新冀教版八年級下冊英語Lesson 38 The World Is a Big Place課件

1、Unit 7 Know Our WorldLesson 38 The World Is a Big Place學(xué)習(xí)目標(biāo)Learn more about the worlds geography.Master the words and expressions of the continents and oceans in English.思 考新課導(dǎo)入思 考All of us have studied geography. Can you say the names of the continents and oceans in the world?新課導(dǎo)入思 考新課講解THINK ABOUT

2、 ITHow many continents are there in the world? What are they?What do you know about the place where you live?How many continents and oceans does the world have?Can you point them out?新課講解The earth is a very special pla , and it faces a big problem. In the year 2010, the worlds population was over 7

3、billion in total. It is increasing very quickly. By 2025, the world may have about 8 billion people. And by 2050, the worlds population may reach 9 billion.There is another problem. People cant live everywhere on the earth. We cant live in water, and only about one third of our pla is land. But part

4、s of this land are very dry. These dry places are called deserts. Some areas have very high mountains. Others have a lot of snow and ice. It is not easy to live in those places.新課講解There are seven continents: Asia, Africa, Australia, Antarctica, Europe, North America and South America. Antarctica is

5、 covered with snow and ice all year round. Luckily, people can live on the other six continents. On these continents, there are green forests, fresh water and rich lands.Oceans cover two thirds of the earths surface. The earth has only one big ocean, but we use these names for its different parts: t

6、he Pacific Ocean, the Indian Ocean, the Atlantic Ocean and the Arctic Ocean. The Pacific Ocean is the largest one.The earth is our home now, and it will be our home in the future. It must be treated well for our children and for our childrens children, too！新課講解Language point 1The earth is a very spe

7、cial pla , and it faces a big problem.pla / plnt/ n. 行星pla 為可數(shù)名詞，指環(huán)繞恒星運(yùn)轉(zhuǎn)的星球。e.g. The earth is the only pla that we know has life at present.地球是目前我們所知的唯一有生命存在的行星。新課講解Language point 2In the year 2010, the worlds population was over 7 billion in total.billion / bln/ n十億；千兆billion前有數(shù)詞修飾時(shí)，billion 不能用復(fù)數(shù)形式

8、。e.g. We want two billion. 我們想要20 億。billions of意為“數(shù)十億的”，表示不確定的數(shù)量。e.g. There are billions of stars in the sky.天上有數(shù)十億的星星。新課講解Language point 3It is increasing very quickly.increase既可作及物動詞也可作不及物動詞，其反義詞為decrease。也可作名詞，常用短語on the increase“正在增加；不斷增長”。e.g. These cases are on the increase. 這些案件在不斷增加。e.g. His

9、 power increased. 他的權(quán)利加強(qiáng)了。increase/nkris/v.增加；增大新課講解Language point 4Antarctica is covered with snow and ice all year round.主動結(jié)構(gòu)為：cover.with.(用蓋住)e.g. Please cover this desk with a cloth. 請用布蓋住這張課桌。be covered with 被覆蓋e.g. Our garden is covered with grass and flowers.我們的花園被花草覆蓋著。新課講解1Read the lesson a

10、nd match each paragraph with its main idea.Lets Do It !Paragraph 1 a.Six of the seven continents are good for people to live on.Paragraph 2 b.We should treat the earth well.Paragraph 3 c.An increasing population is a big problem for the earth.Paragraph 4 d.Two thirds of the earth is covered with oce

11、ans.Paragraph 5 e.People cannot live everywhere on the earth.新課講解2 Fill in the blanks with the correct forms of the words in the box.increase dry surface billion total1The number of swimmers here is _ quickly because its very hot these days.2The school has a _ of 900 students.3I think it may be the

12、_ season of the year.4The _ of our body is skin. It protects us.5How many _ of people are there in the world now?increasingtotaldriestsurfacebillions當(dāng)堂小練一、詞語運(yùn)用1. The s_ of the lake is quite still. 2. The t_ cost will be 130 dollars. 3. The earth is a p_and it goes around the sun. 4. They e from Indi

13、a, and they are I_. 5. The number of wild pandas has i_ by around 17% in the last ten years. urfaceotalla ndiansncreased當(dāng)堂小練二、連詞成句1. pla , earth, is, special, the, a_. 2. in, we, live, water, cant_. 3. deserts, dry, called, these, places, are_. 4. must, earth, well, the, treated, be_. 5. cover, surface, thirds, the, oceans, two, earths, of_. The earth is a special pla We cant live in waterThese dry places are called desertsThe earth must be treated wellOceans cover two thirds of the earths surface課堂小結(jié)重點(diǎn)單詞：increase,pla ,b