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初中英语冀教版八年级下册Lesson 38 The World Is a Big Place图文课件ppt
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这是一份初中英语冀教版八年级下册Lesson 38 The World Is a Big Place图文课件ppt，文件包含Lesson38pptx、Lesson38mp3、SevenContinentsmp4等3份课件配套教学资源，其中PPT共29页， 欢迎下载使用。
Key wrds & phrases: planet; ttal; increase; surface; Indian; in ttal; ne third; be cvered with; tw thirds. Key sentences: 1. These dry places are called deserts. 2. The Pacific Ocean is the largest ne. 3. It must be treated well fr ur children and fr ur children’s children, t!T learn abut sme gegraphical facts f the earth.
Wrds & Expressins
planetbillinttalincreasesurfaceIndian
n. 行星n. 十亿；千兆n. 总计；总数 adj. 总的；总计的v. 增加；增大n. 表面；表层adj. 印度的 n. 印度人
AtlanticArcticin ttalne thirdbe cvered withtw thirds
n. 大西洋的adv. 北极的总计；合计；总共三分之一被……覆盖三分之二
Let's eniy a sng !
Hw many cntinents are there in the wrld? What are they?
北美洲 Nrth America
南极洲：Antarctica
大洋洲：Oceania
南美洲 suth America
What d yu knw abut the place where yu live?
Which cntinent des it belng t?
What’s the ppulatin f yur city?
What’s the weather like?
What’s the prblem that yur city faces?
What’s yur advice?
Hw many cntinents and ceans des the wrld have?Can yu pint them ut?
Presentatin
The earth is a very special planet, and it faces a big prblem. In the year 2010, the wrld’s ppulatin was ver 7 billin in ttal. It is increasing very quickly. By 2025, the wrld may have abut 8 billin peple. And by 2050, the wrld’s ppulatin may reach 9 billin.
There is anther prblem. Peple can’t live everywhere n the earth. We can’t live in water, and nly abut ne third f ur planet is land. But parts f this land are very dry. These dry places are called deserts. Sme areas have very high muntains. Others have a lt f snw and ice. It is nt easy t live in thse places.
There are seven cntinents: Asia, Africa, Australia, Antarctica, Eurpe, Nrth America and Suth America. Antarctica is cvered with snw and ice all year rund. Luckily, peple can live n the ther six cntinents. On these cntinents, there are green frests, fresh water and rich lands.
Oceans cver tw thirds f the earth's surface. The earth has nly ne big cean, but we use these names fr its different parts: the Pacific Ocean, the Indian Ocean, the Atlantic Ocean and the Arctic Ocean. The Pacific Ocean is the largest ne. The earth is ur hme nw, and it will be ur hme in the future. It must be treated well fr ur children and fr ur children’s children, t!
Let’s D It!
1. Read the lessn and match each paragraph with its main idea.
Paragraph 1 a. Six f the seven cntinents are gd fr peple t live n. Paragraph 2 b. We shuld treat the earth well. Paragraph 3 c. An increasing ppulatin is a big prblem fr the earth. Paragraph 4 d. Tw thirds f the earth is cvered with ceans. Paragraph 5 e. Peple cannt live everywhere n the earth.
2. Fill in the blanks with the crrect frms f the wrds in the bx.
1. The number f swimmers here is __________ quickly because it’s very ht these days. 2. The schl has a ________ f 900 students. 3. I think it may be the ________ seasn f the year. 4. The ________ f ur bdy is skin. It prtects us. 5. Hw many ________ f peple are there in the wrld nw?
3. Match the seven cntinents with their crrect descriptins.
Suth America
It is the biggest cntinent. It has the highest pint n the earth in the Himalayas.
It is the sixth largest cntinent. It is a gd place fr peple t travel t.
It is the furth largest cntinent. There are 13 cuntries n this cntinent.
Nrth America
It is the secnd largest cntinent. Many elephants, giraffes, zebras and lins live there.
It is the smallest cntinent. Yu can find kalas and kangars there.
It is the fifth largest cntinent. The Suth Ple is n this cntinent.
It is the third largest cntinent. Canada, Mexic and the U. S. are the three majr cuntries n this cntinent.
Language pints
1. The earth is a very special planet, and it faces a big prblem（教材P100）
planet n.行星 为可数名词，指环绕恒星运转的星球。e. g. The earth is the nly planet that we knw has life at present. 地球是目前我们所知的唯一有生命存在的行星。
2. In the year 2010, the wrld’s ppulatin was ver 7 billin in ttal. （教材P100）
billin n. 十亿; 千兆billin前有数词修饰时，billin不能用复数形式。billins f意为“数十亿的”，表示不确定的数量。e. g. We want tw billin. 我们想要20 亿。There are billins f stars in the sky. 天上有数十亿的星星。
ttal n. 总计; 总数 adj. 总的; 总计的e. g. A ttal f twenty letters were received last mnth. 上个月共收到20 封信。Yu can chse fur ut f the ttal number. 你可以从总数中选出四个。The prblem is hw much the ttal payment is. 问题是要支付的总额是多少。In ttal ver 1, 000 peple attended the cnference. 共计一千多人参加了这个会议。
3. It is increasing very quickly.（教材P100）
increase v. 增加; 增大 也可作名词。反义词为decrease。常用短语n the increase “正在增加；不断增长”。e. g. These cases are n the increase. 这些案件在不断增加。His pwer increased. 他的权力加强了。
辨析：increase by 与increase t① increase by ＋倍数或百分数，表示“增加了……倍或百分之……”。② increase t＋具体增长后的数字，表示“增加到了……”
The ppulatin f this city has increased by 5 percent. 这个城市的人口增长了5%。Our cal utput has increased t 6 millin tns this year. 我们今年的煤产量增加到了六百万吨。
4. We can’t live in water, and nly abut ne third f ur planet is land. （教材P100）
ne third 三分之一分数表达法: 分子用基数词, 分母用序数词。分子如果大于1, 分母用复数形式。
注意: 二分之一不能说a/ne secnd, 而要说 a/ne half; 四分之一和四分之三常用a quarter 和 three quarters 表示。
当“分数＋f+名词”结构作主语时，谓语动词的单复数取决于f后面的名词。名词为可数名词复数，谓语动词用复数；名词为不可数名词，谓语动词用单数。
e. g. Tw thirds f the students in ur class are girls. 我们班三分之二的学生是女生。Three quarters f the infrmatin is true. 四分之三的信息是真实的。
5. Antarctica is cvered with snw and ice all year rund.（教材P100）
be cvered with 被……覆盖主动结构为：(用……盖住……)e. g. Our garden is cvered with grass and flwers. 我们的花园被花草覆盖着。Please cver this desk with a clth. 请用一块布盖住这张课桌。
6. It must be treated well fr ur children and fr ur children’s children, t!
情态动词的被动语态本句中 must be treated 是含情态动词的被动语态, 其结构为“情态动词(shuld, must, may, can, culd 等) ＋ be ＋动词的过去分词”。
treat v. 对待; 看待 常用结构：treat sb. as... 把某人看作……treat/regard sb. with...以……对待某人e. g. They treat the dg as a member f their family. 他们把狗视作家庭的一员。She treats every child with kindness. 她用善心对待每个孩子。
一、根据汉语或首字母提示，完成单词
1. The biggest cean in the wrld is the P_______Ocean.2. Almst everyne knws the e_____ ges arund the sun.3. Deserts may cver three _________ (百分比) f the earth’s surface.4. The ppulatin f the wrld is __________ (增长) quickly.5. Hainan is the secnd-largest _________ (岛屿) in China.6. After half a mnth at sea, we saw ____(陆地).
二、用适当的介词填空。
1. _____ 2025, the wrld will have 7.8 billin peple.2. Milk is gd _________ children.3. The Nile River is the lngest river _________Africa.4. Which part _________ the wrld d yu live in?5. _________ the surface f the earth, there is sme dry land.
Key wrds & phrases: planet; ttal; increase; surface; Indian; in ttal; ne third; be cvered with; tw thirds. Key sentences: 1. These dry places are called deserts. 2. The Pacific Ocean is the largest ne. 3. It must be treated well fr ur children and fr ur children’s children, t!T learn abut sme gegraphical facts f the earth.
Wrds & Expressins
planetbillinttalincreasesurfaceIndian
n. 行星n. 十亿；千兆n. 总计；总数 adj. 总的；总计的v. 增加；增大n. 表面；表层adj. 印度的 n. 印度人
AtlanticArcticin ttalne thirdbe cvered withtw thirds
n. 大西洋的adv. 北极的总计；合计；总共三分之一被……覆盖三分之二
Let's eniy a sng !
Hw many cntinents are there in the wrld? What are they?
北美洲 Nrth America
南极洲：Antarctica
大洋洲：Oceania
南美洲 suth America
What d yu knw abut the place where yu live?
Which cntinent des it belng t?
What’s the ppulatin f yur city?
What’s the weather like?
What’s the prblem that yur city faces?
What’s yur advice?
Hw many cntinents and ceans des the wrld have?Can yu pint them ut?
Presentatin
The earth is a very special planet, and it faces a big prblem. In the year 2010, the wrld’s ppulatin was ver 7 billin in ttal. It is increasing very quickly. By 2025, the wrld may have abut 8 billin peple. And by 2050, the wrld’s ppulatin may reach 9 billin.
There is anther prblem. Peple can’t live everywhere n the earth. We can’t live in water, and nly abut ne third f ur planet is land. But parts f this land are very dry. These dry places are called deserts. Sme areas have very high muntains. Others have a lt f snw and ice. It is nt easy t live in thse places.
There are seven cntinents: Asia, Africa, Australia, Antarctica, Eurpe, Nrth America and Suth America. Antarctica is cvered with snw and ice all year rund. Luckily, peple can live n the ther six cntinents. On these cntinents, there are green frests, fresh water and rich lands.
Oceans cver tw thirds f the earth's surface. The earth has nly ne big cean, but we use these names fr its different parts: the Pacific Ocean, the Indian Ocean, the Atlantic Ocean and the Arctic Ocean. The Pacific Ocean is the largest ne. The earth is ur hme nw, and it will be ur hme in the future. It must be treated well fr ur children and fr ur children’s children, t!
Let’s D It!
1. Read the lessn and match each paragraph with its main idea.
Paragraph 1 a. Six f the seven cntinents are gd fr peple t live n. Paragraph 2 b. We shuld treat the earth well. Paragraph 3 c. An increasing ppulatin is a big prblem fr the earth. Paragraph 4 d. Tw thirds f the earth is cvered with ceans. Paragraph 5 e. Peple cannt live everywhere n the earth.
2. Fill in the blanks with the crrect frms f the wrds in the bx.
1. The number f swimmers here is __________ quickly because it’s very ht these days. 2. The schl has a ________ f 900 students. 3. I think it may be the ________ seasn f the year. 4. The ________ f ur bdy is skin. It prtects us. 5. Hw many ________ f peple are there in the wrld nw?
3. Match the seven cntinents with their crrect descriptins.
Suth America
It is the biggest cntinent. It has the highest pint n the earth in the Himalayas.
It is the sixth largest cntinent. It is a gd place fr peple t travel t.
It is the furth largest cntinent. There are 13 cuntries n this cntinent.
Nrth America
It is the secnd largest cntinent. Many elephants, giraffes, zebras and lins live there.
It is the smallest cntinent. Yu can find kalas and kangars there.
It is the fifth largest cntinent. The Suth Ple is n this cntinent.
It is the third largest cntinent. Canada, Mexic and the U. S. are the three majr cuntries n this cntinent.
Language pints
1. The earth is a very special planet, and it faces a big prblem（教材P100）
planet n.行星 为可数名词，指环绕恒星运转的星球。e. g. The earth is the nly planet that we knw has life at present. 地球是目前我们所知的唯一有生命存在的行星。
2. In the year 2010, the wrld’s ppulatin was ver 7 billin in ttal. （教材P100）
billin n. 十亿; 千兆billin前有数词修饰时，billin不能用复数形式。billins f意为“数十亿的”，表示不确定的数量。e. g. We want tw billin. 我们想要20 亿。There are billins f stars in the sky. 天上有数十亿的星星。
ttal n. 总计; 总数 adj. 总的; 总计的e. g. A ttal f twenty letters were received last mnth. 上个月共收到20 封信。Yu can chse fur ut f the ttal number. 你可以从总数中选出四个。The prblem is hw much the ttal payment is. 问题是要支付的总额是多少。In ttal ver 1, 000 peple attended the cnference. 共计一千多人参加了这个会议。
3. It is increasing very quickly.（教材P100）
increase v. 增加; 增大 也可作名词。反义词为decrease。常用短语n the increase “正在增加；不断增长”。e. g. These cases are n the increase. 这些案件在不断增加。His pwer increased. 他的权力加强了。
辨析：increase by 与increase t① increase by ＋倍数或百分数，表示“增加了……倍或百分之……”。② increase t＋具体增长后的数字，表示“增加到了……”
The ppulatin f this city has increased by 5 percent. 这个城市的人口增长了5%。Our cal utput has increased t 6 millin tns this year. 我们今年的煤产量增加到了六百万吨。
4. We can’t live in water, and nly abut ne third f ur planet is land. （教材P100）
ne third 三分之一分数表达法: 分子用基数词, 分母用序数词。分子如果大于1, 分母用复数形式。
注意: 二分之一不能说a/ne secnd, 而要说 a/ne half; 四分之一和四分之三常用a quarter 和 three quarters 表示。
当“分数＋f+名词”结构作主语时，谓语动词的单复数取决于f后面的名词。名词为可数名词复数，谓语动词用复数；名词为不可数名词，谓语动词用单数。
e. g. Tw thirds f the students in ur class are girls. 我们班三分之二的学生是女生。Three quarters f the infrmatin is true. 四分之三的信息是真实的。
5. Antarctica is cvered with snw and ice all year rund.（教材P100）
be cvered with 被……覆盖主动结构为：(用……盖住……)e. g. Our garden is cvered with grass and flwers. 我们的花园被花草覆盖着。Please cver this desk with a clth. 请用一块布盖住这张课桌。
6. It must be treated well fr ur children and fr ur children’s children, t!
情态动词的被动语态本句中 must be treated 是含情态动词的被动语态, 其结构为“情态动词(shuld, must, may, can, culd 等) ＋ be ＋动词的过去分词”。
treat v. 对待; 看待 常用结构：treat sb. as... 把某人看作……treat/regard sb. with...以……对待某人e. g. They treat the dg as a member f their family. 他们把狗视作家庭的一员。She treats every child with kindness. 她用善心对待每个孩子。
一、根据汉语或首字母提示，完成单词
1. The biggest cean in the wrld is the P_______Ocean.2. Almst everyne knws the e_____ ges arund the sun.3. Deserts may cver three _________ (百分比) f the earth’s surface.4. The ppulatin f the wrld is __________ (增长) quickly.5. Hainan is the secnd-largest _________ (岛屿) in China.6. After half a mnth at sea, we saw ____(陆地).
二、用适当的介词填空。
1. _____ 2025, the wrld will have 7.8 billin peple.2. Milk is gd _________ children.3. The Nile River is the lngest river _________Africa.4. Which part _________ the wrld d yu live in?5. _________ the surface f the earth, there is sme dry land.
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