初中英语Section A多媒体教学课件ppt

这是一份初中英语Section A多媒体教学课件ppt，共31页。PPT课件主要包含了Lead in，Practice，Production，较大数字的表达与读法，thousand，million，billion，Summary，Exercise，the most 等内容，欢迎下载使用。
Let’s enjy sme natural wnders f the wrld.
形容词与副词的比较级和最高级
Read the sentences. Circle the adjectives which cmpare things. Underline the adverbs which cmpare actins..
the Yangtze River长江 6300 km
the Amazn River亚马逊河6440 km
the Nile尼罗河6670 km
The Amazn River is lnger than the Yangtze River.The Nile is lnger than the Amazn River.The Nile is the lngest f all.
Presentatin
1.比较级和最高级的基本概念
概念：用来修饰名词的形容词或者修饰动词的副词，会因为修饰程度不同而有所“比较”，可分为原级，比较级（更）与最高级（最）。
2.比较级和最高级的构成
1. 一般在词尾加-er，-est。
2. 以不发音的e结尾加-r，-st。
3. 以重读闭音节结尾， 双写尾字母，再加-er，-est。
4. 以辅音字母加y结尾的， 变y为i再加-er，-est。
5.多音节和部分双音节词， 词前加 mre， mst。
ldest/eldest
farther/further
farthest/furthest
1.big __________ _________ 2. high __________ __________3. lw __________ __________ 4. deep __________ __________5. easy __________ __________ 6. far __________ __________7. happy __________ _______ 8. lud __________ __________9. great __________ __________ 10. clse __________ __________11. amazing_______________ ________________ 12. interesting______________ ________________13. well __________ __________ 14. little __________ __________
写出下列单词的比较级和最高级
bigger
biggest
higher
highest
lwer
lwest
deeper
deepest
easier
easiest
farther
farthest
happier
happiest
luder
ludest
greater
greatest
clser
clsest
mre amazing
mst amazing
mre interesting
mst interesting
better
best
less
least
形容词或副词的比较级+than The Changjiang River is lnger than it.长江比它长。 Bill runs faster than any ther by in his class.比尔跑得比班上其他任何男孩都快。
“比较级+and+比较级(单音节词和部分双音节词)”或“mre and mre+原级(多音节词和部分双音节词)”表示“越来越……”。 Summer is cming. It's getting htter and htter.夏天就要来了。天越来越热了。
“the +比较级...，the+比较级..”表示“越……,就越……”。 The mre yu read, the mre yu knw.你阅读得越多,知道的就越多。
the + 比较级 + f the tw (+ 名词复数) 表示“两者中较……的那个”。 Mike is the taller f the tw bys. 迈克是两个男孩中较高的那个。
Which/Wh... + 比较级, A r B? 表示“ A和B哪个/谁更……？” Which city is larger, Beijing r Shanghai? 北京和上海，哪个城市更大？
A + be + 倍数 + 形容词比较级 + than + B 表示“A是B的……倍……”。 Our schl is three times bigger than yurs. 我们学校是你们学校的三倍大。
(the+)最高级(+名词)+in/f 短语， 意为“……中最……的”。 I think spring is the best time f a year. 我认为春天是一年中最好的时节。 Tm wrks (the) hardest in Class3. 在三班汤姆学习最努力。。
ne f the +形容词最高级+可数名词复数+in/f 短语，意为“……中最……的……之一”。 Hangzhu is ne f the mst beautiful cities in the wrld. 杭州是世界上最美的城市之一。
the +序数词+形容词最高级+可数名词单数+in/f 短语, 意为“在…中是第几……的……” As we all knw, the Yellw River is the secnd lngest river in China. 众所周知,黄河是中国第二长河。
“Which/Wh...(the+)最高级，A,B r C?” 意为“哪个/谁是最,A,B还是C？”。 Wh sings best in yur class, Lily, Tm r Jack? 你们班谁唱得最好，莉莉，汤姆还是杰克？
用所给词的适当形式填空
1.The Yellw River is _________ (lng) than the Huaihe Tai is the _________ (high) f the tw muntains in sea is getting mre and mre _________ (beautiful) with envirnmental lake is the _________ (deep) in ur is _________ (lng), the Amazn River r the Nile River?6.This river is three metres __________ (wide) than that ne. 7.Hainan Island is the secnd __________(large) island in China. 8.The sunset ver the cean is ne f the _______________ (amazing) sceneries in the wrld.
mst amazing
1.—Which is ______ natural wnder in the wrld, the Grand Canyn, the Sahara Desert r the Great Barrier Reef? —I think the Grand Canyn is. A. great B. greater C. the greatest D. mre great2.The Yangtze River is ne f ______ rivers in the wrld. A. lng B. lnger C. the lngest D. mst lng3.The frest is becming ______ because mre trees are planted every year. A. greener and greener B. green and green C. mre and mre green D. greenest4.This waterfall is ______ f the three in this area. A. the mst beautiful B. mre beautiful C. beautifuler D. beautifulest
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!
Write sme questins t cmpare places. Then ask a partner yur questins.
•What is the highest •Which park is bigger, ... r •Is ... lnger than
Yu can ask fr help:
9，365,278,689
2,674 → ______________________________________________164,213,430 → ________________________________________ _________________________________________18,357,089 → _________________________________________ __________________________________________twenty-eight thusand, six hundred and fifty-six ___________frty millin, fur hundred and twenty-fur thusand _______
tw thusand six hundred and seventy-fur
ne hundred and sixty-fur millin, tw hundred and thirteen thusand, fur hundred and thirty
eighteen millin, three hundred and fifty-seven thusand, and eighty-nine
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.
/ˈkjuːbɪk/ adj. 立方的
/maɪl/ n. 英里
three hundred and thirty-seven thusand
fur thusand
Sum up what yu have learned.
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mre and mre + 形容词/副词原级
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
Language Pints
It went n fr as far as the eye culd see.它一眼望不到头。（教材P35 4c）
as far as... 远至（某处）
（2024·四川遂宁·中考真题）Everything is pssible ________ yu wrk hard.A. as much as B. as sn as C. as lng as D. as far as
拓展：as far as... 就……的限度，到……的程度相关短语&例句as far as I/we knw 据我/我们所知as/s far as I can see 依我看1. As far as we knw, the Sahara is the biggest desert in the wrld. 据我们所知，撒哈拉沙漠是世界上最大的沙漠。2.As far as I can see, there is n difference between the tw cmputers. 依我看，这两台电脑没有差别。
用所给词的适当形式填空。
1.(2025·扬州中考) The internatinal influence f Yangzhu is getting ________ than befre. (strng)2.(2025·德阳中考改编) Lin Ta runs ________(fast) than his classmates. He is the running star in his class.3.(2025·达州中考) The Yangtze River is the ________(lng) river in China.4.(2025·白银中考) The mre we cmmunicate with ur parents, the _______(gd) we'll understand each ther.5.(2025·成都中考改编) Miss Li always has a lt f wrk t d. Fr her, nthing is _______________(imprtant) than a prper plan.6.(宁波中考改编) Fr mst f the students, June is always the ________(busy) mnth in a Xuesen, father f China's space prgram, is ne f the ________(great) scientists in the wrld.
mre imprtant
1.The Natinal Library f China is ______ public library in Asia.A. large B. larger C. largest D. the largest2. In a DIY club, the mre we practice, ______ we becme.A. the wrse B. the wrst C. the better D. the best3. Jurney t the West is ne f ______ classic nvels in China. Peple like reading it.A. famus B. mre famus C. the mre famus D. the mst famus4. It is said that smart technlgy is making peple ______ than befre and ding them harm.A. lazy B. lazier C. laziest D. the laziest
1. 赛龙舟是端午节最热闹的一项活动。它展示了人与人之间团结合作的精神。The Dragn Bat Race is ______ ______lively activity f the Dragn Bat Festival. It shws the spirit f unity and cperatin amng peple.2. 我们应该学会正确使用人工智能，让我们的生活越来越好。We shuld learn hw t use AI prperly t make ur lives _____ ____ ____.
better and better