初中2a-2d教课ppt课件

这是一份初中2a-2d教课ppt课件，文件包含第2课时SectionA2a-2dpptx、SectionA2band2cwav等2份课件配套教学资源，其中PPT共28页， 欢迎下载使用。
It tk half a day t reach the twn.
With the new rad, it takes nly nearly 40 minutes.
Ging t schl by bus tk nearly an hur.
Ging t schl takes nly 15 minutes.
Li Rui’s hmetwn has change greatly.
Traffic (交通)
used t travel far t see a dctr.
has built a new hspital
didn’t have gd places fr shpping
nw have a supermarket dwn the street
Public facilities (公共设施)
They are nw cvered with beautiful trees.
Envirnment (环境)
The hills were cvered with sand.
What prblem des the picture shw?
/ˈsændstɔːm/
A sandstrm (沙尘暴) is a strng, dry windstrm that carries large amunts f sand, dust, and fine sil particles int the air.
There is nt enugh clean, usable water t meet the needs f peple, farms, factries, r the envirnment in a certain area.
Nt enugh land fr farming.Nt enugh fields t plant rice, wheat, vegetables, etc.Maybe caused by urban expansin, desertificatin, land being built int huses r factries
Nt having enugh mdern tls, machines, skills r knwledge t d smething effectively.
water shrtage
farmland shrtage
lack f technlgy
Rank the fllwing prblems frm 1 t 4, with 1 being the wrst. Give yur reasns.
farmland shrtage
Give yur reasns.
Water is the mst basic need fr all living things, including peple, animals, and crps. Withut enugh clean water, peple cannt drink r ck, crps will die, and daily life will stp. This prblem directly threatens human survival, s it is the mst serius.
Farmland is where we grw fd. If there is nt enugh farmland, we cannt prduce enugh fd fr everyne. Fd shrtages can lead t hunger and scial prblems.
Sandstrms can damage huses, pllute the air, and make it hard t breathe. They can als destry crps and make farmland wrse. Hwever, they are usually seasnal r reginal prblems, and their impact is nt as cnstant r cmmn as water r farmland shrtages.
A lack f technlgy makes slving the ther three prblems harder, it is nt a direct threat t survival itself. Cmpared t the ther three prblems, its effects are mre indirect and can be imprved ver time.
Listen t the cnversatin between Gerge’s father and Li Rui’s grandfather. What prblems in 2a did they mentin?
Hw has the envirnment affected lcal lives?
There used t be __________ all the time, and the ______ were getting smaller and smaller.Lcals wrked by ___________.
Lcals fund a bush. It had ________ rts that culd _________the sil tgether.They began planting it in sandy ________, with the gvernment’s supprt.They had __________ t help.
The crn fields are _________.They have planted many bushes and _________ since then.They are __________sandstrms nw and the envirnment is getting _________.It has imprved lcal lives.
View and predict
What speech f wrd is prbably missing in the blanks?
There used t be+某人/某物(+其他). 过去有
Listen again and fill in the table.
Read and check the answers.
I’m amazed by hw green yur hmetwn has becme!Have yu seen the crn fields utside f the twn yet?Yeah! They’re huge!There used t be sandstrms all the time, and the fields were getting smaller and smaller. Then, after ne big sandstrm, we decided t d smething.What did yu d?We fund a small bush. It had lng rts that culd hld the sil tgether. We began planting it in sandy areas. The gvernment prvided supprt t.
Bb:Grandpa:Bb:Grandpa:Bb:Grandpa:
Wasn’t it difficult t plant s many bushes? Yes, it was. At the beginning, we wrked by hand. Later, we had machines t help. We have planted many bushes and trees since then. There are fewer sandstrms nw and the envirnment is getting better. It has als imprved ur lives. Everyne has becme richer and happier.
Bb:Grandpa:
Discuss hw the prblems in 2b were slved.
A: The area used t be cvered with sand.B: What did they d t slve this prblem? A: They planted bushes and trees. The land has becme ...
A: The area used t be cvered with sand.B: What did they d t slve this prblem?A: They planted bushes and trees. The land has becme useful. Lcal peple can grw vegetables and fruits here nw, and their life is getting better and better.
1. water shrtage （教材 P3）
shrtage /ˈʃɔːtɪdʒ/ [名词]短缺搭配：a shrtage f 缺少…… 其后常接 water, mney, material 等表具体物质或资源类的名词。句型：There is n shrtage f... 不缺…… /……有的是The city is suffering frm a shrtage f fresh water.这座城市正遭遇淡水短缺。There is n shrtage f (=There are plenty f) things t d in the city. 城市里不愁没活干。
2. lack f technlgy（教材 P3）
lack /læk/(1) [名词]缺乏搭配: lack f 缺乏…… 其后常接 sleep, interest (兴趣), patience，curage 等表抽象概念的名词。The research shws that lack f sleep can affect ur memry.研究表明，睡眠不足会影响我们的记忆力。(2)[动词]缺乏；不足She used t lack cnfidence, s she seldm answered questins in class. 她过去缺乏自信，所以她很少在课堂上回答问题。
3. It had lng rts that culd hld the sil tgether. （教材 P3）
rt /ruːt/ [名词](1)根 Plants take in water thrugh their rts.植物通过根来吸收水分。(2) 根源；起因 搭配：the rt f ……的根源/起因Lack f educatin is the rt f these scial prblems.教育缺失是一些社会问题的根源。
4. We began planting it in sandy areas. （教材 P3）
sandy /ˈsændi/[形容词]铺满沙子的；含沙的由“sand(n.沙子)+-y”构成搭配：sandy sil 沙质土壤 sandy beach 沙滩My aunt grew sme peanut in sandy sil.我姑姑在沙地里种了一些花生。
5. The gvernment prvided supprt t. （教材 P3）
supprt /səˈpɔːt/(1)[不可数名词]支持 搭配：with ne’s supprt 在某人的支持下With yur supprt and help, we succeeded in finishing the prject n time. 在你们的支持和帮助下，我们成功地按时完成了项目。
(2)[动词]支持 搭配 supprt sb in (ding) sth 在(做)某事方面支持某人Whatever yu d, we will supprt. 无论你做什么，我们都支持你。His family supprted him in making his wn decisin.他的家人支持他自己做决定。(3)[动词]赡养；抚养She has t wrk hard every day because she has tw children t supprt. 她必须每天好好工作，因为她有两个孩子要抚养。