questions*Whatwouldhappenwithoutfood?*Whatkindofthingscantrees(plants)

do?Inpairs,readthetextandanswertothefollowingquestions.1.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。Languagepoints2.Thenwecansitintheshadeunderatree.in

the

shade“在阴凉处”类似短语

inthesuninthelight

在阳光下在灯光下3.

Donutsdon’tgrowontrees!

on

trees“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.

在零下摄氏度的时候水会变成冰。WaterturnsintoiceatzerodegreesCelsius.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.他没说再见就走了.Heleftwithoutsayinggood-bye.没有水鱼就不能活.Fishcan’tlivewithoutwater.Whyareplantsimportant?Treeshelp____theair.Trees____usfood.Wecan____thingswithtrees.Wecan___underatree.We___booksfromtrees.Manyanimals____intrees.cleangivebuild

sit

makeliveAllplantstakeenergy______thesunandturnit______food.A.to;fromB.into;toC.from;toD.from;intoExercise2.Plantscanhelp__theair.A.tocleanB.cleaningC.cleanD.ofcleaning3.Wine______wheat.A.ismadefromB.ismadeofC.ismadebyD.ismadein4.Iwouldfail___yourhelp.A.inB.withC.withinD.withoutWhydoweneedplants?Findsomeanswerstothisquestion.Writedownyouranswers.

let'sdoit!PeopleuseplantsinmanywaysForfoodThereareabouteightythousanddifferentplantsintheworldthatpeoplecaneat.Buthalfoftheworld’sfoodcomesfromonlythreeplants:rice,cornand