冀教版（2024）八年級(jí)下冊(cè)Unit 7 Know Our WorldLesson 38 The World Is a Big Place優(yōu)秀課件ppt-課件下載-教習(xí)網(wǎng)

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，說明例：He pinted ut the dangers f driving alne. 他指出了單獨(dú)開車的危險(xiǎn)性。 Can yu pint ut the mistakes in this picture？你能指出這張圖片中的錯(cuò)誤嗎？【拓展】pint at指著
Language pints
2. The earth is a very special planet, and it faces a big prblem.地球是一顆很特殊的行星，它（現(xiàn)在）面臨著一個(gè)大問題。face v. 面臨；面對(duì)此處作及物動(dòng)詞，后面可接人或表示困難、形勢(shì)、問題等的抽象名詞或動(dòng)名詞作賓語。例: Yu shuld face the challenge bravely. 你應(yīng)該勇敢地面對(duì)挑戰(zhàn)。
3. In the year 2010, the wrld’s ppulatin was ver 7 billin in ttal.　在2010年，世界人口數(shù)量總計(jì)超過七十億。(1) billin n．十億。其復(fù)數(shù)形式為billins。當(dāng)其前有具體的數(shù)詞時(shí)，用單數(shù)形式，表示確數(shù)；當(dāng)其前沒有數(shù)詞或由sme, several, many等詞修飾時(shí)，用復(fù)數(shù)形式，且其后要接介詞f，表示概數(shù)。類似用法的詞還有hundred(百), thusand(千), millin(百萬)等。
例: This cmpany earns tw billin dllars a year. 這家公司一年賺20億美元。 Billins f stars twinkled in the sky. 無數(shù)的星星在天空中閃爍。(2) in ttal意為“總計(jì)，合計(jì)，總共”, 相當(dāng)于in all。 a ttal f … 總數(shù)為…… 例: His sister has three hundred stamps in ttal. 他的姐姐總共有三百張郵票。 Our class has a ttal f 60 students.我們班總共有60人。
4. It is increasing very quickly.它正在非常迅速地增長(zhǎng)。increase v．增加；增大。例：The number f the students in ur schl is increasing. 我們學(xué)校學(xué)生的數(shù)量正在增長(zhǎng)。
5. And by 2050, the wrld’s ppulatin may reach 9 billin.并且到2050年，世界人口可能會(huì)達(dá)到九十億。by 2025 意為“到2025年為止”。by在這里意為“到……為止”。例:Will yu finish it by 10:00 p.m.? 晚上十點(diǎn)前你能完成它嗎？
6. We can’t live in water, and nly abut ne third f ur planet is land.我們不能住在水里，并且我們的地球只有大約三分之一的地方是陸地。ne third是分?jǐn)?shù)，意思是“三分之一”。分?jǐn)?shù)表達(dá)法：①分子用基數(shù)詞，分母用序數(shù)詞；當(dāng)分子大于1的時(shí)候，分母使用復(fù)數(shù)形式。例：ne fifth 五分之一；ne furth 四分之一；three eighths 八分之三。
②特殊表達(dá)法。如：a half 二分之一；a quarter 四分之一；three quarters 四分之三。注意：當(dāng)分?jǐn)?shù)在句中作主語的時(shí)候，若后面的名詞是復(fù)數(shù)，則謂語動(dòng)詞用復(fù)數(shù)；若后面的名詞是單數(shù)或不可數(shù)名詞，則謂語動(dòng)詞用單數(shù)。
7. Antarctica is cvered with snw and ice all year rund. 南極洲終年被冰雪覆蓋。(1) be cvered with 被……覆蓋。其主動(dòng)結(jié)構(gòu)為：cver…with…(用……蓋住……)例：Our garden is cvered with grass and flwers. 我們的花園被花草覆蓋著。 Please cver this desk with clth. 請(qǐng)用布蓋住這張課桌。(2) all (the) year rund 全年，整年。
它相當(dāng)于all ver the year。例：It's pen all year rund t visitrs.它全年都對(duì)游客開放。8. The earth is ur hme nw，and it will be ur hme in the future.現(xiàn)在地球是我們的家，在將來它仍是我們的家。辨析： in the future與in future ① in the future 將來，未來。它所表示的將來是指以后的將來，并不強(qiáng)調(diào)從說話的這一刻開始。　
② in future 今后。它強(qiáng)調(diào)從說話時(shí)開始的以后，相當(dāng)于frm nw n。9. It has the highest pint n the earth in the Himalayas.它擁有位于喜馬拉雅山脈上的地球上的最高點(diǎn)。該句運(yùn)用了形容詞的最高級(jí)結(jié)構(gòu)。在三者或三者以上的人或物進(jìn)行比較時(shí)，用最高級(jí)。形容詞的最高級(jí)前面要加定冠詞the，副詞最高級(jí)前面的the可以省略。
在含有最高級(jí)的句子中，常有一個(gè)in/f短語來表示比較范圍。例: I am the tallest in ur class. 我是我們班里個(gè)子最高的。My mvements are the mst graceful f us three. 三個(gè)人中我的動(dòng)作是最優(yōu)雅的。
1. Learn sme new wrds and expressins.2. Review the present perfect tense.3. Master the passive vice.
用所給詞的適當(dāng)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.

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