人教版（2024）八年级下册（2024）Unit 4 The Wonders of NatureSection B图文ppt课件

这是一份人教版（2024）八年级下册（2024）Unit 4 The Wonders of NatureSection B图文ppt课件，共48页。PPT课件主要包含了 Warm up， Lead in，as as，温馨提示，不规则变化，较大数字的表达与读法， Summary，Must-do等内容，欢迎下载使用。
Learning Objectives
05 Prductin
03 Presentatin
07 Exercise
04 Practice
Warm up:形容词炸弹
学生挨个进行形容词接龙，若说到的词和老师事先准备的词一样，则被“炸到”
Listen and fill the chat.
Oh h Grass gets ___________Days gets ___________Sun gets ______________________ and ___________Dreams gets ___________Smiles gets ___________Lve gets ______________________ and ___________
the Yangtze River (6300km)
the Yellw River (5464km)
the Nile River (6670km)
The Yangtze River is lnger than the Yellw River.The Nile River is lnger than the Yangtze River.The Nile River is the lngest.
the Sahara Desert (906 km²)
the Taklamakan Desert (33 km²)
the Arabian Desert (233 km²)
The Sahara Desert is larger than the Taklamakan Desert.The Arabian Desert is larger than the Sahara Desert.The Arabian Desert is the largest.
03 Presentatin
Read the sentences. Circle the adjectives which cmpare things. Underline the adverbs which cmpare actins..
语法关卡一: 形容词/副词三个等级
最高级：largest
原级：形容词本来的样子，不比较比较级：比较两个事物，“A比B更...”最高级：三个或多个事物对比，“最...”
语法关卡二：形容词/副词原级用法
基本结构： A+be+as+原级+as+B “ A和B一样”eg: He is as tall as me.否定结构： A+be+nt s/as+原级+as+B “ A和B不一样”
语法关卡三：形容词/副词比较级用法
主语+be动词+adj.比较级+than +比较对象eg: She is mre utging than me. Her shes is bigger than mine.主语+实义动词+adv.比较级+than +比较对象eg: He studies harder than his classmates.
语法小技巧：than 前比较级，than后用宾格注意：形物代+名词作主语时，than 后对象要统一。
eg: The higher yu climb, the faster yu will see.
② the + 比较级..., the + 比较级... “越...,就越...”
eg: The weather is getting clder and clder.
③ 比较级 + and + 比较级 “越来越... ”
eg: Tm is the taller f the tw.
④ the + 比较级 + f the tw “两者中比较...的”
eg: Which is mre delicius, pizza r hamburger? Wh is taller, Tm r Jack?
⑤ Which /Wh ...+比较级， A r B? “A和B哪个/谁更...”
⑥ 比较级+than any ther +可数名词单数 = 比较级+than the ther + 可数名词复数 “比其他任何/所有...都... ”
eg: Shanghai is bigger than any ther city in China. This bk is mre ppular than the ther bks in the library.
可修饰比较级的词：两多：___________________________两少：___________________________一甚至：___________________________一远去：___________________________
He is much mre serius than his sister. She runs a lt faster than me.
a little; a bit
两多两少一甚至，还有一个远去了
① 主语+ be + the + adj.最高级+ in/ f/ amng 短语 “...是...中最...的”eg: The Yangtze River is the lngest river in China.② 主语+ 实义动词 (+ the)+adv.最高级+ in/ f/ amng 短语 “在...中最...的”eg: He runs (the) faster in ur class.
语法关卡四： 形容词/副词最高级用法
③ 主语+ be + ne f the + adj.最高级+ 可数名词复数 + in/f 短语 “...是...中最...的之一”eg: China is ne f the ldest cuntries in the wld.④ 主语+ be + the + 序数词 +adj.最高级+ 可数名词单数+in/ f 短语 “...在...中是第几的...”eg: The Nile is the lngest river in the wrld.
⑤ 疑问词+ be + the + adj.最高级，A、B r C ? eg:Wh is the mst utging, Lisa、Jack r Mike?⑥ 疑问词+ 助动词 + 主语+动词原形 （+ the） + adv.最高级，A、B r C ? eg: Which subject d yu like best, English、maths r Chinese?
使用最高级时，前一般要加the;但当最高级前有物主代词、指示代词、名词所有格等修饰时，则不加the.
Can yu change?
以 big-bigger-biggest形式进行快速抢答
语法关卡五：形容词/副词比较级与最高级变化规则
② +r/st (哑e结尾)
③ 变y为i+er/est (以辅+y结尾)
④ 双写尾字母+er/est (以重读闭音节词尾只有一个辅音字母时)
③ 词前＋mre/mst (所有多音节和部分双音节词)
记忆口诀：两多两好三不好；一老一远加一少
Cmplete the passage with the crrect frms f the wrds in the bx.
large 　amazing　 far　 clse 　lud
My friends and I visited Victria Falls in Africa last year. Visiting ne f the wrld’s ________ waterfalls was a magical experience. As we went ________ t the falls, the nise f the water slwly grew ________ and luder. Then, right befre ur eyes, the waterfall appeared. It went n fr as ________ as the eye culd see. Later, we sat in a special pl at the tp f the falls. There, we felt the water rush past us and becme a part f the waterfall. It was the scariest but als the __________ experience f ur trip!
mst amazing
Watch the vide and check yur answers.
1.Munt Kilimanjar is __________ (five thusand, eight hundred and ninety-five) metres (twenty-five thusand, seven hundred and sixty-eight) cubic metres f water purs dwn Inga Falls each East African Rift Valley is abut 4,000 (_____________) miles Taklimakan Desert has a ttal area f abut 337,000 (____________________________________) square kilmetres.
Write r spell ut the numbers.
1, 034, 507, 890. 12
1,从数字的右端向左数，每三位数加一个逗号。
2,从右到左第一个逗号，读作thusand；第二个逗号，读作millin第三个逗号，读作billin.英语中没有万和十万的表达一万：ten thusand十万：ne hundred thusand
3, 通常在hundred后加and,若百位数为0，则在thusand后加and
4,小数点后面的数字一个一个读
长、宽、高、深、面积的表达方式
基数词+单位词+形容词（lng,wide,high,deep等）eg: The river is 20 meters wide.
基数词+单位词+in+名词（length, width, height,depth, size等）eg:The river is 20 meters in width.
拓展：作定语时，用合成词“ 数词-单位词单数-形容词 ”eg: This 20-meter-lng rpe isn`t enugh t help climb the muntain.
three hundred and thirty-seven thusand
fur thusand
Write sme questins t cmpare places. Then ask a partner yur questins.
•What is the highest •Which park is bigger, ... r
Let`s watch!
Nwadays, city walk is a super ppular way t explre a city. Tday, yu are city tur guides! Yu need t design the best city walk rute fr ur class!
每队根据任务卡上提供的信息,进行问答对话练习,并设计一份City Walk 路线
每组派1位推荐官上台,对本组做的北京City Walk路线做汇报
北京 City Walk
形容词和副词的比较级与最高级
1. 比较级+than2. the + 比较级, the + 比较级3. 比较级 + and + 比较级4. the + 比较级 + f the tw5. Which /Wh ...+比较级， A r B? 6.比较级+than any/the ther +名词
1. (the +) 最高级 + in/f/amng短语2. ne f the + 形容词最高级 + 可数名词复数 + in/f短语3. “Which/Wh...(+the)+最高级, A, B r C?”4. the + 序数词 + 形容词最高级 + 可数名词单数 + in/f短语
用所给词的适当形式填空。
1. The Yellw River is the secnd _______ (lng) river in China.2. The glass bridge is _______ (lng) than any ther ne in China.3. Wh is ______________(utging), Tm r Jerry?4. She studies ______________(carefully) than any ther student in Grade 8.5. ---- Hw are yu feeling tday? ----Much _______(well), thank yu.6. It`s ne f _________________(ppular) sngs this year.7. The mre we talk, the _______(clse) ur friendship will be.8. The students read the instructins as ________(careful) as they culd t avid mistakes.
mre carefully
the mst ppular
1. AI technlgy in China has develped ______ than anyne expected. A. fast B. faster C. the faster D. fastest2. Qipa is ne f _____ trditinal clthes in China, lved by peple at hme and abrad. A. famus B. mre famus C. mst famus D. the mst famus3. Amng all the subjects, I think math is ____ ne. I always get gd grades in it. A. easy B. easier C. easiest D. the easiest
4. T keep healthy, we shuld eat _____ fast fd and d _____ exercise. A. less;mre B. fewer;mre C. mre;less D. fewer;less5. ----“Fd safety” prblem is becming _____ these days. ----I think s. The gvement must d smething t deal with it. A. smaller and smaller B. better and better C.nicer and nicer D. wrse and wrse
6. Fr me, the West Lake is _____ than any ther lake in Hangzhu. Its clear water and willw trees make it wnderful place t visit. A. less attractive B. mre attractive C. the mst attractive D. attractive
题目：My Favrite Place in China要求：• 介绍一个你最喜欢的中国景点（如黄山、西湖、长城等）• 至少使用3个形容词/副词的比较级或最高级• 参考句型： ne f the mst... in China. / It is mre... than any ther... / The... yu visit, the... yu will feel.
录制1分钟语音用英语介绍你最喜欢的动物/运动/科目，至少使用3个比较级/最高级，例如：My favrite animal is the panda. It is ne f the cutest animals in the wrld. It is mre lvely than many ther animals.
1. 制作一张A4海报，主题为 My Family's Superlatives2. 至少包含5个最高级句子，3个比较级句子，例如：◦ My dad is the tallest in my family.◦ My mm cks mre deliciusly than my dad.◦ My little sister is the cutest member f ur family.3. 搭配家庭照片/手绘插图，下节课展示分享亲子互动：让孩子采访家人，用英语完成海报，家长帮忙纠正语法考句型： ne f the mst... in China. / It is mre... than any ther... / The... yu visit, the... yu will feel.
01 【家庭之最】英语海报