初中英语人教版（2024）九年级上册（2024）2a-2d图文课件ppt

这是一份初中英语人教版（2024）九年级上册（2024）2a-2d图文课件ppt，共35页。PPT课件主要包含了学习目标， 情景导入， 学习理解， 迁移创新， 考点大全， 课堂小测，to see，used，cleaner，that has等内容，欢迎下载使用。
通过本节课学习，学生能够：
Learning Objectives
Scenari Intrductin
Watch a vide
Learning t understand
Read and guess
This happens when strng winds blw sand everywhere. Peple can't see clearly and it's hard t breathe.
Let's play a guessing game! I'll describe sme envirnmental prblems. Guess what they are.
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.
This happens when peple dn't have mdern tls r knwledge t slve prblems efficiently.
There is nt enugh clean, usable water t meet the needs f peple, farms, factries, r the envirnment in a certain area.
These prblems nce made life very hard in Li Rui's hmetwn. Which prblem was the biggest challenge? Let's g t 2a and rank them.
Rank the fllwing prblems frm 1 t 4, with 1 being the wrst.
Give yur reasns.
Water shrtage — Rank 1 (the wrst)
Reasn:If there is nt enugh water, peple can’t live r grw fd well.
Sandstrms — Rank 2
Reasn:Sandstrms hurt peple’s health and damage crps.
Farmland Shrtage — Rank 3
Reasn:And nt enugh land means nt enugh fd.
Lack f Technlgy — Rank 4
Reasn:Technlgy is imprtant, but peple can still wrk withut it.
Brainstrm and share yur ideas.
What prblems d these cause? Can yu make a chain?
lack f trees
farmland shrtage
difficult envirnment
Hw can we slve these prblems? Let’s ask Li Rui’s grandfather.
03 应用实践 听说活动
Applicatin Practice
Listen t the cnversatin between Gerge’s father and Li Rui’s grandfather. What prblems in 2a did they mentin?
There used t be sandstrms all the time... There are fewer sandstrms nw...
the fields were getting smaller and smaller.
the envirnment is getting better.
Listen again and fill in the table. Hw has the envirnment affected lcal lives?
Listen again and check the answers.
Bb: I’m amazed by hw green yur hmetwn has becme!Grandpa: Have yu seen the crn fields utside f the twn yet?Bb: Yeah! They’re huge!Grandpa: 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.Bb: What did yu d?Grandpa: 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: Wasn’t it difficult t plant s many bushes?Grandpa: 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.
04 迁移创新
Migratin Innvatin
Discuss hw the prblems in 2b were slved.
Sandstrms → They fund a bush whse rts culd hld the sil tgether.Farmland shrtage → They planted the bush in sandy fields with the gvernment's supprt.Difficult envirnment → Everyne wrked tgether and the land has becme green.
What can we learn frm the changes in Liu Rui’s grandpa’s hmetwn?
Every big change starts with a small step.The future f ur hmetwn is in ur hands.
Language pints
1、I’m amazed by hw green yur hmetwn has becme!
be amazed by sth. 为固定短语，意为 “对…… 感到惊讶 / 惊叹”。amazed 是形容词，主语通常为人，描述人的感受。
例句：我对我们城市的巨大变化感到惊叹。
I am amazed by the great changes in ur city.
2、There used t be sandstrms all the time, and the fields were getting smaller and smaller.
used t d sth. / There used t be... 表示过去常常 / 过去曾经存在，暗指现在情况已经发生改变。后接动词原形，只用于描述过去。
例句：我家附近曾经有一条小河。
There used t be a small river near my hme.
3、There used t be sandstrms all the time, and the fields were getting smaller and smaller.
比较级 + and + 同一比较级，意为 “越来越……”，用来描述人或事物持续发生变化。单音节形容词直接变化，如 smaller and smaller（越来越小）。
例句：这些树长得越来越高了。
The trees are grwing taller and taller.
4、It had lng rts that culd hld the sil tgether.
本句中 that culd hld the sil tgether 是定语从句，关系代词 that 指代前文的 rts（物），在从句中作主语，用来修饰前面的名词。
例句：我喜欢有关自然的书籍。
I like the bks that are abut nature.
5、Wasn’t it difficult t plant s many bushes?
It is/was + 形容词 + t d sth.（此处为否定疑问句形式），it 作形式主语，真正的主语是后面的动词不定式 t d，表示 “做某事是…… 的”。
例句：学好英语很容易。
It is easy t learn English well.
6、We have planted many bushes and trees since then.
since then 意为 “从那以后”，是现在完成时的标志性时间状语。现在完成时结构：主语 + have/has + 动词过去分词，强调动作从过去开始，持续到现在。
例句：从那以后，他就一直住在这里。
He has lived here since then.
06 课堂小测
1. The hills used t __________ (be) cvered with sand, but nw they are green.2. With the gvernment's __________ (supprt), they built a new hspital in the twn.3. The rts f the bush can hld the sil __________ (gd) than thse f small grass.4. They have planted many trees since then, s there are __________ (few) sandstrms nw.5. It __________ (take) them half a day t reach the twn 20 years ag.
一、用括号中所给单词的适当形式填空。
二、用括号内动词的正确形式填空，完成句子。
We _____________ (plant) many trees since then.Peple are amazed _________ (see) the great changes here.The river is getting __________ (clean) and cleaner.There ______ (use) t be lts f sandstrms here.This is the bush _________ (have) lng rts t hld sil
have planted
三、按要求改写句子，每空限填一词。
1. I am amazed by its beauty.（改为一般疑问句）______ ______ amazed by its beauty?2. There used t be sandstrms here.（改为否定句）There _______ ______ t be sandstrms fields were getting smaller and smaller.（对画线部分提问）______ ______ the fields getting?4.It was difficult t plant bushes.（改为同义句）_________ bushes ______ have planted trees since then.（对画线部分提问）______ ______ yu planted trees?
The envirnment in my hmetwn has changed a lt. There (1) __________ be many (2) __________ every year. The (3) __________ was dry and sandy. The farmland (4) __________ made it hard fr peple t grw fd. T slve the prblem, the lcals planted (5) __________ and trees with the help f the (6) __________. It prvided strng (7) __________. They als built a new (8) __________ t cnnect the village t the city. Nw the village has becme a turist (9) __________ and sells lcal (10) __________ t visitrs.
sandstrm shrtage supprt attractin used t sil bush gvernment prduct highway
2. Whse birthday is it?
1. 基础层：抄写全部生词；跟读 1c、2c 听力音频 2 遍。2. 提高层：借助课堂思维导图，写一篇 60 词左右短文，介绍 李锐家乡的变化。3. 拓展层：思考 3 条改善环境的办法，仿照 2d 格式编写完整 英文对话。