人教版（2024）八年级下册（2024）Section A课前预习课件ppt

这是一份人教版（2024）八年级下册（2024）Section A课前预习课件ppt，共34页。PPT课件主要包含了新课引入，新课讲解，blind，light，归纳小结，强化训练，单词拼写，unusual，research，wonders等内容，欢迎下载使用。
D yu knw the name f the waterfall in the pht?
Victria Falls.
What d yu think is special abut it?
Huge scale: It is ne f the wrld’s three largest waterfalls, with a main width f abut 1,700 meters and a drp f ver 100 meters.Diverse landscapes: It includes multiple sectins (such as the Main Falls and Rainbw Falls). Wrld Heritage status: It was listed as a Wrld Natural Heritage Site in 1989, cmbining eclgical value and visual shck.
D yu knw ther wnders f nature?
Language pints
1. The Wnders f Nature 自然奇观wnder 作名词，意为“奇迹；奇观；惊奇”。The Great Wall is ne f the wnders f the wrld. 长城是世界奇观之一。wnder 的相关短语：(1) in wnder惊奇地The children lked at the firewrks in wnder. 孩子们惊奇地看着烟花。
(2) n wnder 难怪；不足为奇N wnder yu’re tired, yu’ve been wrking all day. 难怪你累了，你一整天都在工作。【拓展】wnder 还可作动词，意为“想知道”。I wnder wh he is. 我想知道他是谁。
Match the places with the pictures.
_____ Nile River _____ Angel Falls _____ Munt Qmlangma_____ Dead Sea _____ Sahara Desert _____ Mariana Trench
Listen t the game shw. Cmplete the descriptins f the places.
highest muntain
biggest desert
lwest place
deepest pint
Listen again. Cmplete the measurements in 1b with the numbers belw.
基数词+单位词+形容词“描述事物的度量特征”
基数词+单位词+in+名词“在某范围 / 类别内的具体度量”
416 8,848.86 11,000 9,000,000
2. ... belw sea level ……海平面以下belw 作介词，意为“在……下面；低于；少于”。There is a beautiful garden belw ur windw. 在我们窗户下面有一个漂亮的花园。The sun sank belw the hrizn. 太阳落到了地平线以下。His scre n the test was belw 60. 他这次考试的分数低于60分。
【拓展】belw 还可作副词，意为“在(或到)下面” 。Lk at the picture belw. 看下面的图片。【辨析】belw与under
There are sme flwers belw the balcny. 阳台下面有一些花。The ball is under the table. 球在桌子的下方。The little girl hid under the blanket. 小女孩藏在了毯子下面。
3. abut 11.000 metres deep 深约11000米 关于长、宽、高、深的表达：(1) 基数词+单位词+形容词 (lng, wide, tall, high, deep等)10 metres lng 10米长15 meters wide 15米宽200 metres deep 200米深
(2) 基数词+单位词+in+名词 (length width, height, depth 等)10 metres in length 10米长15 meters in width 15米宽200 metres in depth 200米深
(3) 对长、宽、高等提问用疑问词hw。Hw lng/high/wide ……多长/高/宽？Hw wide is this river? 这条河有多宽？Hw lng is the Great Wall f China? 中国的长城有多长？
Listen t the script and check yur answers.
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?
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!
Talk abut the places yu have learnt abut.
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 ...
What d yu knw abut the deep sea? Cmplete the sentences with the infrmatin frm the picture.
1. Fenduzhe reached _______.2. The deep sea begins at _______.3. The Titanic rests at _______.4. A whale can dive t _______.
A class is asking a deep-sea researcher sme questins after his talk. Listen and tick the tpics they discuss.
where the deep sea beginswhy peple are researching the deep seawhich Chinese submersible dived deeper in the water than many therswhat deep-sea animals are likehw everyne shuld prtect the deep sea
4. why peple are researching the deep sea 人们研究深海的原因research 的用法：(1) 作名词①不可数名词，意为“研究；调查；探索”。We shuld d sme research n the histry f the lcal area. 我们应该对当地的历史做些研究。
②可数名词，意为“研究项目；研究工作”。A new research shws that exercise can imprve ur memry. 一项新的研究表明运动可以提高我们的记忆力。
(2) 作动词，意为“研究；调查”。He is researching the effects f pllutin n plants. 他正在研究污染对植物的影响。They are researching int/n the new energy surces. 他们正在对新能源进行研究。
Ms Ga: Thank yu fr the wnderful talk, Mr Jnes. Nw, des anyne have any questins?Emma: I d! Why are s many cuntries researching 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 dived deeper int 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 unusual. 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 shcked many peple.Ms Ga: That’s terrible! We shuld d smething abut it.Mr Jnes: Yu’re right!
Listen again. Cmplete the sentences with the facts frm the cnversatin.
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.
5. Sme animals have unusual abilities. 有些动物拥有特殊能力。unusual由 un-(表示否定)和 usual 构成，意为 “不寻常的；特别的”She has an unusual talent fr painting. 她在绘画方面有独特的天赋。It’s unusual fr him t be late. 对他来说迟到是很不寻常的。
Read the questins and think f mre yu wuld like t ask the deep-sea researcher. Research the answers. Then ask and answer the questins with a partner.
● What is the largest shark in the deep sea?● What is the bttm f the deep sea like?
The Greenland shark is the largest shark in the deep sea. It can grw very big and live fr a lng time.
The bttm f the deep sea is dark, cld and quiet. There is sft sand, hard rcks, seamunts and hydrthermal vents (ht water hles) n it.
● Why is it imprtant t research the deep sea?
It’s imprtant because we can find new sea animals, learn abut the rigin f the Earth, discver useful natural resurces (like il and gas) and prtect the whle cean envirnment.
6. What is the bttm f the deep sea like? 深海底部是什么样子的？bttm作名词，意为“底部；最下面”。常和介词“at” “n” “in”等搭配。There are sme rcks at the bttm f the sea. 在海底有一些岩石。Lk at the wrds n the bttm f the page. 看这页底部的单词。Our huse is at the bttm f the hill. 我们的房子在山脚下。
【拓展】bttm还可作形容词，意为“底部的；最后的”。Please put it in the bttm drawer. 请把它放在最下面的抽屉里。
Mre questins yu wuld like t ask the deep-sea researcher.
Hw d deep-sea animals live withut sunlight?Is it cld in the deep sea?Are there plants in the deep sea?Hw d researchers study deep-sea animals safely?...
1. New wrds and phrases:wnder, desert, measurement, square kilmetre, belw, level, sea level, surface, depth, dive, submersible, unusual, bttm
2. Target language:—What’s the lwest place n earth?—It’s ...
1. Tday is an __________ (usual) day fr Jack. It’s his twentieth birthday.2. We need t d sme __________ (research) t find ut the answer.3. The Great Wall is ne f the __________ (wnder) f the wrld.4. Hlding his breath fr abut three minutes, Jerald swam dwn t a __________ (deep) f 112 metres.
1. 这个公园真的是个自然奇观。The park is really a ________ ________.2. 这条河大约5米深。This river is abut ________ ________ ________.3. 科学家在湖的底部发现了一些奇怪的生物。The scientists fund sme strange living things ________ ________ ________ ________ the lake.
natural wnder
5 metres deep
at the
bttm f