人教版（2024）八年级下册（2024）Section B备课ppt课件

这是一份人教版（2024）八年级下册（2024）Section B备课ppt课件，共34页。PPT课件主要包含了Summary，Homework等内容，欢迎下载使用。
Lessn Objectives:
In this lessn, we will be able t:
1. Master key wrds and phrases abut natural wnders. Learn t use superlatives, cmparatives and large numbers t describe natural wnders.2. Cmplete grup research, make a pster and give a shrt reprt abut Munt Tai. Imprve reading cmprehensin thrugh the extended passage abut the Sahara Desert.3. Develp a sense f pride in China’s natural wnders and lve fr nature. Understand the imprtance f prtecting natural envirnments.
Watch and answer
What is the name f this amazing place?
Is it the largest rainfrest in the wrld?
The Amazn Rainfrest.
Yes, it is.
What natural wnders are they? What special facts d yu knw abut these natural wnders? Chse ne and share with us.
the Great Barrier Reef
Munt Qmlangma
the Mariana Trench
the Sahara Desert
the Yangtze River
the Yellw River
Design a pster abut a natural wnder设计一张关于某处自然奇观的海报
Read and answer the questins.
the wrld’s biggest rainfrest6 millin square kilmetres in sizein Brazil, Peru, Clmbia, and five ther cuntriescalled “the lungs f the earth”the largest variety f plants and animals in the wrld
a variety f 各种各样的
What’s the natural wnder?What size is it?What’s its lcatin(位置)?
Amazn Rainfrest.
In Brazil, Peru, Clmbia, and five ther cuntries.
It’s 6 millin square kilmetres in size.
What special facts d yu knw abut it?
It’s wrld’s biggest rainfrest.It’s called “the lungs f the earth”.It’s the largest variety f plants and animals in the wrld.
Wrk in grups. Chse Munt Tai as ur natural wnder, and cllect infrmatin abut these parts:namelcatin and size/heightfur wnders f Munt Taispecial facts
小组任务：制作Munt Tai主题海报标题：Munt Tai / "The First Muntain Under Heaven"板块1: Name & Lcatin (Munt Tai, in Shandng Prvince, eastern China)板块2: Size & Height (250 km², 1,545 meters high)板块3: fur wnders板块4: Special Facts (UNESCO site, ancient histry, "Five Great Muntains")配图：简笔画或贴画
The Amazn Rainfrest is thewrld’s biggest rainfrest.It cvers 6 millin squarekilmetres. Yu can see mst fit in three cuntries, Brazil, Peru,and Clmbia …
Munt Tai is ne f the mst famus natural wnders in China. It is abut 250 square kilmetres in size, and its highest peak is 1,545 meters high. It is in Shandng Prvince, eastern China. Munt Tai is famus fr its Fur Wnders: sunrise ver the peak, sunset glw, Yellw River glden belt, and a sea f cluds and Jade Plate. Munt Tai is als a UNESCO Wrld Heritage Site. It is called "the First Muntain Under Heaven" and has a histry f ver 2,000 years. It is nt nly a natural wnder, but als a cultural treasure f China.
1. What new facts abut natural wnders have yu learnt?2. Can yu make cmparisns when talking abut natural wnders?3. Can yu use large numbers t give sme gegraphy facts?4. Can yu explain hw and why peple cnnect with nature?5. What are sme achievements that peple have made while explring nature?
你学到了关于自然奇观的哪些新知识？
在谈论自然奇观时，你能进行比校吗？
你能使用大数字来表述一些地理事实吗？
你能解释人们是如何以及为何与大自然建立联系的吗？
大自然让我们心生好奇，这正是它的奇妙之处。
人们在探索大自然的过程中取得了哪些成就？
Reading plus
What d yu knw abut the Sahara Desert?
Is the Sahara Desert the largest desert in the wrld? D yu knw hw ld the Sahara is?
Let’s read the passage and find ut if yur guesses are right.
Read the text paragraph by paragraph.
The Sahara Desert
Lcated in Africa, the Sahara Desert spreads acrss 30 per cent f the cntinent. This vast desert, als knwn as “the great desert” in Arabic, is abut 9 millin square kilmetres in size. It is als at least 4.6 millin years ld. This means that it is ne f the ldest places in the wrld.All deserts are dry, and the Sahara is bth dry and ht. It is the largest ht desert in the wrld. We may think that all deserts are ht, but in fact sme deserts are very cld! Many scientists believe that Antarctica, fr example, is a type f cld desert.
spread acrss 横跨；遍布
in size 在尺寸上;在大小方面
at least 至少
a type f 一种
Mst f the Sahara is rcky grund. But there are als places with grass, lakes, muntains, and even sand seas. A sand sea is just what it sunds like—it lks like a sea f sand! When the wind blws, the sand lks like waves. Life in the Sahara is difficult. Abut tw millin peple live in the Sahara. They usually mve frm place t place. There is water in a few parts f the Sahara, and sme peple live in these places all year rund.
what引导的表语从句，说明沙海是什么样的
frm place t place 到处; 从一个地方到另一个地方
all year rund 全年
Nt many animals can live in a place with such a dry and ht climate. They must adapt t survive. Camels, fr example, g fr a lng time withut drinking water. When they d find water, they can drink mre than 100 litres f it in 13 minutes! Fennec fxes live in the desert t. They have large ears t help their bdies stay cl.Tday, the wrld’s largest ht desert is getting even bigger. It is nw abut 10 per cent larger than what it was abut a century ag. But why is it grwing? Sme scientists believe that part f the reasn is climate change. As temperatures rise, summers in Africa grw htter and less rain falls. Water bdies get smaller and the grund gets drier and drier. If we d nt take effective measures, the desert will keep grwing!
此处的d是强调助动词,当句中无其他助动词时,用于加强语气。
不定式作目的状语，说明大耳朵的作用
比较级+and+比较级 越来越干燥
Read again and chse.
1. Where is the Sahara Desert? ( ) A. Asia B. Africa C. Suth America 2. What percentage f Africa des the Sahara cver? ( ) A. 30% B. 20% C. 10% 3. What is the size f the Sahara? ( ) A. 5.5 millin km² B. 9 millin km² C. 4.6 millin km² 4. Which animal is NOT mentined in the passage? ( ) A. Camels B. Fennec fxes C. Pandas. 5. Hw much water can a camel drink in 13 minutes? ( ) A. 50 litres B. 100 litres C. Mre than 100 litres
6. Why is the Sahara grwing? ( ) A. Mre rain B. Climate change C. Mre animals 7. Which f the fllwing is TRUE? ( ) A. The Sahara is the ldest place in the wrld B. N peple live in the Sahara C. Sme parts f the Sahara have grass and lakes
abut 9 millin squarekilmetres
abut 10% larger than what it was abut a century ag
at least 4.6 millinyears ld
abut 2 millin peple; animals like camels and fennec fxes
rcky grund, grass, lakes, muntains, and sand seas
1. Hw is life in the desert different frm ther places where peple live?
Life is difficult because f heat, lack f water, and frequent mvement fr survival.
2. Wuld yu like t visit the Sahara Desert r even live there fr a while? Why r Why nt?
I wuld like t visit the Sahara Desert fr adventures. I wuld nt like t live there because the envirnment is severe(恶劣的).
3. What d yu think will happen if the Sahara keeps getting bigger? What shuld we d abut it?
There may be mre drughts. We must fight climate change by reducing pllutin.
I. 阅读短文, 从方框中选择适当的词并用其正确形式填空。
Yu must have heard f the legend f Yu Gng, wh tried t mve tw muntains. The Taihang Muntain was ne f the tw muntains. The Taihang Muntain 1. ____________ thrugh the aress f Hebei, Shanxi, Henan and Beijing. It is abut 400 kilmetres lng. It is a large muntain range in Nrth China, and it 2. ___________ called “the backbne(脊梁) f China” in ancient times. Many f the legends abut the very beginning f human civilizatin cme 3. ____________ the Taihang area. Fr example, Nüwa used stnes t repair the sky t make sure that humans wuld have a 4. __________ and safer future; Huyi prtected everyne by 5. ____________ the suns;
gd treat sht frm change discvery nature pass if be
pass thrugh 通过；穿过
Emperr Yan, ne f the earliest Chinese emperrs, tried large numbers f herbs and taught peple hw t use them t 6. ___________ diseases. The Taihang Muntain is nt nly where the ancient stries happened, but als a place where tens f thusands f fssile(化石) were fund. These fssils shw the 7. ____________ earth. At the same time, we can als learn abut hw ancient humans lived frm many 8. ____________ arund the area. Nwadays, there are 9. __________ frests arund the area with beautiful clurs in fur seasns. It is hme t many animals and plants as well. 10. __________ yu need a trip that helps yu learn different things abut histry, culture and s n, yu can g t the Taihang Muntain.
II. 完形填空(常识推理法)。
（2025泸州中考节选）“We can bring the pnd back t life," Maddie said. Bringing a pnd back t life was a lt f 23 . They gt the water ut, dug ut the ld sil, cleaned the sides and cleared away the dry leaves and plants arund the pnd. Then, they placed rcks at the bttm. After that, they bught sme plants and gldfish and 24 (put) all these in their pnd.( ) 23. A. sil B. water C. wrk D. mney
本题可采用“常识推理法”解答。首先确定这篇文章的主题是让池塘恢复生机；根据下文中的“gt the water ut, dug ut the ld the pnd”及常识可知，排水、挖土、清理周边杂物等都是具体的劳动，选项A、B、D均不符合语境；wrk可以概括这些动作，符合语境。故选C。
让池塘恢复生机‌bring ... back t life‌ “使……复活”‌ / ‌“使……重获生机”‌
We learn:1. Vcabulary: Wrds abut natural wnders: lcatin, height, size, wildlife, heritage, climate change. Phrases: spread acrss, adapt t, take measures, be knwn as, ne f Sentence Patterns: Describing natural wnders: It is ... meters high / ... square kilmetres in size. Using superlatives: the mst famus, the highest, the largest. Expressing facts: It is called... / It is als can:1. Cllect infrmatin and make a pster abut a natural wnder in grups.2. Give a shrt reprt using large numbers and superlatives.3. Understand and analyze a reading passage abut a natural wnder.
1. 基础层：写5个关于泰山的句子，其中包含2个比较级和1个 最高级。2. 提高层：制作一个对比表格，比较亚马逊雨林和撒哈拉沙漠 （面积、温度、动物等方面）。3. 拓展层：写一段短文：《如果我能保护一个自然奇观，我会 选择……因为……》。