㈠ 2013人教版初三英语作文教案及练习
一般来说“白化动物”的寿命，通常比正常动物平均寿命短。我们平常看到的白色版动物有两种权情况：
一是，正常的白色动物，其毛色由白色基因决定。物种在进化中，继承各种基因，当环境需要时，就凸现出来，以帮助物种延续，与环境相适应；如北方狼多为白色和灰色，热带多为黄色和斑点色，因为热带几乎没有白色环境，白毛动物极难生存；但是白色基因是存在的。
二是，“白化病”动物。这种病存在于各种动物中。白化病是一种常见的皮肤及其附属器官黑色素缺乏所引起的疾病，由于先天性缺乏酪氨酸酶，或酪氨酸酶功能减退，黑色素合成发生障碍所导致的遗传性白斑病。白化病为常染色体隐性遗传，常发生于近亲结婚的人群中。这类病人通常怕光，看东西时总是眯着眼睛。
两种动物的鉴别方法：
1、检查眼睛。白化病动物的眼睛瞳孔是红色的，虹膜为粉红或者淡蓝色。如果你的宠物正常物种眼睛是黑色或者棕色，而你的宠物毛为白色，且红眼睛大概就是白化病了。如实验用的小白鼠、大白鼠、红眼睛的大白兔等都是白化动物。
2、检查皮肤。扒开毛，看肤色，白化病一般肤色为粉红色或者乳白色，且干燥；容易得皮肤病。
3、最可靠的办法是基因鉴定。
㈡ 初三英语教案怎么写
Unit 3 Teenagers should be allowed to choose their own clothes.
Section A
Structures :should be allowed to do
Target language :
I think students should be allowed to do homework with friends.
I disagree. They talk instead of doing homework.
Sixteen-year-olds should not be allowed to drive.
I agree. They aren’ serious enough at that age.
Do you think sixteen-year-olds should be allowed to work at night?
No, I don’t.
Vocabulary : 1 sixteen-year-olds 2,part-time job 3 their own clothes
4 serious enough 5 get one’s ears pierced 6 spend tinme with sb 7 so do we
8 on school nights 9 I’m not allowed to go out on school nights
10 allow sb to do / allow doing sth
Important sentences: 1.I think sixteen-year-olds should be allowed to drive.
2.Do you think thirteen-year-olds should be allowed to have part-time jobs?
Goals
1，To train students’ listening, speaking, reading and writing skills.
2，To train students’ communicative competence.
Proceres
Warming up by learning “be allowed to do ”
Hi, everyone. Today we’re going to study Unit 3. Its title is
Teenagers should be allowed to choose their own clothes.
In the title we find a phrase “be allowed to”. What does it mean? How is it used in English?
Presentation
Step 1 Show the picture of power point to help students understand “agree” and “disagree”.
to drive a car
Do you agree or disagree teenagers to get their ears pierced
to use mbile phones at school
…
Step 2 Listen. 1b
This activity gives students practice in understanding the target language in spoken conversation.
Read the instructions to the class. Say,
You will hear a conversation between
Anna and her mother. They don’t agree with everything. Get students to read the three sentences in the box silently.
Play the reading for the first time.
Students only listen.
Play the recording a second time. This time students listen and circle T or F.
Check the answers.
Answers
1. T 2, F 3. T
Tapescript
Woman: So, what are you doing this afternoon, Anna?
Girl: I’m going to the mall with John. He just got his driver’s license.
Woman: I’m sorry. You can’t go with John. I don’t think sixteen-year-olds should be allowed to drive.
They aren’t serious enough at that age.
Girl: But I have to go to the mall. Gaby’s getting her ears pierced and I want to watch.
Woman: I don’t think sixteen-year-olds should be allowed to get their ears pierced. They might be sorry later.
Girl: I agree, but it’s fun to watch. Is it OK if we take the bus?
Woman: Well, I guess so.
Girl :Great! I want to buy a new blouse at the mall, too.
Woman: What kind are you going to buy?
Maybe I should go with you.
Girl: Aw, Mom. I’m not a child. I think teenagers should be allowed to choose their own clothes.
Woman: Well, I just want to be sure you get something nice.
Step 3 pairwork Look at the power point and practise in pairs.
Step 4 Listening
Listen to the tape and fill in the blanks with the words you hear
Molly says that Larry is working late tonight,but kathy thinks Larry shouldn’t be ____ to work late.Molly ____ with Kathy,She thinks teenagers never gets ___.Then Kathy thinks Larry shouldn’t work every night.This makes Molly agree.They think he needs time ____ homework,Also they think Larry’s hair should ____ because it doesn’t look ____. Kathy thinks Larry shouldn’t wear that ___ earring,but Molly thinks she ______ like it.
Listen again and check the answer
Tapescript
Molly: Larry is working late again tonight, Katty.
Katty: I know. Molly. I don’t think sixteen-year-olds should be allowed to work at night. Young people need to sleep.
Molly: I disagree with you. Teenager boys never get tired.
Katty: Well, maybe. But Larry shouldn’t work every night.
Molly: Oh, I agree. He needs time to do homework.
Katty: You know, Molly…he should really cut his hair.
Molly: Oh, I don’t know. Do you think it’s too long?
Katty: Yes, I do. It doesn’t look clean, and I think he should stop wearing that silly earring.
Molly: Oh, I disagree. I like it. It looks cool.
Katty: You know what worries me—Larry doesn’t seem to have many friends.
Molly: Really? I didn’t know that.
Katty: Yes, Molly. He needs to spends time with friends.
Molly: Like you and me?
Katty: Maybe.
Step 5 Sum-up
㈢ 初中英语写作课的讲法
初三英语写作公开课课教学设计
课型：专题复习课
教学内容：初三英语书面表达专题复习
教学目标： 1.指导学生掌握书面表达语篇结构的组织技巧。
2.帮助学生学会使用常用的连接词、过渡词和过渡句，提高文章的连贯性。
3.培养学生在有限的时间内快速构思、罗列提纲的能力。
4. 指导学生小组合作评改学生习作。
教学重点： 1.帮助学生学会使用常用的连接词、过渡词和过渡句，提高文章的连贯性。
2. 培养学生在有限的时间内快速构思、罗列提纲及扩展成文的能力
教学难点：1.帮助学生学会使用常用的连接词、过渡词和过渡句，提高文章的连贯性。
2. 培养学生在有限的时间内快速构思、罗列提纲及扩展成文的能力讨论法
教学方法：自主学习，合作学习
教学辅助手段：电脑（或实物投影仪）
学情分析：
1. 书面表达是写的一种途径，是英语交际的重要组成部分。初中阶段对于英语写作的要求，实际上是“有指导的写作”(Guided Writing)。它通过提供情景(文字、图画、表格)，让学生用学过的英语语言来描述事物或事件并表达一定的思想，以此达成和检验对所学英语语言知识的实践应用能力。客观地说，书面表达一直是我们英语教学的一个难点，也是学生应试的一个难点。
从中考英语试卷的抽样调查情况来看，英语写作是得分最为薄弱的一个题项。究其原因，一是学生写作练习的时间少，二是教师平时缺乏对学生进行系统的写作知识的指导。（比如，如何用词、句、组段、谋篇等）。这些原因造成了学生从最初不会写盲目写到不愿写。惧怕写，直至最后拒绝写的恶性循环。
2. 学生分析 我校学生生源较差，学生英语学习两级分化严重，因此尽管经过3年的学习与训练，仍有相当一部分学生作文得分在6-7分之间甚至更低。书面表达中式英语较多，连贯性较差。很多学生对书面表达中快速构思和罗列提纲能力较差。本堂课希望通过指导、帮助提高学生学会使用常用的连接词、过渡词和过渡句，提高文章的连贯性,帮助学生在有限的时间内快速构思、罗列提纲能力。
二、教学流程设计
步骤 目的 教师活动/方法 学生活动/方法
1. warm-up Attract the Ss attention. Let them focus on the topic
Lead out the importance of using the conj.s properly in English writing. Ask Ss:
1. What do they think of the English writing? Easy or difficult?
2.What troubles them most in their writing? Answer the questions, and tell their feelings about English writing.
2. task 1 Ss compare two Ss’s writing and evaluate it
Let Ss realize the importance of using the conj.s
1. have Ss compare two Ss’s writing and evaluate it
2. tell Ss it’s very important to use the conj.s properly 1. compare the two Ss’ writing in pairs and evaluate it, understand the importance of using the conj.s
3. task 2
Lead Ss to learn how to organize a composition, how to use the conj.s and how to write a good composition 1. have Ss complete the exercises, underline the conjs , topic sentences, supporting sentences and conclusion sentences of a student’s composition
2. Analyze the composition together 1 Ss complete the exercises, underline the conjs , topic sentences, supporting sentences and conclusion sentences of a student’s composition
2..Ss learn how to organize a composition, and how to use conj.s properly.
4. task 3 Lead Ss learn to list the outline of the composition, and complete the writing. And evaluate it together
1. help Ss to learn how to list the outline of a composition.
2.Have Ss write the composition
3. have Ss evaluate their writings 1. Ss learn how to list the outline of a composition.
2. write the composition
3. evaluate their writings in pairs
summary
and homework 1. Summary how to write a good composition.
2. Homework
Rewrite the composition and complete the other exercises
课后反思：
本节课从提问学生写作中最大的困惑入手，引出本节课的主要教学目标，在写作中学会构思和使用连词。通过比较两篇学生的英语习作，让学生认识到连词在英语写作中的重要性。通过分析一篇学生的范文，让学生了解怎样去运用关联词，怎样去组织一篇文章，最后让学生根据提供的材料完成一篇习作，并互相评价，修改。
我认为本节课在以下几个方面处理得较好：
1. 课堂教学组织严谨，教学各个环节环环相扣，很流畅，由提问引出主题，通过比较学生习作认识到连词使用的重要，通过分析学生习作教学生学会怎么运用，最后进行实践。
2. 学生书信写作练习的设计比较新颖。从一位学困生的角度，用广州话说出对老师的感激，及今后的打算，容易引起学生写作的兴趣。
3. 考虑到本校学生生源的实际情况，写作任务经过了层层分解，从文章结构的构思，到语言的组织，时态的运用等给足了提示，使写作任务的难度降低了，让大部分学生都可以完成写作任务。
不足方面：因时间关系，学生写作的时间不太够，还有一小部分学生没有按时完成写作任务。习作的点评也不够时间处理，只点评了一篇习作，如果能找各个层次的学生习作进行点评就更好。