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
加深对present perfect tense 的认识。
2.Skill aims:
能听懂描述环境变化的对话，区别一般过去时和现在完成时的用法。
能理解和运用一般过去时和现在完成时来进行听、说、读活动。
3.Emotional aims: (optional)
让学生了解环境污染的严重性，并树立环保意识。
4. Culture awareness: (optional)
通过课文的学习，让学生了解环境的变化，关注全球的环境问题。
Ⅲ. The key points and difficult points
1. Key points:
Words and phrases: bee, butterfly, mess, shame, several, pollute, waste, villager, destroy, cut down, goodness, pour, see sb. /sth. doing sth., cut down, my goodness
Sentences: What a shame! / What a mess!
The flowers and grass have gone!
What has happened here?
There be sth./sb. doing sth.
There are several factories pouring waste water into the stream.
Everything has changed.
Difficult points：
正确使用there be sth./sb. doing sth.来表达“有某人/物正在做某事” 。
能正确地使用一般过去时和现在完成时并完成相应的练习。
Ⅳ. Learning strategies
通过导学案，培养学生形成课前预习新单词和句型的习惯。
通过听1a，引导学生模仿1a 的语音/语调和练习已有对话。
通过能力提高，培养学生整合对话信息，将对话转换为语篇的能力。
Ⅴ. Teaching aids
视频（Micheal Jackson Earth Song） 图片（关于环境变化和环境保护的图片资料），幻灯片等。
Ⅵ. Teaching procedures
Step1：Getting students ready for leaning
Show an MV(Earth song ) to students ( students are very easily attracted by songs /pictures and vedios .By this way, I can make them forcus on my calss and lead in today’s topic :Pollution has caused too many problems.)
Teaching activities:T: hi boys and girls ! Do you like this song?