冀教版（2024）八年级下册Unit 7 Know Our WorldLesson 38 The World Is a Big Place优秀课件ppt

这是一份冀教版（2024）八年级下册Unit 7 Know Our WorldLesson 38 The World Is a Big Place优秀课件ppt，共27页。PPT课件主要包含了increasing，total，driest，surface，billions，desert，Greenland，different， covers ， to be 等内容，欢迎下载使用。
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?
increase　　dry　　surface　　billin　　ttal
Langage use
• Hw many cntinents are there in the wrld? What are they?• What d yu knw abut the place where yu live?
Think abut it!
Oceans cver abut three-quarters f the earth’s surface.
Deserts cver twenty percent f the earth’s surface.
What’s the wrld’s biggest island?
The wrld’s biggest island is Greenland. Greenland is nrtheast f Canada.
Listen t the tape and yu need t pay attentin t yur prnunciatin.
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.
Read and match
Match the seven cntinents with their crrect descriptins.
It is the biggest cntinent. It has the highest pint n the earth in the Himalayas.
It is the secnd largest cntinent. Many elephants, giraffes, zebras and lins live there.
It is the third largest cntinent. Canada, Mexic and the U. S. are the three majr cuntries n this cntinent.
It is the furth largest cntinent. There are 13 cuntries n this cntinent.
It is the fifth largest cntinent. The Suth Ple is n this cntinent.
It is the sixth largest cntinent. It is a gd place fr peple t travel t.
It is the smallest cntinent. Yu can find kalas and kangars there.
Suth America
Nrth America
1. Can yu pint them ut? pint ut指出，说明例：He pinted ut the dangers f driving alne. 他指出了单独开车的危险性。 Can yu pint ut the mistakes in this picture？ 你能指出这张图片中的错误吗？【拓展】pint at指着
Language pints
2. The earth is a very special planet, and it faces a big prblem.地球是一颗很特殊的行星，它（现在）面临着一个大问题。face v. 面临；面对此处作及物动词，后面可接人或表示困难、形势、问题等的抽象名词或动名词作宾语。例: Yu shuld face the challenge bravely. 你应该勇敢地面对挑战。
3. In the year 2010, the wrld’s ppulatin was ver 7 billin in ttal.　在2010年，世界人口数量总计超过七十亿。(1) billin n．十亿。其复数形式为billins。当其前有具体的数词时，用单数形式，表示确数；当其前没有数词或由sme, several, many等词修饰时，用复数形式，且其后要接介词f，表示概数。类似用法的词还有hundred(百), thusand(千), millin(百万)等。
例: This cmpany earns tw billin dllars a year. 这家公司一年赚20亿美元。 Billins f stars twinkled in the sky. 无数的星星在天空中闪烁。(2) in ttal意为“总计，合计，总共”, 相当于in all。 a ttal f … 总数为…… 例: His sister has three hundred stamps in ttal. 他的姐姐总共有三百张邮票。 Our class has a ttal f 60 students.我们班总共有60人。
4. It is increasing very quickly.它正在非常迅速地增长。increase v．增加；增大。例：The number f the students in ur schl is increasing. 我们学校学生的数量正在增长。
5. And by 2050, the wrld’s ppulatin may reach 9 billin.并且到2050年，世界人口可能会达到九十亿。by 2025 意为“到2025年为止”。by在这里意为“到……为止”。例:Will yu finish it by 10:00 p.m.? 晚上十点前你能完成它吗？
6. We can’t live in water, and nly abut ne third f ur planet is land.我们不能住在水里，并且我们的地球只有大约三分之一的地方是陆地。ne third是分数，意思是“三分之一”。分数表达法：①分子用基数词，分母用序数词；当分子大于1的时候，分母使用复数形式。例：ne fifth 五分之一；ne furth 四分之一；three eighths 八分之三。
②特殊表达法。如：a half 二分之一；a quarter 四分之一；three quarters 四分之三。注意：当分数在句中作主语的时候，若后面的名词是复数，则谓语动词用复数；若后面的名词是单数或不可数名词，则谓语动词用单数。
7. Antarctica is cvered with snw and ice all year rund. 南极洲终年被冰雪覆盖。(1) be cvered with 被……覆盖。 其主动结构为：cver…with…(用……盖住……)例：Our garden is cvered with grass and flwers. 我们的花园被花草覆盖着。 Please cver this desk with clth. 请用布盖住这张课桌。(2) all (the) year rund 全年，整年。
它相当于all ver the year。 例：It's pen all year rund t visitrs.它全年都对游客开放。8. The earth is ur hme nw，and it will be ur hme in the future.现在地球是我们的家，在将来它仍是我们的家。辨析： in the future与in future ① in the future 将来，未来。它所表示的将来是指以后的将来，并不强调从说话的这一刻开始。 　
② in future 今后。它强调从说话时开始的以后，相当于frm nw n。9. It has the highest pint n the earth in the Himalayas.它拥有位于喜马拉雅山脉上的地球上的最高点。该句运用了形容词的最高级结构。在三者或三者以上的人或物进行比较时，用最高级。形容词的最高级前面要加定冠词the，副词最高级前面的the可以省略。
在含有最高级的句子中，常有一个in/f短语来表示比较范围。例: I am the tallest in ur class. 我是我们班里个子最高的。My mvements are the mst graceful f us three. 三个人中我的动作是最优雅的。
1. Learn sme new wrds and expressins.2. Review the present perfect tense.3. Master the passive vice.
用所给词的适当形式填空1. This bk is________(difference) frm that ne. 2. The cntinent________(cver) mre than 44 millin square kilmeters.3. Tell him________(be) quiet in the reading rm. 4. Which is the wrld’s________(tw) smallest cntinent? 5. He________ (say) it’s gd fr yu.
1. Recite the wrds and phrases in this lessn.2. Cmplete the related exercises.3. Preview next lessn.