约1830字。

　　仁爱版九年级英语上册Unit 2
　　Topic 2  All these problems are very serious.
　　Section B
　　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) I couldn’t see anything, and my face hurt while I was walking down the street just now.
　　(2) Pass laws against water pollution.
　　(3) Remember to turn the tap off when you leave.
　　3. Continue to learn the indefinite pronoun and adverb.
　　4. Learn to talt pollution and its harm.
　　Ⅱ. Teaching aids 教具
　　幻灯片/录音机/图片
　　Ⅲ. Five-finger Teaching Plan
　　Step 1  Review
　　通过方格游戏，来复习不定代词和不定副词的用法。
　　(让同桌两人做一个3×3的方格，将上节课Section A中2的10个不定代词(everyone和everybody任选其一)放入方格中。教师事先准备九道练习题，答案就是方格中的九个不定代词。教师将这些习题逐一呈现出来，同桌两人抢圈答案，谁抢到的多谁获胜。在此过程中，教师每呈现一题就要核对一次答案。)
　　(供参考)
　　(表格及习题如下：)
　　none other something
　　everyone everybody nobody anything
　　everywhere anybody others
　　(1) None of us knows how to stop the bad behavior.
　　(2) I knocked on the door but nobody answered.
　　(3) Some of these books are better than others.
　　(4) She was driving the car with one hand and wiping the window with the other.
　　(5) It’s a good car but I am looking for something faster.
　　(6) You can’t believe anything she says.
　　(7) There’re 5 000 people living here and almost everyone/everybody has his/her own car.
　　(8) He’s cleverer than anybody I know.
　　(9) I’ve looked everywhere but I can’t find it.
　　Step 2  Presentation
　　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 these pictures then tell me your feelings. First look at Picture 2.