仁爱版九年级英语上册《Unit 2 Saving the earth Topic 1》讲学稿(第4课时)

《Unit 2 Saving the earth Topic 1》讲学稿（第4课时）执笔审核教研组长授课时间第6周周班级姓名

课题：U nit2-Topic1 Pollution has caused too many problems . Section D P 33-34 第4课时

学习目标：

1、总结一般过去时和现在完成时的区别；复习本话题的重点表达法。

2、了解各种污染带来的危害，树立环保意识，爱护环境，保护地球。

第一段：【短课导学】模块一：自主学习

学习内容摘记Step1. Introduction (PPT)

1、Review the simple past and present perfect .

2、Learn some kinds of pollution and new words.

3、Now list what you have learnt in this topic with your group members, and then finish t he Grammar and Functions.

Step2.听读---感悟短文

1、Pollution is harmful to people’s health. Now, please read 1a as quickly as you can and try to get the

main ide a of this passage. What is the passage about?

2、Please listen to 1a carefully and complete the passage .

There are many __________ of pollution around u s. They are ______ for our health in many ways.

Air pollution causes _____ eyes and __________ problems. ______ makes our environment dirty.

Soil pollution ________ the soil and _______ unhealthy food. Noise pollution makes people ______

and causes high blood pressure. Light pollution is bad for _____ and causes some kinds of

__________.

With less pollution, our planet will become _______ and our health will be better. Let’s be

greener people.

Step3.品读---读出理解

一、再次阅读1a课文，请把下列词组、句型，在课文中划出。

1、我们周围许多种类的污染

2、be bad for = = 对...有害

3、眼睛痛

4、呼吸困难

5、with the increase in population and the development of industry. 随着人口的增长和工业的发展。

6、使我们的环境很脏

7、in the fields.在田野里8、太多的噪音

9、在强光下工作

二、语言点梳理

1、请看：Burning gas, oil and coal creates air pollution.燃烧煤气、石油和煤炭造成空气污染。

【归纳】burning 在句中是________ 作主语，谓语动词用_________（单数、复数）.

【练一练】1. __________ is good exercise. (wal k)

2、请看：With the increase in population and the development of industry, litter is everywhere.

随着人口的增长和工业的发展，垃圾也到处都是。

【归纳】1)with表示伴随，引导的介词短语在句中作状语，其反义词为________.

【练一练】1. _______ _______ ______, the tiger jumped into the river.

说着这些话，老虎跳进了河里。

【链接】①She cut the apple with a knife. ( She uses a knife to cut the apple.) 她用刀子切苹果。

“with + 某种工具”表示“”=

2)表达“工业；产业”的单词是：_______________，是什么词性？________；

表示“重/轻工业”的短语是___________/ light industry

第二段：【长课导学】模块二：交流研讨

研讨内容摘记

内容一：小组成员之间交换讲学稿，看看同学语言点梳理的答案及与你的有什么不同。学习组长

组织，集中讨论解决，对学过程中未完成的问题，共同分享学习成果。

内容二：组长组织，全组同学合作，完成下题。

1、Please read the passage carefully and complete the table on Page 34. You can discuss the answers

with your partner.

2、完成1b on P34.

模块三：巩固内化

学习任务摘记任务一：Fill in the blanks with the correct forms of the given words.

1）The man working in a _________ factory goes deaf because of the loud _______.(noise / noisy)

2）Burning coal can _______ the air, and we call it air _______. (pollute / pollution)

3）Using too many chemicals in the land can cause ________food and it’s bad for people’s ________.

(health / healthy / unhealthy)

4）Strong light is _______ to our eyes and does great _______ our body. (harm / harmful)

5）Mrs. Zhou can hardly ________ because of the bad air. And she often coughs day and night, out of

________. (breath / breathe)

T: OK, now let’s check the answer.