初中英语人教版（2024）八年级下册（2024）Section A教学演示ppt课件

这是一份初中英语人教版（2024）八年级下册（2024）Section A教学演示ppt课件，共47页。PPT课件主要包含了Dead Sea，Nile River，Summary，Homework等内容，欢迎下载使用。
Lessn Objectives:
In this lessn, we will be able t:
1. Master new wrds and phrases and use them t talk abut natural wnders and the deep sea.2. Cmplete listening tasks abut wrld natural wnders and cean depths, and extract key infrmatin like measurements and descriptins.3. Practice listening fr key wrds via picture-matching and gap- filling tasks, and create extended dialgues abut natural wnders.4. Share knwledge abut amazing nature, express curisity abut the deep sea, and develp awareness f cean prtectin.
In this unit, yu will： 1. talk abut gegraphy facts abut natural wnders. 谈论有关自然奇观的地理事实。2. cmpare facts abut famus places. 比校有关著名景点的信息。3. share gegraphy facts using large numbers. 使用大数来分享地理事实。4. explre hw and why peple cnnect with nature. 探究人们与大自然建立联系的方式及原因。
/'wʌndə(r)/ n.奇观/v.想知道
Lk and share1. D yu knw the name f the waterfall in the pht?2. What d yu think is special abut it?
Yes, it's Victria Falls(维多利亚瀑布).
It's ne f the largest waterfalls in the wrld, with a wide curtain(幕)f water.
Hw d we cnnect with nature?
我们如何与大自然建立联系？
3. What ther natural wnders d yu knw?
Grand Canyn (USA)美国大峡谷
It is the largest canyn in the wrld — abut 446 kilmetres lng and up t 29 kilmetres wide.
Amazn Rainfrest (Suth America)亚马逊雨林
It is the largest trpical rainfrest n earth, cvering abut 5.5 millin square kilmetres.
Great Barrier Reef (Australia)澳大利亚大堡礁
It is the largest cral reef system in the wrld, stretching ver 2,300 kilmetres.
Nrthern Lights (Aurra Brealis) 北极光
They are the mst famus natural light shw n earth, caused by slar wind.
Pre-listening
___ Nile River ___ Angel Falls ___ Munt Qmlangma ___ Dead Sea ___ Sahara Desert ___ Mariana Trench
/'tʃəʊməʊ,lɑːŋmə/
/,mæri'ænə/
Angel Falls
安赫尔瀑布位于委内瑞拉玻利瓦尔州圭亚那高原的卡罗尼河支流丘伦河上，是世界落差最大瀑布 。丘伦河水从平顶高原奥扬特普伊山直流而下而形成瀑布，分为两级，总落差979米，以离丘伦河谷地172米的分结晶岩平台为界，其上为长的一级，高达807米。
Mariana Trench
马里亚纳海沟全长2550千米，为弧形，平均宽70千米。据估计这条海沟已形成6000万年。其最深处的地方达6~11千米，是已知的海洋最深处。2020年11月10日8时12分，中国“奋斗者”号载人潜水器在马里亚纳海沟成功坐底，坐底深度10909米。
死海是世界上最低的湖泊，也是地球上盐分居第三位的水体。截至2019年，死海表面积为605平方千米。 死海的湖岸是地球上已露出陆地的最低点，湖面海拔-430.5米。湖最深处380.29米，最深处湖床海拔-800.112米，有“世界的肚脐”之称。
Munt Qmlangma
珠穆朗玛峰简称珠峰，岩面高程8844.43米， 雪面高程8848.86米， 是喜马拉雅山脉中的主峰。由于亚欧板块和印度板块边缘的冲撞挤压，使喜马拉雅山地区猛烈抬升，据测算，平均每一万年大约升高20—30米，直至如今，喜马拉雅山区仍处在不断上升之中，每100年上升7厘米。
撒哈拉沙漠位于非洲大陆北部，是世界上最大的沙漠。它西起大西洋沿岸，向东经过埃及到达红海之滨，长5600千米，南北宽2000千米，总面积约932万平方千米，横跨北非诸多国家。其平均海拔300余米，主要由一条条平行排列的沙垄沙漠所组成。
尼罗河是一条流经非洲东部与北部的河流，与中非地区的刚果河以及西非地区的尼日尔河并列非洲最大的三个河流系统。全长6650千米，是世界上最长的河流，流域面积334.9万平方千米。 占据非洲大陆总面积超过1/9。河口区域年均流经的水量大约为810亿立方米。
While-listening
highest muntain
biggest desert
lwest place
deepest pint
n earth 在地球上
英语中，数字从后往前数，每三位标一个逗号。例如：
9, 000, 000
百位和十位中间加and小数点读作pint，小数点后的数字要单独读出。
416 8,848.86 11,000 9,000,000
fur hundred and sixteen
eight thusand eight hundred and frty-eight pint eight six
eleven thusand
nine millin
416 8,848.86 11,000 9,000,000
平方千米 拓展：square metres 平方米
in size 在尺寸上；在大小方面
belw sea level 低于海平面
Listen and check
Highlight the key infrmatin.
Hst: Welcme t ur game shw! Tday, it’s all abut gegraphy. Answer as quickly as yu can! Questin ne: What is the highest muntain in the wrld? Fu Xing: It’s Munt Qmlangma!Hst: Crrect! Hw high is it?Liu Hngyu: I knw this——it’s 8,848.43 metres high.Hst: N, srry. Fu Xing?Fu Xing: Is it 8,848.86 metres?Hst: Yes! But sme scientists say Qmlangma is still grwing taller! Nw, name the biggest desert in the wrld.Fu Xing: The Taklimakan Desert?
抓取关键信号词并锁定答案
Hst: Wrng! Ella? Ella: It’s the Sahara Desert. Hst: Right! Nw, hw big is it?Ella: It’s abut 9,000,000 square kilmetres.Hst: That’s right! What’s the lwest place n earth? Liu Hngyu: It’s the Dead Sea! Hst: Well dne! Its surface is 416 metres belw sea level. Nw where’s the deepest pint in the cean?Fu Xing: It’s in the Mariana Trench.Hst: That’s crrect! Hw deep is it? Fu Xing: It’s abut 11,000 metres deep.Hst: Crrect!
避免数据遗漏，一些数据可能来自于主持人
Pst-listening
A: What’s the lwest place n earth?B: It’s : Hw lw is it?B: Its surface is ... metres belw sea level.A: Nw, what’s ...
Useful expressins
It’s the __________.
What’s the lwest place n earth?
Hw lw is it?
Its surface is 416 metres ________ sea level.
Nw, what’s the _________ muntain in the wrld?
It’s Munt Qmlangma.
Hw high is it?
It’s 8,848.86 metres _______.
Language pints
教材 P31 单元标题
1. The Wnders f Nature 自然奇观 wnder n.奇观；惊叹 / v. 琢磨；想知道(相当于want t knw)；感到诧异 e.g. The Grand Canyn is ne f the natural wnders f the wrld. 罗拉多大峡谷是世界自然奇观之一。 If yu study physics, wnder why light travels faster than sund. 如果你学习物理，你会想知道为什么光比声音传播速度快。(2025湖北中考)练习：1）Qmlangma is ne f the mst amazing natural __________ (wnder) in the wrld. 2）我们想知道里海有多深。 We _________ hw deep the Caspian Sea is.
2. _____ metres high
物体长、宽、高、深等的表达法
基数词+单位词+形容词（lng、wide、high、deep等）
基数词+单位词+in+名词（length、width、height、depth等）
练习：The building is abut 200 metres high. （改为同义句） → The building is abut 200 metres ______ ________.
in height
3. 416 metres belw sea level 低于海平面416米
（1）【介词】在……下面 e.g. Please dn’t stand belw that bridge. 请不要站在那座桥下面。
（2）【介词】低于 e.g. It was three degrees belw zer this mrning. 今天早晨的温度是零下三度。
3. 416 metres belw sea level 低于海平面416米
（3）【副词】在下面；低于 不强调垂直的“下面 e.g. Frm the tp f the muntain, I culd see the village belw. 从山顶上我可以看到下面的村庄。
辨析：belw与under两者都表示“在……下面”。区别如下：
（1）【名词】高度 搭配：sea level 海平面 e.g. The muntain is ver 3,000 metres abve sea level. 这座山海拔3 000 多米。
（2）【名词】水平；程度 常与介词f连用。a high/lw level 高/低水平 e.g. As lng as we keep wrking, we will achieve higher levels. 只要我们继续努力，我们会达到更高的水平。(河北中考)
练习：The Dead Sea is the ________ (lw) place n the Earth, sitting 430 meters ________ sea level.
4. B: Its surface is… metres belw sea level. 它的表面低于海平面米。 surface n. 表面；表层 当指“水面”或“液面”时，常用单数形式。 e.g. Nearly 10% f the earth’s surface is cvered by ice. 地球表面将近10% 被冰覆盖。拓展：n the surface 表面上；从外表看；乍一看 e.g. On the surface, it seems t be my fault. 表面上看，这似乎是我的过错。练习：地震是地球表面的突然震动。 A(n) earthquake is a sudden shaking f the earth’s __________.
/taɪ'tænɪk/
/səb'mɜːsəbl/ n. 潜水艇
deep-sea adj. 深海的
1. Peple still dn’t knw much abut the __________.2. In __________, China’s Fenduzhe dived int the deep sea and filmed it.3. Sme animals have unusual abilities. Sme are __________ but can “see”. Sme can even create their wn __________.4. There is rubbish even at __________ metres deep.
dive int 潜入
深海相关的名词(短语)
视觉相关的名词(短语)
1. Peple still dn’t knw much abut the ____________.2. In __________, China’s Fenduzhe dived int the deep sea and filmed it.3. Sme animals have unusual abilities. Sme are __________ but can “see”. Sme can even create their wn __________.4. There is rubbish even at __________ metres deep.
Tip:单词（短语）/数字过长时可先简写速记，后续补充完整
Listening tasks
Listen and fill. Then fllw and check.
Ms Ga: Thank yu fr the wnderful talk, Mr Jnes. Nw, des anyne have any questins? Emma: I d! Why are s many cuntries ____________ the deep sea?Mr Jnes:Well, curisity is ne reasn. We dn’t knw enugh abut the cean flr.Fu Xing: I remember that in 2020, China’s Fenduzhe _______ deeper ______ the Mariana Trench than many ther submersibles in the wrld and filmed it. But I didn’t see any deep-sea animals. What are they like?Mr Jnes: Well, many deep-sea animals are large and _________. Sme animals are blind, but they can “see” as well as thers. Sme even create their wn light!Peter: Cl! Are there any ther surprising facts abut the deep sea?Mr Jnes: Did yu knw that there’s rubbish even at 11,000 metres deep? That _________ many peple. Ms Ga: That’s terrible! We shuld d smething abut it. Mr Jnes: Yu’re right!
researching
dived int
What is the largest shark in the deep sea?What is the bttm f the deep sea like?Why is it imprtant t research the deep sea?
the bttm f... 的底部
What is the largest shark in the deep sea?
It’s the whale shark.
What is the bttm f the deep sea like?
It’s dark, freezing, and has high pressure.There are als many unique creatures.
Why is it imprtant t research the deep sea?
Because the deep sea has unique species fr research, hlds imprtant resurces, and can help cntrl ur climate.
The temperature in mst deep-sea areas is abut -1℃-4℃, and gradually decreases with increasing depth.
What is the temperature in the deep sea?
What can we d t prtect the deep sea in daily life?
We can reduce plastic use, save water, supprt sustainable seafd, and spread awareness f cean prtectin.
5. OCEAN DEPTHS depth n.深（度）；纵深 形容词形式：deep 深的；有……深的e.g. We fund water at a depth f 20 metres. 我们在20 米深处找到了水。拓展：询问某物的深度时，常用句型“What’s ne’s depth?” 或“What’s the depth ”，相当于“Hw deep ”。e.g. What’s the depth f the lake here? = ______ _______ is the lake here? 这儿的湖水有多深？
Hw deep
6. A whale can dive t ver 2,000 metres. 鲸鱼可以下潜至2000多米。 dive v./n. 潜水；跳水；俯冲 过去式：dived/dve, 过去分词：dived
（1）【动词】潜水；跳水；俯冲 dive dwn 潜入; 俯冲 dive int 跳入 e.g. The whale dve t deeper water. 那头鲸潜入了更深的水城。 The falcn dived dwn and caught the little bird. 猎鹰俯冲下来抓住了那只小鸟The man dived int the river t save the drwning child. 那个男人跳入河中去救溺水的小孩。
（2）【名词】潜水；跳水；俯冲 e.g. He made a beautifual dive. 他做了个漂亮的跳水动作。
练习：She dived ________ a swimming pl and swam fr a whle day.
7. Sme animals have unusual abilities. 有些动物拥有非凡的能力。 unusual adj. 特别的；不寻常的 由“un-（否定前缀）+ usual (adj.通常的）”构成。 unusual的发音以元音音素开头，其前有不定冠词时，用an。e.g. Tan Dun is an unusual man with great musical talent. 谭盾是一个与众不同的人，他有着非凡的音乐天赋。(南通中考改编) It's unusual fr the trees t flwer s early. 这种树这么早开花很少见。拓展：
usual adj.通常的；寻常的
（反义词）unusual adj. 特别的；不寻常的；罕见的
usually adv. 通常地；一般地
unusually adv. 不寻常地
8. What is the bttm f the deep sea like? 深海底部是什么样子的？ bttm n.底部；最下部 反义词：tp 顶部；顶端 (at) the bttm f（在）……的底部 frm tp t bttm 从上到下；彻底地 frm the bttm f ne's heart 由衷地，从心底里e.g. What is there at the bttm f the deep sea? 深海底部有什么？ They cleaned the huse frm tp t bttm befre the Spring Festival. 春节前，他们把房子彻底打扫了一遍。练习：我在河底发现了一些奇怪的东西。 I fund smething strange ___________________ the river.
at the bttm f
1. The diver went b_________ the bat t check the rpes under the water.2. The tables' s_________ were very clean.3. The water l_________ in the pl rse after the heavy rain.4. Sally ___________ /rɪ'sɜːtʃ/ many bks befre she wrte her reprt.5. They fund a strange stne at the _________ /'bɒtəm/ f the lake.
I. 请根据所给的首字母或音标写出单词。
II. 用括号中所给单词的适当形式填空。
1. The __________ (deep) f the lake is hard t measure.2. It is __________ (usual) t see snw in China in the summer.3. This hill is the __________ (lw) ne in ur neighburhd. It is nly 1 metre high.4. Children have many different __________ (ability ) t learn new things.5. The cach ____________ (dive) int the pl t shw us hw t d it crrectly yesterday.
III. 根据汉语提示完成句子（每空一词）。
1. 在地球上，笑容是最美的语言。 A smile is the mst beautiful language ________ ________.2. 桂林的漓江是中国著名的自然奇观之一。 The Li River in Guilin is ne f the famus __________ __________ in China.3. 昨天他们在城市附近的海中看到一艘大型的中国船只。 They saw a large __________ ________ in the sea near the city yesterday.4. 这个小岛只有五平方千米。 The small island is nly five __________ ___________.
n earth
natural wnders
Chinese vessel
square kilmeters
We learn:1. Vcabulary: wnder, desert, measurement, square kilmetre, belw, level, sea level, surface, depth, dive, submersible, unusual, Sentence Patterns: "What's the ... in the wrld? / It's ... / It's ... metres high/deep/belw sea level."3. Listening Skill: Extract key infrmatin (descriptins, measurements) frm listening materials abut natural wnders.We can: talk abut amazing natural wnders and the deep sea with new wrds and phrases, and express ideas abut cean prtectin.
1. 基础层：背诵今天学的12个生词+短语；背诵1d的2组对话。2. 提高层：用所学句型写5句话，比较两个自然奇观（如珠峰 vs 马里亚纳海沟）,要包含测量数据。3. 拓展层：设计一张海报：“Save the Deep Sea”（拯救深海）。 要求包含3个事实和1句口号，至少使用5个本节课的生词。