约1900字。

　　仁爱版九年级英语上册Unit 2
　　Topic 2  All these problems are very serious
　　Section A
　　The main activities are 1a and 2. 本课重点活动是1a和2。
　　Ⅰ. Teaching aims and demands
　　1. Learn a new word and some phrases:
　　as a result, behavior, in the beginning, day by day, die out
　　2. Learn some useful sentences:
　　(1)As a result, air pollution has become a serious problem.
　　(2)Humans have come to realize the importance of protecting animals.
　　3. Learn the indefinite pronoun and adverb:
　　(1) None of us likes pollution.
　　(2) Don’t spit anywhere in public.
　　(3) Everyone should care for wild animals and plant more trees.
　　4. Learn the importance of protecting the environment.
　　Ⅱ. Teaching aids 教具
　　有关污染的和学生不文明行为的教学图片/小黑板/录音机/警示标语
　　Ⅲ. Five-finger Teaching Plan
　　Step 1  Review
　　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，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: How should we solve this problem?
　　S3: Don’t always listen to loud pop music.
　　…
　　(学生可以在教师帮助下回答。)
　　2. (教师创设一个空气污染的情境，引入本课话题。例如：教师一边拍身上的灰尘，一边咳嗽着走进教室，然后描述。)
　　T: It is too dirty and there is too much heavy smotside. I can’t stand it.
　　Ss: Is it air pollution?
　　T: Yes, it is.
　　Step 2  Presentation
　　展示1a的图片，导入新课，呈现本课生词和词组。讲解不定代词和不定副词的用法。教育学生必须保护环境。
　　1. (教师展示1a的图片，导入新课。)