市赛课件book4unit2usinglanguage.ppt

《市赛课件book4unit2usinglanguage.ppt》由会员分享，可在线阅读，更多相关《市赛课件book4unit2usinglanguage.ppt（14页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、 production n._ bacteria n._ pest n._ nutrition n._ mineral n._discovery n._ soil n._ reduce vt._ root n._Words&Expressions review产产量量细细菌菌害虫害虫营营养养矿矿物物发现发现土壤土壤减少减少根根cause damage tolead tobuild upkeepfree fromfocus on对对造成造成损损害害导导致致逐逐渐渐增增强强使使免受影响免受影响集中（精力）于集中（精力）于Stir-fried tomatoes and eggsUnit2 Using

2、 language readingChemical or organic farming?advantageStop _ and increase_disadvantageto the land and crops 1.Kill helpful _ and _2.Chemicals get _ the crops and cant just be _.to our health1.The chemicals _ in our body2.Many chemicals can _ cancer.3.Crops grow too fast to be full of _.diseasesprodu

3、ctionbacteriapestsinsidewashed offbuild uplead tonutritionReading Task IAbout chemical fertilizer With these _,some farmers and many customers are beginning to turn to organic farming.Organic farming is simply farming without using any chemicals.They _ on keeping their _ rich and free of disease.A h

4、ealthy soil _ disease and helps crops grow strong and healthy.Organic farmers,therefore often prefer using _ waste from animals as fertilizer.They feel that this makes the soil in their fields richer in minerals and so more fertile.This also _ the air,soil,water and crops _ from chemicals.discoverie

5、sfocus soil reduces natural keeps freeListening TaskAbout organic fertilizer_Which of the following methods is NOT organic farming?A.Farmers often change the kind of crop in each field every few years.B.The farmer is using fertilizers to keep the vegetables free from pests.C.Farmers plant crops to u

6、se different levels of soilD.Some farmers prefer planting grass between crops to prevent wind or water from carrying away the soil.Reading Task IIAbout organic fertilizerChemical or organic farming?Why?Speaking (Task 1)The farmer is selling his/her green food to the customer.What are the advantages

7、of?The advantages are?Id prefer because I dont like becauseId rather Its more expensive but nutritious delicious safe health environmentSpeaking(Task2):Role-playDialogue:F=Farmer C=CustomerF:Good afternoon!Would you like some _?C:What is the advantage of _？F:The advantage of these vegetables is that

8、_.C:How much is it?F:_ a kilo.C:But its a little_!I would rather to buy some cheaper ones.F:Well,let me explain._.C:Ok.If these organic food _,I will buy some.carrotcucumberpeastrawberrypumpkineggplanttomatoOrganic farmingmoretreesrecycle(回收)no littering(乱扔)With the improvement of peoples life,more and more people choose organic food,because organic food is grown_.The advantages are as follows:First,_.Second,_.Third,_.So its better for us to choose organic food.(be good for;be rich in;be grown away from;keep free from;Its certain to be)Thank you