1、本网站免费注册后即可以下载，点击开通VIP会员可无限免费下载！
2、资料一般为word或PPT文档。建议使用IE9以上浏览器或360、谷歌、火狐浏览器浏览本站。
3、有任何下载问题，请联系微信客服。
扫描下方二维码，添加微信客服
4、培养写作中的创新意识和想象力。
5、学会运用正确的评价方式反思自己的写作行为和结果。
（二）、学习策略目标
1.从字词到句子再到文章的整体教学流程，使学生能学会如何思考一篇文章的写作流程。
2.采取小组合作形式，与同伴合作交流，互相帮助共同提高写作技能。
（三）、情感目标
使学生能明白雾霾产生的原因及其危害性，能过话题讨论、看图说话、写作练习；培养学生的合作学习、环保意识及掌握一定的说明文写作技巧，为今后的学习打好基础。
四、教学重点与难点
1. 如何掌握说明文的基本结构，写好一篇说明文。
2.掌握说明文的基本写作技巧；怎样把握文章的整体性、关联性和逻辑性。
五、Steps of teaching
A. Pre-writing
Activity 1. Students listen to a song ”Tomorrow will be better.” Then ask; How to make our tomorrow better?
Activity2.
Show students a picture of the earth and ask “ What can you see ? What is happening to our home—the earth? How many kinds of pollution do you know? Which is the most serious pollution?
Activity3.
Students look at three pictures. Ask: What activities may cause air pollution ?------lots of black smoke、tail gas and setting off fireworks …What will happen in such bad weather?
Activity4.
Show students a picture of haze weather ? Ask：”What is called haze and what is its harm?”
Activity5 .Discuss in groups.
Discuss in groups . How to solve the problem ? Activity6.
Check their answers. B..While--writing Activity1.Show students the writing material..Let students think it over, and show their ideas to the class. First
Second,
Third，
Finally,
Activity2.Let students list their ideas on the notebooks, then call out some students to read them in class. : .
Activity3. Write the composition.
C .Post-writing:
Activity1：Get the students to evaluate their compositions in groups.
1. Exchange their writing with other members in the groups (six students in a group), and ask the students to give some comments on the one he or she has read.