高中英语人教版 (2019)选择性必修 第一册Unit 5 Working the Land示范课课件ppt

这是一份高中英语人教版 (2019)选择性必修 第一册Unit 5 Working the Land示范课课件ppt，共17页。PPT课件主要包含了para1-2，para3，para4，para5，词块积累等内容，欢迎下载使用。
CHEMICAL VERSUS ORGANIC FARMING
Evaluate chemical farming and rganic farming
bacteria and insects
damage they cause t peple and the envirnment
water inside
natural waste frm animals
change the kind f crp
different depths
demand fr fd arund the wrld
Read again, and make cmparisns between chemical farming and rganic farming.
1.widespread use since the middle f the 20th century
2.kill harmful bcteria and insects
chemical farming
1.Organic farming is simply farming withut using any chemicals.
2.thrugh natural means
3.use natural waste frm animals as fertiliser
4.change the kind f crp grwn .
rganic farming
Accrding t the infrmatin yu’ve learnt frm the text, cme up with three main pints t supprt yur pinin, and then add at least ne detail t supprt each main pints. Cmplete the utline belw.
Tpic sentence: In my pinin, ________________farming is preferable t_________________ farming because________________________________________.
Cnclusin: _______________________________________________________________.
language pints
The shelter, which culd prtect up t 8,000 peple frm wartime bmbs, _______________ tw large tunnels that were intended t ne day becme an extensin f the Lndn undergrund.
was cmprised f
★bmb: n. 炸弹 vt. 轰炸 对投炸弹 e.g. bmb threat / bmb explde They bmbed the city at dawn .★extensin: n. 扩建部分； 扩大； 电话分机 e.g. the extensin f the President's pwers. extensin number ★extend : v. 扩大；伸出；延长；延伸；提供；包括； e.g. They asked the gvernment t extend its perid f deliberatin（审议）. The neighbrhd came t extend their cngratulatins n his sn’s admissin t the university.
chemistry n. 化学；化学过程chemical n. 化学制品，化学药品 复数 chemicals adj. 化学的
1. The whle fd chain has been affacted by the veruse f __________ in agriculture. (chemistry, chemicals)2. Organic _____________ is cnsidered t have riginated in the early 19th century.(chemistry, chemicals)
deliberatin.
Hwever, what she is unhappy abut is the lwer nutritinal value and reduced flavur.
flavur: n. 味道；风味；特点 v. 给调味 bitter flavur /delicate flavur six different flavurs f ice-cream The stries have a strng reginal flavur. I have tried t cnvey smething f the flavur f the argument. (像的想法）
This affects the crps grwn n the land and , in turn, the animals and humans wh digest them.
All this has upset me. I need time t digest it all.
Greasy（油腻的） fd is hard t digest.
This text is difficult t digest.
As fr chemical fertilisers, crps grwn with them usually grw t fast t be rich in nutritin.
nutritin：（u) n. 养料的供给；养料的摄取；营养学；食物；营养物
pr nutritin 营养不良A balanced diet prvides nutritin fr yur bdy.
●Despite numerus claims that meal-replacement prducts prvide sufficient nutritin and calries, using them ver a lng perid, insteadf eating three regular meals a day, culd pse health risks, accrding t experts.●Yang Yuxiang ,a senir nutritinist ,said chsing healthy meal-replacement prducts culd be an acceptable substitute fr peple wh want t cntrl their weight.●Meal replacement need t have enugh healthy nutrients as well as vitamins and minerals.●Experts call fr “healthier, safer, and mre nutritius diets ”.
（n./adj)营养素，营养物
adj. nutritinal营养的
They may lk beautiful n the utside, but inside there is usually mre water than essential minerals.
essential: adj. 比不可少的， 最重要的essentially: adv. 本质上， 根本上 （basically)
1). be essential t sth2). be essential fr sb t d sth3). It is essential that... (shuld) d sth4). It is essential fr sb t d sth
Sun and water is/ are essential t the grwth f crps.
The wrds are essential fr everydy t learn English.
It is essential that yu get a visa befre yu travel abrad.
It is essential fr high-new technlgy enterprises t strengthen cmpetitive pwer.
As an alternative, sme farmers have switched t rganic farming,...
alternative: v. alter （使）改变，（使） 变化adj. (只用于名词前）可供替代的，可供选择的非传统的，另类的n.(c) 选择， 供选择的东西adv. alternatively 二者选其一地； 或者
The way was blcked, s we went by an alternative rad.
an alternative lifestyle / alternative energy
I had n alternative but t reprt him t the plice.I hpe my bks can prvide an alternative t parents wh want their kids t learn mre abut Chinese culture.
I culd cme t yur huse, r alternatively we culd meet in twn.
... but many ther vegetables put dwn deep rts.
rtn. （c) 根， 根源， 起源，词根v. (使）生根， （使）扎根rted: adj. 一动不动的，生了根似的
After 20 years in America, he still feels his rts are in China.the rt f sth ... 之源has ne's rts in ... ...起源于 rt in ne's mind 在某人的头脑里生根
rt yur cuttingsYur cuttings has rtedbe rted in 扎根于 根源在于rt ut/up 连根拔起
she fund herself rted t the spt in disbelief.
What ther imprtant aspects f agriculture d yu want t knw abut?
aspect:(c) 方面（U）外观，样子
in this/ that aspectin every aspect / frm every aspectTechnlgical change is everywhere and affects every aspect f life.
Our schl takes n an entirely new aspect.
1. fr instance2. in turn3. at a depth f4. a diverse range f crps5. high cst f prducing fd6. great effrt required t farm7. keep peple and the envirnment as healthy as pssible8. find a suitable slutin9. nwhere near10. damage t the envirnment11. switch t12. a great way t increase prductin13. in widespread use14. rganic farming
保持环境和人尽可能的健康