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2020-2021学年Section A评优课教学课件ppt
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这是一份2020-2021学年Section A评优课教学课件ppt，文件包含人教版英语八年级下册Unit7第1课时A1a-2d教学课件pptx、U7A1bmp3、U7A2amp3、U7A2bmp3、U7A2dmp3、Howtoreadbignumbersmp4、U7A_2dmp4、U7A_2dswf等8份课件配套教学资源，其中PPT共38页， 欢迎下载使用。
Learning bjects（学习目标）
By the end f the class, yu will be able t:1. Learn the fllwing key wrds and phrases: square, meter, deep, desert, ppulatin, Asia, feel free, as far as I knw, prtect, ancient, turist …2. Talk abut gegraphy and nature.3. Learn t cmpare facts and express large numbers.4. Imprve students’ listening and speaking abilities.
Can yu read the fllwing numbers?
What d yu knw abut this number?
Qmlangma. It’s 8,848.86 meters high.
What abut this number?
____________. It’s ______________.
Qmlangma — 8,848.86 meters highIt’s the highest muntain in the wrld. It’s cvered with snw all year rund.
the Caspian Sea — 1,025 meters deepIt’s the biggest salt lake in the wrld. It lies at the junctin f Asia and Eurpe.
the Sahara — abut 9,600,000 square kilmeters in sizeIt’s the biggest desert in the wrld.
the Nile — 6,671 kilmeters lngIt’s the lngest river in the wrld. It runs thrugh 9 cuntries.
Match the facts yu knw.
the Caspian Sea
The Caspian Sea
abut 9,600,000 square kilmeters in size
1,025 meters deep
6,671 kilmeters lng
8,848.86 meters high
square在此处作形容词，意为“平方”，用于数字后表示面积。square还可作名词，意为“正方形；广场”。
in size 在尺寸上；在大小方面与in size结构类似的还有：in height 在高度上in weight 在重量上
Listen and cmplete the sentences.
1. Qmlangma is ______ than any ther muntain in the wrld. 2. The Sahara is __________ desert in the wrld. 3. The Caspian Sea is ___________ f all the salt lakes. 4. The Nile is __________ river in the wrld.
the biggest
the deepest
Can yu predict what we will fill in the fllwing blanks?
比较级+than any ther+可数名词单数 “……比其他任何一个……都……”，指 同一范围内的比较，表达最高级的意义。比较级+ than any +可数名词单数 “……比任何一个……都……”，指不 在同一范围内进行比较。
听关键词，可以忽略听不懂的结构。
Listen again and match the facts.
the Caspian Sea
the highest muntain in the wrld
the biggest desert in the wrld
the deepest salt lake in the wrld
the lngest river in the wrld
Teacher: Yesterday, we learned sme imprtant gegraphical facts. I hpe yu all still remember them. I’m ging t test yu nw by asking a few questins. First, what’s the highest muntain in the wrld? By 1: Qmlangma! It’s higher than any ther muntain in the wrld. Teacher: That’s right. And wh can tell me what the Sahara is? Girl 1: The Sahara is the biggest desert in the wrld.
Tapescripts
Teacher: Very gd. And which is the deepest salt lake in the wrld? Girl 2: The Caspian Sea is the deepest f all the salt lakes.Teacher: Yu’re all s smart! Nw, fr the last questin, which is the lngest river in the wrld?By 2: I knw! The Nile is the lngest river in the wrld. By 1: And the Amazn is the secnd lngest river in the wrld. Teacher: It seems that yu knw the answers t all my questins. Gd jb!
“the+序数词+最高级+单数名词+in…”表示“是……中的第几……”
What d yu knw abut these places?
Qmlangma is higher than any ther muntain in the wrld. It’s 8,848.86 meters high.
The Nile is the lngest river in the wrld. It’s 6,671 kilmeters lng.
The Caspian Sea is the deepest f all the salt lakes. It’s 1,025 meters deep.
The Sahara is the biggest desert in the wrld. It’s abut 9,600,000 square kilmeters in size.
Use the infrmatin in 1b t make cnversatins.
What is the highest muntain in the wrld?
What is the _______ ______ in the wrld?
The Sahara.
What is the deepest salt lake in the wrld?
_______________.
__________________________________________
What is the lngest river in the wrld?
D yu knw hw t read big numbers? Let’s watch a vide.
Read the numbers belw.
Make as many sentences as yu can t cmpare the fur numbers.
six thusand and three hundred
five thusand, fur hundred and sixty-five
five thusand
three hundred
Fr example:6,300 is the biggest/largest number.6,300 is much bigger than 5,000.
Listen and number the facts [1- 4] in the rder yu hear them.
6,300 5,000 5,464 300
___ The Yangtze River is abut ______ kilmeters lng and the Yellw River is ______ kilmeters lng.
___ China has the biggest ppulatin in the wrld. It’s a lt bigger than the ppulatin f the US.___ China is ver ______ years ld. It has a much lnger histry than the US. The US is nt even _____ years ld.___ China is almst as big as the US, and it is the biggest cuntry in Asia.
Listen again and fill in the blanks in 2a with the numbers in the bx.
___ The Yangtze River is abut ______ kilmeters lng and the Yellw River is ______ kilmeters lng.___ China has the biggest ppulatin in the wrld. It’s a lt bigger than the ppulatin f the US.
1. 集体名词，作主语时，谓语动词用第三人称单数形式。2. 表示人口“多”或“少”时，常用large，big或small。3. 分数或百分数修饰ppulatin作主语时，谓语动词用单 复数均可。4. 询问人口数量时，用“What’s the ppulatin f …?” 或“Hw large is the ppulatin f …?”。
___ China is ver ______ years ld. It has a much lnger histry than the US. The US is nt even _____ years ld.___ China is almst as big as the US, and it is the biggest cuntry in Asia.
much在此作副词，“非常；很”，表示程度，修饰比较级。可用于修饰比较级的词还有a lt, a little, a bit, even, far等。
Listen again and judge.
The Yangtze River is shrter than the Yellw River.
China is ne f the ldest cuntries in the wrld and it has the biggest ppulatin, t.
China is the biggest cuntry in the wrld.
The Yellw River is the lngest river in Asia.
Mike: Hi, I’m Mike. I’m frm the United States. By: Welcme t ur class, Mike. We’re happy t meet yu.Mike: Can yu tell me a bit mre abut China? Girl: Sure! Did yu knw that China is ne f the ldest cuntries in the wrld? It’s ver 5,000 years ld.
Mike: Yes, I did. It’s much lder than my cuntry — in fact, the United States is ne f the yungest cuntries in the wrld. It’s nt even 300 years ld.
that引导的宾语从句
ne f the+形容词最高级+可数名词复数“最……的……之一”，作主语时，谓语动词用单数形式。
Mike: Ww! I didn’t knw that. I thught the Yellw River was lnger. By: N, the Yellw River is 5,464 kilmeters lng. But bth rivers are very imprtant t China.
Mike: But China is abut the same size as the US, right? Girl: Yes, and it’s the biggest cuntry in Asia. We als have sme famus rivers. The Yangtze River is the lngest river in Asia. It’s abut 6,300 kilmeters lng.
By: And China has the biggest ppulatin, t. It’s a lt bigger than the ppulatin f the United States.
Make cnversatins using the infrmatin in 2a.
Chat with yur friend
Did yu knw that China is the biggest cuntry in Asia?
Yes, I did. It’s almst as big as the US.
Did yu knw that Yangtze River is the lngest river in China?
Yes, I did. It’s abut 6,300 kilmeters lng.
Read the cnversatin in 2d fast and find ut the main idea f it.
Fast reading
It’s abut a tur t the Ming Great Wall.
Read the cnversatin and judge.
1. The Ming Great Wall is abut 8,850 kilmeters lng.
2. The nly reasn why the ancient emperrs built the wall was t prtect their part f the cuntry.
3. Badaling is the mst famus part f the Ming Great Wall.
Careful reading
the main reasn t build
the mst famus part
abut 8,850 kilmeters lng
prtect their part f the cuntry
Read the cnversatin and fill in the table.
The Ming Great Wall
If we’re nly talking abut the parts frm the Ming Dynasty, it’s abut 8,850 kilmeters _____. This makes it the _______ wall in the wrld. The main reasn why the ancient emperrs built the wall was t prtect their part f the cuntry. As yu can see, it’s quite ____ and _____. As far as I knw, there are n ther __________ bjects as big as this.
Read the cnversatin and fill in the blanks.
Feel free t ask me anything n tday’s Great Wall tur.
Rle-play the cnversatin.
Hw lng is the wall?
Ah, the mst ppular questin! If we’re nly talking abut the parts frm the Ming Dynasty, it’s abut 8,850 kilmeters lng. This makes it the lngest wall in the wrld.
feel free t d sth.(可以)随便(做某事)
tur作名词：a tur f/arund… ……的旅行辨析：tur, trip, jurney与traveltur常指以观光、视察、购物等为目的的旅行，也可指明星的巡演。trip常指短距离的旅行、远足。jurney常指远距离的陆地旅行。travel常指远距离旅行或国外旅行。tur作动词：“旅行；旅游”turist是可数名词，“旅行者；观光者”
The main reasn was t prtect their part f the cuntry. As yu can see, it’s quite tall and wide. As far as I knw, there are n ther man-made bjects as big as this.
Ww, that’s amazing! Why did the ancient emperrs build the wall?
Yes, it’s the mst famus part.
Is Badaling part f the Ming Great Wall?
辨析：amazing与amazedamazing “令人大为惊奇的；令人惊喜（或惊叹）的”，其主语或所修饰的名词通常是物，常用来说明事物的特征。amazed“大为惊奇的”，其主语或所修饰的名词通常是人，常用来说明人的感受。
prtect … frm / against… 保护……不受……（的伤害 ）prtectin n. 保护；保卫
= s far as I knw就我所知
Pay attentin t the prnunciatin and the intnatin.
Watch and read after the recrding.
Try t intrduce the interesting places in yur hmetwn t the turists.
T be a little guide
Wrds & Phrases: square, meter, ppulatin, tur, turist, amazing, prtect, deep, desert, ancient, feel free t d sth., as far as I knw…Sentences:Qmlangma is higher than any ther muntain in the wrld.China is almst as big as the US…Did yu knw that China is ne f the ldest cuntries in the wrld?
Learning bjects（学习目标）
By the end f the class, yu will be able t:1. Learn the fllwing key wrds and phrases: square, meter, deep, desert, ppulatin, Asia, feel free, as far as I knw, prtect, ancient, turist …2. Talk abut gegraphy and nature.3. Learn t cmpare facts and express large numbers.4. Imprve students’ listening and speaking abilities.
Can yu read the fllwing numbers?
What d yu knw abut this number?
Qmlangma. It’s 8,848.86 meters high.
What abut this number?
____________. It’s ______________.
Qmlangma — 8,848.86 meters highIt’s the highest muntain in the wrld. It’s cvered with snw all year rund.
the Caspian Sea — 1,025 meters deepIt’s the biggest salt lake in the wrld. It lies at the junctin f Asia and Eurpe.
the Sahara — abut 9,600,000 square kilmeters in sizeIt’s the biggest desert in the wrld.
the Nile — 6,671 kilmeters lngIt’s the lngest river in the wrld. It runs thrugh 9 cuntries.
Match the facts yu knw.
the Caspian Sea
The Caspian Sea
abut 9,600,000 square kilmeters in size
1,025 meters deep
6,671 kilmeters lng
8,848.86 meters high
square在此处作形容词，意为“平方”，用于数字后表示面积。square还可作名词，意为“正方形；广场”。
in size 在尺寸上；在大小方面与in size结构类似的还有：in height 在高度上in weight 在重量上
Listen and cmplete the sentences.
1. Qmlangma is ______ than any ther muntain in the wrld. 2. The Sahara is __________ desert in the wrld. 3. The Caspian Sea is ___________ f all the salt lakes. 4. The Nile is __________ river in the wrld.
the biggest
the deepest
Can yu predict what we will fill in the fllwing blanks?
比较级+than any ther+可数名词单数 “……比其他任何一个……都……”，指 同一范围内的比较，表达最高级的意义。比较级+ than any +可数名词单数 “……比任何一个……都……”，指不 在同一范围内进行比较。
听关键词，可以忽略听不懂的结构。
Listen again and match the facts.
the Caspian Sea
the highest muntain in the wrld
the biggest desert in the wrld
the deepest salt lake in the wrld
the lngest river in the wrld
Teacher: Yesterday, we learned sme imprtant gegraphical facts. I hpe yu all still remember them. I’m ging t test yu nw by asking a few questins. First, what’s the highest muntain in the wrld? By 1: Qmlangma! It’s higher than any ther muntain in the wrld. Teacher: That’s right. And wh can tell me what the Sahara is? Girl 1: The Sahara is the biggest desert in the wrld.
Tapescripts
Teacher: Very gd. And which is the deepest salt lake in the wrld? Girl 2: The Caspian Sea is the deepest f all the salt lakes.Teacher: Yu’re all s smart! Nw, fr the last questin, which is the lngest river in the wrld?By 2: I knw! The Nile is the lngest river in the wrld. By 1: And the Amazn is the secnd lngest river in the wrld. Teacher: It seems that yu knw the answers t all my questins. Gd jb!
“the+序数词+最高级+单数名词+in…”表示“是……中的第几……”
What d yu knw abut these places?
Qmlangma is higher than any ther muntain in the wrld. It’s 8,848.86 meters high.
The Nile is the lngest river in the wrld. It’s 6,671 kilmeters lng.
The Caspian Sea is the deepest f all the salt lakes. It’s 1,025 meters deep.
The Sahara is the biggest desert in the wrld. It’s abut 9,600,000 square kilmeters in size.
Use the infrmatin in 1b t make cnversatins.
What is the highest muntain in the wrld?
What is the _______ ______ in the wrld?
The Sahara.
What is the deepest salt lake in the wrld?
_______________.
__________________________________________
What is the lngest river in the wrld?
D yu knw hw t read big numbers? Let’s watch a vide.
Read the numbers belw.
Make as many sentences as yu can t cmpare the fur numbers.
six thusand and three hundred
five thusand, fur hundred and sixty-five
five thusand
three hundred
Fr example:6,300 is the biggest/largest number.6,300 is much bigger than 5,000.
Listen and number the facts [1- 4] in the rder yu hear them.
6,300 5,000 5,464 300
___ The Yangtze River is abut ______ kilmeters lng and the Yellw River is ______ kilmeters lng.
___ China has the biggest ppulatin in the wrld. It’s a lt bigger than the ppulatin f the US.___ China is ver ______ years ld. It has a much lnger histry than the US. The US is nt even _____ years ld.___ China is almst as big as the US, and it is the biggest cuntry in Asia.
Listen again and fill in the blanks in 2a with the numbers in the bx.
___ The Yangtze River is abut ______ kilmeters lng and the Yellw River is ______ kilmeters lng.___ China has the biggest ppulatin in the wrld. It’s a lt bigger than the ppulatin f the US.
1. 集体名词，作主语时，谓语动词用第三人称单数形式。2. 表示人口“多”或“少”时，常用large，big或small。3. 分数或百分数修饰ppulatin作主语时，谓语动词用单 复数均可。4. 询问人口数量时，用“What’s the ppulatin f …?” 或“Hw large is the ppulatin f …?”。
___ China is ver ______ years ld. It has a much lnger histry than the US. The US is nt even _____ years ld.___ China is almst as big as the US, and it is the biggest cuntry in Asia.
much在此作副词，“非常；很”，表示程度，修饰比较级。可用于修饰比较级的词还有a lt, a little, a bit, even, far等。
Listen again and judge.
The Yangtze River is shrter than the Yellw River.
China is ne f the ldest cuntries in the wrld and it has the biggest ppulatin, t.
China is the biggest cuntry in the wrld.
The Yellw River is the lngest river in Asia.
Mike: Hi, I’m Mike. I’m frm the United States. By: Welcme t ur class, Mike. We’re happy t meet yu.Mike: Can yu tell me a bit mre abut China? Girl: Sure! Did yu knw that China is ne f the ldest cuntries in the wrld? It’s ver 5,000 years ld.
Mike: Yes, I did. It’s much lder than my cuntry — in fact, the United States is ne f the yungest cuntries in the wrld. It’s nt even 300 years ld.
that引导的宾语从句
ne f the+形容词最高级+可数名词复数“最……的……之一”，作主语时，谓语动词用单数形式。
Mike: Ww! I didn’t knw that. I thught the Yellw River was lnger. By: N, the Yellw River is 5,464 kilmeters lng. But bth rivers are very imprtant t China.
Mike: But China is abut the same size as the US, right? Girl: Yes, and it’s the biggest cuntry in Asia. We als have sme famus rivers. The Yangtze River is the lngest river in Asia. It’s abut 6,300 kilmeters lng.
By: And China has the biggest ppulatin, t. It’s a lt bigger than the ppulatin f the United States.
Make cnversatins using the infrmatin in 2a.
Chat with yur friend
Did yu knw that China is the biggest cuntry in Asia?
Yes, I did. It’s almst as big as the US.
Did yu knw that Yangtze River is the lngest river in China?
Yes, I did. It’s abut 6,300 kilmeters lng.
Read the cnversatin in 2d fast and find ut the main idea f it.
Fast reading
It’s abut a tur t the Ming Great Wall.
Read the cnversatin and judge.
1. The Ming Great Wall is abut 8,850 kilmeters lng.
2. The nly reasn why the ancient emperrs built the wall was t prtect their part f the cuntry.
3. Badaling is the mst famus part f the Ming Great Wall.
Careful reading
the main reasn t build
the mst famus part
abut 8,850 kilmeters lng
prtect their part f the cuntry
Read the cnversatin and fill in the table.
The Ming Great Wall
If we’re nly talking abut the parts frm the Ming Dynasty, it’s abut 8,850 kilmeters _____. This makes it the _______ wall in the wrld. The main reasn why the ancient emperrs built the wall was t prtect their part f the cuntry. As yu can see, it’s quite ____ and _____. As far as I knw, there are n ther __________ bjects as big as this.
Read the cnversatin and fill in the blanks.
Feel free t ask me anything n tday’s Great Wall tur.
Rle-play the cnversatin.
Hw lng is the wall?
Ah, the mst ppular questin! If we’re nly talking abut the parts frm the Ming Dynasty, it’s abut 8,850 kilmeters lng. This makes it the lngest wall in the wrld.
feel free t d sth.(可以)随便(做某事)
tur作名词：a tur f/arund… ……的旅行辨析：tur, trip, jurney与traveltur常指以观光、视察、购物等为目的的旅行，也可指明星的巡演。trip常指短距离的旅行、远足。jurney常指远距离的陆地旅行。travel常指远距离旅行或国外旅行。tur作动词：“旅行；旅游”turist是可数名词，“旅行者；观光者”
The main reasn was t prtect their part f the cuntry. As yu can see, it’s quite tall and wide. As far as I knw, there are n ther man-made bjects as big as this.
Ww, that’s amazing! Why did the ancient emperrs build the wall?
Yes, it’s the mst famus part.
Is Badaling part f the Ming Great Wall?
辨析：amazing与amazedamazing “令人大为惊奇的；令人惊喜（或惊叹）的”，其主语或所修饰的名词通常是物，常用来说明事物的特征。amazed“大为惊奇的”，其主语或所修饰的名词通常是人，常用来说明人的感受。
prtect … frm / against… 保护……不受……（的伤害 ）prtectin n. 保护；保卫
= s far as I knw就我所知
Pay attentin t the prnunciatin and the intnatin.
Watch and read after the recrding.
Try t intrduce the interesting places in yur hmetwn t the turists.
T be a little guide
Wrds & Phrases: square, meter, ppulatin, tur, turist, amazing, prtect, deep, desert, ancient, feel free t d sth., as far as I knw…Sentences:Qmlangma is higher than any ther muntain in the wrld.China is almst as big as the US…Did yu knw that China is ne f the ldest cuntries in the wrld?
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