英语八年级下册Lesson 38 The World Is a Big Place评课课件ppt

这是一份英语八年级下册Lesson 38 The World Is a Big Place评课课件ppt，共22页。PPT课件主要包含了目录contents，学习目标，思 考，新课导入，新课讲解，increasing，total　，driest，surface，billions等内容，欢迎下载使用。
1 学习目标 2 新课导入3 新课讲解 4 当堂小练5 课堂小结
Learn mre abut the wrld’s gegraphy.Master the wrds and expressins f the cntinents and ceans in English.
All f us have studied gegraphy. Can yu say the names f the cntinents and ceans in the wrld?
THINK ABOUT IT·Hw many cntinents are there in the wrld? What are they?·What d yu knw abut the place where yu live?
Hw many cntinents and ceans des the wrld have?Can yu pint them ut?
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！
Language pint 1
The earth is a very special planet, and it faces a big prblem.
planet / plænɪt/ n. 行星
planet 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。
Language pint 2
In the year 2010, the wrld’s ppulatin was ver 7 billin in ttal.
billin / bɪlɪən/ n．十亿；千兆
billin前有数词修饰时，billin 不能用复数形式。e.g. We want tw billin. 我们想要20 亿。
billins f意为“数十亿的”，表示不确定的数量。e.g. There are billins f stars in the sky.天上有数十亿的星星。
Language pint 3
It is increasing very quickly.
increase既可作及物动词也可作不及物动词，其反义词为decrease。也可作名词，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。e.g. His pwer increased.他的权利加强了。
increase/ɪn'kriːs/v.增加；增大
Language pint 4
Antarctica is cvered with snw and ice all year rund.
主动结构为：(用……盖住……)e.g. Please cver this desk with a clth. 请用布盖住这张课桌。
be cvered with 被……覆盖e.g. Our garden is cvered with grass and flwers.我们的花园被花草覆盖着。
Read the lessn and match each paragraph with its main idea.
Let's D It !
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.
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?
1. The s________ f the lake is quite still. 2. The t________ cst will be 130 dllars. 3. The earth is a p________and it ges arund the sun. 4. They cme frm India, and they are I________. 5. The number f wild pandas has i________ by arund 17% in the last ten years.
1. planet, earth, is, special, the, a__________________________________________________. 2. in, we, live, water, can't__________________________________________________.
The earth is a special planet
We can't live in water
3. deserts, dry, called, these, places, are__________________________________________________. 4. must, earth, well, the, treated, be__________________________________________________. 5. cver, surface, thirds, the, ceans, tw, earth's, f__________________________________________________.
These dry places are called deserts
The earth must be treated well
Oceans cver tw thirds f the earth's surface
重点单词：increase,planet ,billin 重点短语：be cvered with,重点句子：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.Antarctica is cvered with snw and ice all year rund.