夏邑县济阳初中九年级英语教学案 课 题：Unit 2 Topic 2 All these problems are very serious. Section B

夏邑县济阳初中九年级英语教学案
课 题：Unit 2 Topic 2 Section B
班级： 学生姓名：
自学——质疑——解疑
（一）学习目标：
1、继续学习不定代词和不定副词的用法。
2、谈论森林和水资源的重要性，培养学生的环保意识。
（二） 自学方法：
1、预习P35___36页的生词和短语。
2、大声朗读1a，找出重点短语及句子。
自测——互查——互教
翻译下列短语
1.What bad weather | ______________ 2.lots of sand _____________
3.cut down ___________ 4. change into _____________________
5.阻止某人/某物做某事，避免某人/某物做某事___________________
6.储存,保留，保存__________________________
7.记得去做某事__________ 8.be harmful to sth.______
展示——反馈——导学
Trees can stop the wind from blowing the earth away .树木能防风固土.
They can also prevent the water from washing the earth away .它们也可以防止水土流失。
Stop /prevent sb./sth.from doing sth .阻止某人/某物做某事，避免某人/某物做某事 如：
Nothing can stop /prevent him from working .
什么事也阻止不了他的工作。
Lucy’s parents tired to stop /prevent her from playing computer games.
露西的父母试图阻止她玩电脑游戏。
And a lot of water can be saved by forests .森林可以储存大量的水。
Save 此处为“储存，保留，保存”的意思。如：
We’ll eat some now and save some for tomorrow .我们现在吃一些，留一些明天吃。
Can be saved 为含有情态动词的被动语态
3．阅读1a,完成1b,1c和2
自测——反馈——点拨
单项选择
( ) 1. Eating too much is ______to your health .
A. useful B. helpful C. harmful D. wonderful
( ) 2. Parents should prevent the children ____-taking medicine by themselves .
A .about B. with C . from D. of
( ) 3. The farmer _____a lot of trees and built a new house .
A .cut down B. cut off C. turned down D .turned off
( ) 4. My hometown has changed _____a new one in the last three years .
A. in B. to C. with D. into
( ) 5._____of us understand what you did ,but we still follow you as usual
A .Not everybody B. Not every C .Not all D .No one .
自测——反馈——点拨
根据所给要求完成句子。
You can’t throw litter everywhere .(改为祈使句)
________ ________ litter everywhere .
2. It was very bad weather last night .(改为感叹句)
_______ ______weather it ______last night .
3. We must do something useful to prevent the factory from pouring waste water into the stream .(同义句转换)
We must do something useful to ______the factory ______pouring waste water into the stream .
4. To cut down trees is harmful to human beings . (同义句转换)
It’s _____ ______human beings _____ _____ ______trees .
5. Each of them has been to the Great Wall.（改为完全否定句）
______ _______ ______ _______been to the Great Wall .
6. We have only one earth .We should look after it.. (同义句转换)
We have only one earth .We should _____ _____ it.
回顾——总结——反思