冀教版八年级英语下Lesson_50.课件

短语
• 1.The world ‘s population was about six billion • 2.scientists predict • 3.People live on land . • 4.There are seven continents in the world. • 5.There are four main oceans in the world.. • 6.the world’s biggest island • 7.the longest river • 8.Not all land is good for people.
population 人口,为集合名词,常被看作一个整体. 无复数形式.谓语动词用单数.表示某国某城市有多 少人口时,一般说:has a population of...或者 the population of…is…
eg.The town has a population of 20000.=The population of the town is 20000. 表示人口”多”或”少”时,一般用large或small来 表示,而不用many或few.
Step 4
Practice makes perfect! 熟 能 生 巧
Let’s do the exercises:
I. Choose the best answers:
(B) 1. ____ of the students are from the countryside.
A. Third quarter
be good for be made up of
对……有好处
组成
教学反思
• 通过这节课，我学会了什么？ • 学过本节课我有哪些不足？ • 通过这节课有待提高什么？
1. Learn the words in Lesson 51 by heart. 2. Read the text in Lesson 51 and underline the useful phrases.
longest 4. The Nile River is the _______ river in Africa.
5. Antarctica is the world’s driest (最干旱的) _____ con
击（每题1分）
1. ____ food ___ good for people. A. Not at all, are B. All not; is C. Not all; is D. All not; are 2. ____ of the students are from the countryside. A. Third quarter B. Three quarters C. Three quarter D. Third quarters
单词
1. continent 2. increase 3. land 4. Europe 5.America 6.Antarctica 7. ocean 8.Pacific 9.the Pacific Ocean 10.Atlantic 11. the Atlantic Ocean 12.Indian 13.the Indian Ocean 14.Arctic 15.the Arctic Ocean 16.earth 17. surface 18. percent 19. island 20. Greenland 21. northeast 22. river 23. Nile
闪
亮
登
场（每题1分）
into 1. She made the material ____(做成) a dress.
2. The world is made up of (由……组成) _____________ many different kinds of places.
3. The sea covers almostthree_______ (四分之 ____ fourths 三) of the earth's surface.
Step 3
探究案
• 学习要求，独学，对学，群学。 • 语法（见导学案） 1.Study by yourselves 4 minutes 2.Study with groups 6 minutes
Reading
• Read the dialogue aloud. Catch the main idea. • Read the dialogue again. Learn the main points and find out the difficult points. • Have a discussion with your partner.
C. Three quarter
B. Three quarters
D. Third quarters
(A) 2.A quarter of the students____let their books at home. A. are B. is C. have D. has (B) 3.The Yellow River is ______ in China. A. second longest river B. the second longest river C. the second longest rivers D. the longest river
II . Fill in the blanks.
by the weekend 1. They will be there _________________ ( 在周末以前）.
2. _______________ (四分之三) of the apples Three quarters are green. is good for 3. Milk _____________ (对……有益）your health. is made up of 4. The world _____________ (由……组成） many different kinds of places.
3. Having an apple a day is good ___ your
health.
A. at
B. in
C. for
D. with
4. There are ____ of things in the
supermarket.
A. a kind B. kind
C. different
D. different kinds
Europe
Asia
The continents of the world
Astralia
Africa South America
Antarctica
The Arctic Ocean The Pacific Ocean
the oceans of the world
the Atlantic Ocean the Indian Ocean
eg. China is a country with a large population.(中 国是一个人口众多的国家.)
提问有多少人口时,用what而不用 how many或how much. 询问人口 有两种方法：
What’s the population of...? how many people are there in...? eg. 上海有多少人? What’s the population of Shanghai ? ______________________________ How many people are there in Shanghai?_________________________
1.How many people are there in the world?
Six billion
2.Where do all the people live? On land 3.How much of the world is land? About one-third of the world is land
Studying Aims
1.知识目标：掌握本课重点单词 2.能力目标：强化训练并提高学生的听、说、 读、写的能力，锻炼自主学习、小组互助 合作能力。 3.情感目标: 了解世界。
Step 1
预习案
Check the answers and read them aloud
land
ocean
North America