人教版（2024）八年级下册（2024）Section A课文ppt课件

这是一份人教版（2024）八年级下册（2024）Section A课文ppt课件，共34页。
Language pints
1. 数字的读法6,300 → six thusand three hundred5,464 → five thusand fur hundred and sixty-fur6,671 → six thusand six hundred and seventy-ne
三位一组划分,从右往左，每三位用逗号隔开：6,300 → 6 thusand, 3005,464 → 5 thusand, 46412,345 → 12 thusand, 345
百位与十位 / 个位之间英式英语：加 and，如 5,464 → five thusand fur hundred and sixty-fur美式英语：可省略 and，如 five thusand fur hundred sixty-fur
3. 形容词最高级（Superlatives）the lngest river（最长的河流）the secnd lngest（第二长的）the farthest（最远的）用法：三者及以上比较时，用 the + 形容词最高级；序数词 + 最高级表示 “第几最……”。
2. 数字与长度表达abut 6,300 kilmetres lng（约 6300 千米长）5,464 kilmetres lng（5464 千米长）结构：数字 + 单位 + lng / wide / tall 等。
用单词的适当形式填空。
1. The main purpse f his hliday t Greece was t g ________ (dive).2. Our schl library is the ________ (large) ne in the district, with a lt f different kinds f bks.3. The ________(deep) f the swimming pl is tw metres, s yu need t be careful.4. The Dead Sea is the ________ (lw) place n earth.5. The natinal park cvers an area f 500 ________ (square) kilmeters.6. Munt Qmlangma is still grwing _______ (tall).7. Many deep-sea animals are __________ (clr) and strange.
Here’s a vide t help us knw mre abut the Yangtze River.
Here’s a vide t help us knw mre abut the Nile.
10,909 metres
3,800 metres
ver 2,000 metres
/səbˈmɜːsəbl/潜水艇
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 much 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!
What is the largest shark in the deep sea?
深海中最大的鲨鱼是鲸鲨（Rhincdn typus），它也是现存世界上最大的鱼类，最大个体体长可达 18.8 米，体重超 30 吨。
The bttm f the deep sea is very dark and cld. There are lts f strange-lking rcks, muntains in sme places, and a lt f sft mud. There are als sme special creatures.
First, it helps us understand Earth’s histry because many deep-sea rcks and sediments hld clues abut past climates.首先，研究深海能帮我们了解地球的历史，因为许多深海岩石和沉积物中，都藏着能揭示过去气候的线索。
Secnd, deep-sea creatures have special abilities. Fr example, they can make light by themselves, and they have special enzymes that wrk under high pressure. These can help medicine and technlgy.深海生物有特殊的适应能力，比如会生物发光，还有能在高压环境下工作的酶，这些都能帮到医药和科技领域。
Mst imprtantly, the deep sea helps cntrl the glbal climate by taking in carbn dixide.
最重要的是，深海能吸收二氧化碳，在调节全球气候方面发挥着关键作用。
A: What is the largest shark in the deep sea?B: I think it’s the whale shark.A: D yu knw hw large it is?B: It can grw up t abut 10 t 20 metres in length.A: What is the bttm f the deep sea like?B: It is dark, freezing, and has high pressure. There are als many unique creatures.A: Why is it imprtant t research the deep sea?B: Because the deep sea has unique species fr research, hlds imprtant resurces, and can help cntrl ur climate.
Hw shuld everyne prtect the deep sea?
The deep sea is hme t cuntless amazing creatures.
Hw much d yu knw abut rivers?Let’s have a quiz!Guess the river!
I am called the “Mther River” f China.My water is yellw. Wh am I?
I am the lngest river in China. I flw thrugh many big cities. Wh am I?
I am the lngest river in Africa. I helped build the pyramids. Wh am I?
Discuss and share yur ideas.
Rivers are the Lifelines f Civilizatins.
Hw much d yu knw abut these three great rivers?
Which rivers are in China?Which is in Africa?
Can yu fill in the River Infrmatin Wrksheet ?
1. What is the cnversatin mainly abut?
Great rivers
2.Hw many rivers are mentined in the cnversatin? What are they?
Three. They are the Yellw River, the Yangtze River, and the Nile River.
3.Des Ella knw much abut Chinese rivers at the beginning? Hw d yu knw?
N, she desn't.She thught the Yellw River might be the lngest.
Skim reading
1. What are the lengths f the three rivers? Fill in the table.
abut 6,300 km
Detail reading
2.Why is the Yellw River called the "Yellw River"? Find the exact sentence in the cnversatin.
3.What d the Yellw River and the Nile River have in cmmn accrding t Ella and Yaming?
4.At the end f the cnversatin, Ella says: "We shuld prtect them at all csts." Why des she say this?
She says this because rivers are imprtant fr civilizatins, histry, and daily life, and they may face danger like pllutin.
Further thinking
Yaming says the Yellw River is called the "mther river" f China. Why d yu think peple call a river "mther"? What des this tell us abut the relatinship between peple and rivers?
A river is called "mther" because it gives life t the peple alng it, just like a mther gives life t her children. It tells us that rivers are nt just water – they are part f ur identity and histry.
3b What d Yaming and Ella knw abut these rivers? Read the cnversatin again and cmplete the table.
civilizatins
Pay attentin t the expressins.
3c Cmplete the fllwing chart. Then rle-play it.
ancient civilizatins
"Ella wants t learn mre abut China. What ther gegraphical features can she ask abut? Let's think tgether."
"Here are sme famus gegraphical features in China. Let's learn their names."
3d Imagine that yu are Yaming r Ella. Cntinue the cnversatin with a partner abut ther gegraphical features in China.
Rivers are ur heritage， prtect them!