英语——《All these problems are very serious》教学设计

英语——《All these problems are very serious》教学设计

《All these problems are very serious》教学设计

东方八所中学  英语学科  任喜娜

The main activity is 1a. 本课重点活动是1a。

Ⅰ. Teaching aims and demands 教学目标

1. Learn some new words and phrases:

sand, cut down, change into, prevent, prevent … from, human being, although, law, turn off

2. Learn some useful sentences:

  (1) Trees can stop the wind from blowing the earth away.

  (2) Pass laws against water pollution.

  (3) Remember to turn the tap off when you leave.

3. Learn to talk about pollution and its harm.

Ⅱ. Teaching aids 教具

幻灯片/录音机/图片

Ⅲ. Five-finger Teaching Plan 五指教学方案

Step 1  Review 第一步  复习(时间:3分钟)

复习污染的类型及其危害，教师创设一个空气污染的情境，引入本课话题。

1. (教师收集一些有关污染的图片如noise pollution, air pollution ,water pollution，让学生说出它们分别属于哪种污染，有何危害并提出解决建议)

T:   What kind of pollution is it?

Ss: It is noise pollution.

T:   What harm can it cause?

S₁:  It can disturb others and make people feel uncomfortable and unpleasant.

S₂:  It does great harm to people’s hearing. It can even make people sick or deaf.

T:   Good. How should we solve this problem?

S₃:  Don’t always listen to loud pop music.

S₄:  Don’t make a loud noice in public.

Step 2  Presentation 第二步  呈现(时间:20分钟)

通过多媒体呈现1c中的图片，创造情景对话，呈现新单词和词组，学习1a。

1. (呈现1c中的图片，学习新词汇)

T:   Look at Picture2 in1c.

T:   (指着第二幅图。) Is the scenery beautiful?

Ss: Yes.

T:   OK. Let’s look at Picture 4. Is it beautiful?

Ss: No.

T:   What has happened to the forest?

Ss: It has gone.

T:   Yes. People have cut down too many trees.

(要求学生掌握)

T:   Please look at Picture 1. A lot of earth has been washed away. Why?

Ss: Because people have cut down …(教师引导学生回答)

T:   That’s right. Trees can prevent the water from washing the earth away.

(要求学生掌握。)

T:   Let’s look at Picture 3. Oh, my goodness! The forest has changed into desert.

(要求学生掌握短语change into；理解desert)

T:   Please look at Picture 5. What’s the weather like?

Ss: It’s bad.

T:   I agree with you. The wind is blowing strongly with lots of sand. We call it sandstorm.

(学生掌握sand；了解sandstorm)

T:   Is cutting down trees good or bad for us?

Ss: It’s bad.

T:   Very good. It’s harmful not only to human beings, but also to animals and plants.

(要求学生理解)

T:   So what can we do to protect the environment? Discuss in groups of four.

(给学生两分钟，让他们讨论)

S₁:  Plant more trees.

S₂:  Stop cutting down trees.

S₃:  …

T:   Good idea. Although we have done a lot to protect the environment, it’s not enough yet. Let’s work harder.

(要求学生掌握)

2. (让学生小组讨论完成1c)

T: Do you know the relations between trees, human beings and sandstorms? Do you know how sandstorms come into being? Now please look at the pictures in1cand number them.

  (核对答案)

3. (听1a录音回答问题)

T:   Just now we talked about how sandstorms come into being. Now listen to1a, and answer the questions on the screen.

  (核对答案。)

4. (再听1a录音选出最佳选项)

(      )   1.What is the weather like ?  

             A. It’s sunny.   B. It’s rainy.   C. It’s windy.

(      ) 2.What cause these sandstorms?

             A.People use chemicals too much in the fields.

             B.People have cut down too many trees .

             C.People pour waste water into rivers.

(      ) 3. As a result, a lot of rich land has changed into           .

                  A. desert     B. river    C. forests

(      ) 4. Cutting down trees is harmful to               .

             A.human beings                B.plants

             C.human beings ,animals and plants

(核对答案。)

  4. (再听1a录音填空)                      

                         Trees’ functions

A. Trees can           the wind                       the earth away .

B. A lot of            can be               by forests .

C. Trees can            the water                    the earth away .

(核对答案。)

Step 3  Consolidation 第三步  巩固(时间:5分钟)

教师放1a录音，学生表演朗读，完成1b。让学生明白树木在环境保护中的重要性，增强环保意识。

1. (让学生跟读1a录音，并注意语音语调)

T:      Now, please read after the tape. Pay attention to the pronunciation and intonation.

2. (让学生三人一组表演这个对话，稍后检查活动成果。)

T:      Please work in groups of three. After a while, I’ll ask several groups to act out this dialog.

G₁: …

G₂: …

Step 4  Practice 第四步  练习(时间:7分钟)

1、讲解语法点：Stop/prevent +sb./sth.+(from) doing sth.阻止某人或某物做某事

Lucy’s parents stop her (from) playing computer games .露西的父母阻止她玩游戏 。

2、让学生用着个语法点造句

S1…

S2…

S3…

3、Retell 1a

Here are some key words for students.

blow  strongly ,…cause … sandstorms ,cut down , change into , stop…from , prevent …from , be harmful to ,

Step 5  Project 第五步  综合探究活动(时间:5分钟)

Discussion

How to prevent the sandstorm?

Here are some ways:

1. Pass laws against air pollution.

2. Don’t cut down too many trees and     plant more trees .

3. We should try our best to protect our environment.

     ...

Summary

New words and phrases:

sand ,  sandstorm ,  cut down ,   change into ,   desert ,   prevent ,   prevent …from ,   human being ,  although ,   law ,   turn off ,  tap

Useful expressions

◆Pass laws against water pollution.

◆Trees can stop the wind from blowing the earth away.

◆Remember to turn the tap off when you leave.

Homework

Write a short passage with the title “How to prevent the sandstorm?”