沪教牛津版（2024）七年级下册（2024）Section 4说课ppt课件

这是一份沪教牛津版（2024）七年级下册（2024）Section 4说课ppt课件，共35页。PPT课件主要包含了NEW YORK，LONDON等内容，欢迎下载使用。
Tday’s Gals
After this lessn, I will be able t:1. Understand hw water resurces shape city develpment. 2. Discuss the advantages and disadvantages f living in a city lcated near a river, lake, r cean.3. Find key infrmatin and identify imprtant data thrugh reading a scientific text.4. Develp a strng sense f respnsibility fr prtecting water.
What d these cities have in cmmn?
They are all big cities by the river r by the sea.
Lk and answer
What is the relatinship between water and the develpment f cities?
Let’s explre the rle water plays in the develpment f cities.
Pre-reading
Scan the passage and match each paragraph with its main idea.
Cities need water fr peple’s hmes, industry, business, turism and leisure activities.
Water helps create jbs and develp industries.
Mst peple live clse t water.
While-reading
Why are the wrld’s biggest cities ften next t rivers, lakes r the sea?
Because we use water fr all kinds f things in everyday life, and we als need it fr agriculture and fr trade.
What rle did water play in the Industrial Revlutin?
1.Water pwered the first machines in the clthes industry, and it als prvided the first steam engines with steam.2. It develped the glbal trade.
Read and answer
Why d nearly all big cities lcate n the cast r by rivers r lakes nw?
Because cities need water fr peple’s hmes, industry, business, turism and leisure activities.
If yu lk at a ppulatin map f any cuntry in the wrld, yu will see that mst peple live clse t water. The wrld’s biggest cities are next t rivers, lakes r the sea. This isn’t an accident. We use water fr all kinds f things in everyday life, and we als need it fr agriculture and fr trade.
In fact, water creates jbs and helps different industries t develp. At the end f the 18th century, water played a big rle in the Industrial Revlutin. Water pwered the first machines in the clthes industry, such as Richard Arkwright’s spinning① machines. It als prvided the first steam engines with steam. Thanks t rivers and ceans, businessmen culd ship their gds verseas. The grwing glbal trade created mre jbs and prvided mre incme fr peple. As a result, the cities that were clse t water grew much larger.
play a … rle in 在……中起……作用
By 2008, ver half f the wrld’s ppulatin lived in cities. Nearly all f these cities are n the cast r by rivers r lakes. This is because cities need water fr peple’s hmes, industry, business, turism② and leisure activities. Thrughut histry, water helped create and develp cities. It is nw ur duty t make sure we dn’t waste water r pllute it.
It is ne’s duty t d 做……是……的责任
make a living 谋生
在发明农耕前，人们通过捕鱼或狩猎谋生。大约1.2万年前，人们开始种植庄稼，因此拥有好的水源变得非常重要。最终，人们开始使用水力来磨面，还建造了管道来运输水。
Cmplete the sentences with the wrds and phrases belw. Change the frm if necessary.
As a result
Pst-reading
What are the advantages f living in the cities near rivers, lakes r the sea?
1. Rivers and seas prvide fish and ther seafd, which are healthy and tasty.
2. Bats and ships can carry gds and peple, making travel and trade easier.
3. Swimming, fishing, and bating are fun ways t relax and enjy nature.
Discussin 1
What are the disadvantages f living in the cities near rivers, lakes r the sea?
Water attracts msquites and ther bugs. Living near rivers r lakes means mre bites r diseases like malaria.
Areas near the sea face hurricanes, tsunamis, r big waves. These can destry buildings and put peple in danger.
Water areas are ften humid. This can make huses damp, cause mld, r make metal bjects rust faster.
1. Why is the Earth called “the blue planet”?2. What imprtant rle des the cean play in ur lives?3. Hw is the Earth different frm ther planets?
The Earth lks blue because mst f the Earth’s surface is cvered by water.
The cean prvides us with fd, and makes it pssible t transprt gds all arund the wrld.
The Earth is the nly planet knwn t have bdies f water n it.
Watch and answer
1. Use less water at hme.2. Clean beaches r rivers with friends.3. Tell thers the imprtance f rivers and ceans.4. Avid buying prducts made frm endangered sea animals.
Discussin 2
Nwadays, the cean is facing many prblems. What shuld we d t prtect the cean?
What shuld the gvernment and rganizatins d t prtect the cean?
1. Enfrce strict laws and regulatins (法律法规) t stp pllutin. 2. Set up “safe znes” in the cean where fishing are nt allwed. 3. Cuntries and rganizatins shuld share ideas and mney t slve big prblems like water pllutin and verfishing.
Crss-curricular cnnectinThe water in ur bdies
Watch and answer
What is the vide abut?
What is the main idea f the passage?
Listen and think
Read and match the main idea with each paragraph .
Scan and match
Intrductin t water in living things
Water percentage in humans
Water lss and daily intake needs
Sweating and the risks f water lss
Read the passage and cmplete the ntes.
abut 70%—80%
Scan and fill
Read paragraph 1 and answer the questins.
The authr mentins cucumbers and animals t shw that water is an imprtant part f all living things. By giving examples and percentages, the authr helps the reader understand hw much water different living things cntain.
Skim and answer
1. What is the writing methd f the first paragraph? A. Asking questins B. Using sayings C. Giving examples D. Telling stries
2. Why des the authr mentin cucumbers and animals in the first paragraph?
Read paragraph 2 and answer the questins.
1. Fill in the blanks. At birth, water makes up _______ t _______ percent f bdy weight. Fr adult men, it is abut _______, while fr adult wmen, it is arund _______ percent.
2. Accrding t the passage, which f the fllwing is true abut water percentage in the human bdy?A It stays the same thrughut life.B It increases as we grw up.C It is higher at birth than in adulthd.D It is the same fr men and wmen.
Read paragraph 3 and think.
1. Explain the relatinship between urine clr and the bdy’s need fr water. Why des the authr include this detail?
Very yellw urine means the bdy des nt have enugh water. The authr includes this detail t help peple easily knw when they need t drink mre water.
2. Why is the ttal amunt f urine and sweat different frm the amunt f water we drink?
Because the urine and sweat ttals add up t abut 2 litres, which is the lwest amunt we need. The difference is because the bdy als lses water thrugh breathing and ther functins.
Read paragraph 4 and think.
1. Put the fllwing events in the crrect rder accrding t the passage:a. The persn feels ill.b. The persn lses mre than 10% f bdy weight in water.c. The persn sweats during sprt.d. The persn lses mre than 5% f bdy weight in water and feels tired.
2. Imagine yu are ging fr a tw-hur hike n a ht day. What shuld yu bring and why? Use infrmatin frm the passage t supprt yur answer.
I shuld bring a water bttle because hiking in ht weather will make me sweat a lt. If I lse t much water, I may feel tired r even ill. Drinking water helps me stay healthy and safe.
c → d → b → a
Further thinking
What else des the bdy use water fr?
It keeps yur muth wet and washes away dirt n yur eyes.
Water in ur bld (血液) carries nutrients (营养物质) and xygen (氧气) t cells thrughut the bdy.
Water helps remve (排出) waste (废物) frm the bdy thrugh urine and sweat.
Water keeps jints (关节) lubricated (润滑) s they can mve smthly.
Write a cmpsitin
Write a shrt cmpsitin abut the relatinship between water and the human bdy.
Intrduce water in the human bdy and explain why peple need water.List sme bad drinking habits and the disadvantages.Call n peple t develp gd drinking habits and keep their bdies healthy.
Share yur cmpsitin
The Imprtance f Water t the Human Bdy Water is like fuel fr the human bdy. Our bdies cannt wrk prperly withut water. In fact, abut 60% f ur bdy weight is water. Withut enugh water, peple may feel tired, get headaches, r even face serius health prblems. Hwever, many peple have bad drinking habits. Sme wait until they feel thirsty t drink water. Others replace water with sugary drinks like sda r juice. T stay healthy, we shuld develp gd drinking habits. First, drink enugh water every day—6-8 glasses. Secnd, drink small amunts f water regularly instead f waiting until yu’re thirsty. Third, chse clean water instead f sweet drinks. Take a water bttle with yu r set alarms. These can help yu develp gd habits. In cnclusin, water is imprtant t life. Let’s value this “invisible her (隐形英雄)” in ur bdies by drinking wisely. Start tday, and yur bdy will thank yu with better energy and health!
What have we learned frm this article?
Water is the driving frce f all nature.If there is magic n this planet, it is cntained in water.
挑战层：制作「Water in Our Bdies」知识卡片 / 海报内容包括：Water Facts（水知识）：从课文中提取 3-5 个关键数字信息（如人体含水量、每日需水量、失水规律等）；Healthy Tips（健康小贴士）
提高层：小组讨论，用课文知识解释原因Why d we need t drink water every day?Why d we sweat a lt when we d sprts?What will happen if we dn’t drink enugh water?