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
The air is dirty.
Do you like the dirty air?
Smoke makes the air dirty.
dirty
bird
girl
shirt
It comes from the cars, buses and factories.
Think and say
The black smoke
is from the factory.
Trees keep the air clean.
What keeps the air clean?
clean
bean
mean
meat
We should plant more trees and keep the air clean.
Tree Planting Day March 12th
植树节
Think and say
How should we make the air clean?
Learning guide
(学习指南)
Listen to the tape, and then try to answer the questions. （请你仔细听录音，尝试回答下面问题。）
1. What’s the matter with Kitty? Why?
Ben: What’s the matter, Kitty?
Are you crying?
Kitty: I’m not crying. My eyes hurt. It’s the smoke.
Ben: Where is the smoke from?