初二英语同课异构U4T1SA教案

Unit 4 Our World

Topic 1 Plants and animals are important to us.

Section A

Step 1 Review 第一步 复习(时间:7分钟)

通过复习动物名称导入本课生词及形容词的比较级。 1. (利用图片，复习动物名称，引出新词，导入新课。)

(教师出示猫、狗、兔子、牛、马、鸡、羊、鹅等的图片。) T: What’s this in English? Ss: It’s a cat/dog/rabbit … T: And what’s this?

(如果学生们不会用英语说，教师可示范并领读。) (板书并要求学生掌握。)

cow, horse, hen,

sheep,

goose(geese)

T: Do you like these animals? Ss: Yes. / Of course.

T: Where can you see them? S1: In the zoo. S2: On the farm.

T: (教师教学countryside并板书，要求学生掌握。)

countryside

2. (教师引导学生比较城市与农村，并帮助学生说出一些含比较级的句子。)

T: We can also see these animals in the city. Do you like the countryside or the city? Why? S3: I like the city, because the roads are wider, and the buildings are higher. S4(板书并要求学生掌握sky, nature, clear；理解beauty。)

sky, clear,

beauty,

nature

(教师引导学生观察wider, higher, fresher, bluer, greener的变化规则并适当讲解形容词比较级的变化方式。)

Step 2 Presentation 第二步 呈现(时间:5分钟)

通过学习1a对话及对其内容的复述，让学生体会形容词的比较级的用法。

1. (让学生看1a挂图，观察人物，猜测他们之间的对话内容。听1a录音，回答问题。) T: Look at the picture. Michael and Wang Wei are talking about life in the countryside. Now listen to the tape and try to answer the following questions: Who likes the countryside? Why?

(核对答案。)

2. (再放1a录音，让学生跟读1a，注意语音语调。)

T: Listen to 1a and read after the tape. Pay attention to the pronunciation and intonation.

Step 3 Consolidation 第三步 巩固(时间:10分钟)

通过对1a的朗读及1b复述，让学生理解形容词比较级的用法。 1. (分角色朗读课文。)

T: Now I’ll divide the class into two groups. Group A acts as Michael, and Group B acts as Wang Wei. Then change the roles. 2. (根据1a，完成1b。)

T: Now finish 1b according to 1a. (核对答案。)

3. (依据关键词复述1b，并根据1b内容绘制一幅乡村图。)

T: Wang Wei likes countryside very much. Why? Can you help him describe the countryside? The following words can help you.

fresher, bluer, greener, clearer, quieter, the

beauties of nature

T: The countryside is very beautiful, can you draw a picture about it? Ss: Yes.

(两分钟后挑选一些同学展示，对画得好的同学给予表扬。)

Step 4 Practice 第四步 练习(时间:15分钟)

通过多媒体呈现2a图片，进一步学习形容词的比较级和最高级。 1. (教师利用幻灯片出示2a，让学生看图听录音理解2a内容，提醒学生注意形容词比较级的用法。)

T: Now look at the picture and listen to 2a. Pay attention to the comparative and superlative

degrees of adjectives.

2. (再放一遍2a录音，让学生跟读并找出对话中表示比较级和最高级的句子。)

T: Listen to 2a again and follow it. Find out the sentences with the comparative and superlative

degrees of adjectives. X k B 1 . c o m

(板书在黑板上，并讲解形容词比较级和最高级的用法） 3. (分角色表演2a对话。) T: Role-play the dialog in 2a.

4. (通过多种方式练习形容词的比较级和最高级的用法，巩固2a，导入并完成2b。) (1)(运用形容词的比较级和最高级仿照例子填空。)

T: We have known something about the comparative and superlative degrees of adjectives. Now look at Picture 1 and fill in the blanks on the small blackboard according to the example.

(核对答案。)

(2)T: Look at Picture 2 and write six sentences with the comparative and superlative degrees of

(核对答案。)

(3)(教师用手指着一名特别瘦的学生，用形容词thin来描述其特征。) (教师板书生词并要求学生掌握。)

thin

(4)(让学生看82页的图，运用形容词的比较级和最高级讨论动物的体态，帮助学生进一步熟练形容词比较级和最高级的用法。完成2b。) T: Now please look at the table in 2b and finish it. (核对答案。)

T: Now please look at the picture on Page 82, and discuss the animals on the farm. Then act as one of the animals on the farm to continue the conversation, using comparative and superlative degrees of adjectives in the table.

(让学生扮演各种动物，用课本82页表格里的形容词描述自己，教师先做示范。) T: I’m a horse. I am the tallest of all. S1: I’m a cow. I think I’m taller than you. S2: … …

Step 5 Project 第五步 探究(时间:8分钟)

通过游戏进一步练习和运用形容词的比较级及最高级，培养学生综合运用语言的能力。 1. (学生分10人一组，做一个调查，找出各组中有多少人喜欢牛、马、鸡、羊、兔、鼠、猪等，并说明喜欢的原因。引导学生运用学过的句型，练习比较级和最高级。教师做示范。) T: Which kind of animal do you like better, cows or horses? S1:I like cows better. T: Why?

S1:Because cows are the biggest and they offer milk to us …

(五分钟后，让小组代表报告本组里有多少人最喜欢某种动物。一个学生在黑板前做记录。) Example:

S2: In our group, three students like dogs best, because they are the bravest on the farm. Two

students like horses best… (教师总结。) 2. Homework:

教师利用多媒体出示当地街道容貌变化较大的两张图片，让学生用所学新词的比较级和最高级写一篇短文。