初中英语外研版 (新标准)八年级上册Unit 1 The population of China is about 1.37 billion.课文内容ppt课件

Module 9 Population

Unit 1 The world’s population was about 7.8 billion in 2020.

【教学目标】

        Knowledge objective

1. To understand the conversation in relation to population.
2. To get specific information from the listening material.
3. To talk about and understand numbers.

        Ability objective

To make a short passage or a dialogue with the points in this unit

        Moral objective

To get the student to know how to make a teamwork

【教学重点】

New words and expressions

To learn the grammar knowledge of big numbers

【教学难点】

To grasp the phrases and important sentences

【教学方法】

PWP method, task-based method and interactive approach

【教学手段】

A tape recorder, multimedia and some pictures

【教学过程】

Teaching Procedures:

Step 1 Lead-in   

Ss look at the pictures and fill in the blanks.

Step 2 Consolidate new words

Look and say. The teacher shows the pictures of new words and let the students say the new words as quickly as possible.

Step 3 Look at the picture and talk about the picture

Let Ss look at the picture and use the words in the box to talk in pairs.

Step 4 Listening

Listen to Activity 2 and choose the best answer.

1) What is the population of New York?

  a) About 17 million.

  b) About 30 million.

  c) About 9 million.

2) What is the population of Tokyo?

  a) About 4 million.    

  b) About 14 million.

  c) About 28 million.

Step 5 Listen to the dialogue and answer the questions

1. What is Tony doing?

2. What may cause when population increase too fast?

3. What about countries with slow-growing populations?

Step 6 Listen to the dialogue and answer the questions

Let Ss listen to the dialogue and answer the three questions. Then check in groups.

Step 7 Read the dialogue and answer the questions

1. What was the population of the world in 2020?

2. What will the population of the world in 2030?

3. What about the population of India in 2030?

Step 8 Now complete the notes

Population of the world in 2020: ______________________________________

Population of the world in 2030: ______________________________________

Population of India in 2030: __________________________________________

Step 9 Choose the correct answer

Let Ss choose the correct answers and show in groups.

1) Birth happens at the start / at the end of life.

2) Huge means large / small.

3) An increase in population means more / fewer people.

4) Hang on a minute means waiting for a short time / a long time.

5) Making notes means writing a long passage / a few words.

6) A problem is something easy / difficult.

7) A report is a long piece of writing / a few words.

8) A billion is a hundred / a thousand million.

Step 10 Everyday English

I can’t believe it!

Hang on a minute!

Great!

Step 11 Listen and repeat

Listen and repeat the numbers. Get the students to learn how to read the numbers: thousand, billion, and million.

Listen and repeat.

8,742          

eight thousand, seven hundred and forty-two

2,463,128

two million, four hundred and sixty-three thousand, one hundred and twenty-eight

1,370,000,000

one billion, three hundred and seventy million

2,000,030,000

two billion and thirty thousand

Step 12 Prepare a talk on the world’s population. Think about the questions.

1.Work in groups and discuss your answers.

•         What is the population of the world?

•         How fast is the world’s population growing?

•         What are the problems of fast-growing and slow-growing populations?

•         What else do you know about the world’s population?

2.Work in pairs and give your talk.

Step 13 Language points

Let Ss master the main points of the passage.

1)     I’m preparing I’m preparing a report called “The world’s population”.

   prepare用作动词，意为“准备”，后面常跟名词、代词、不定式作宾语。

   prepare … for …   为……准备……

   e.g. He is preparing a dinner for his friends.

      他正在为他的朋友准备晚饭。

   prepare后还可以接间接宾语，即prepare sb. sth.，相当于prepare sth. for sb.，意为“为某人   

   准备某事（物）”。

2) It said the world’s population was about 7.8 billion in 2020.

  billion(十亿), million (百万), thousand (千)都是数字单位。

前面有具体数字修饰时，用单数形式；billion还常用于固定结构billions of, 表示“数以十亿计的”。与此用法类似的词还有hundred, thousand, million等。

e.g. The man is very rich. He has five billion.

      那个男人非常富有。他拥有50亿。

      There are billions of books in the big library.  大图书馆有数以亿计的图书。

3) I can’t believe it!

   表示“简直难以置信”。表示一种惊讶。

4) Hang on a minute!

  hang on 通常用来表示让某人等一下, 相当于hold on。

  e.g. Hang on! I’ll be back in a minute.

     稍等！我马上回来。

5) When populations increase too fast, it can cause problems, such as too much traffic and noise.  

too much后面加不可数名词，too many后面加可数名词，都表示“太多的”。

  e.g. There are too many books in the bookshop.      

     There is too much water on the ground.   

Step 14 Grammar

掌握数字的用法。

朗读时，将每三位数看做一个单位，依次为billion，million，thousand。每个单位按照百、十、个位向下读，其中百位到十位之间要加入 and。

e.g. 729 ：seven hundred and twenty nine.

   6,500,431,729： six billion five hundred million four hundred and thirty one thousand seven hundred and twenty nine.

Step 15 Summary

重点短语

make notes  prepare for    too much    hang on   take place

数字的读法

Step 16 Exercises

Do some exercises about the main points.

1) -What are you preparing _____ your party?

  -I’m thinking about who I’ll invite.

   A. at           B. for                C. with

2) There are _____ people in the little room.

   A. so much    B. so many    C. very much

3) - Could you give me some advice about learning English?

  - Certainly. Why not ____ in class?

   A. make books      B. make notes    C.  making notes

4) - The school bus is coming.

  - _____. I’ll come in a minute.

    A. Hang on       B. On earth         C. Once or twice

5) Population _____ is a big problem in the world.

   A. increase      B. describe      C. protect

6) ____ trees have been planted near  here, so the air is very fresh.

   A. Two hundreds        B. Hundred of

   C. Hundreds of         D. Hundreds

Step 17 Homework

编写一个报告，说明世界的人口增长问题。