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
produce(产生) less pollution
new energy
run out (耗尽)
energy from the sun, wind and water
cut down trees
砍倒
But they are not allowed(允许) to cut down trees.
允许某人做某事
某人被允许做某事
allow sb. to do sth.
sb. be allowed to do sth.
Things like glass, plastic and paper
Ideas:
Have laws
punish
fine
limit
Things can be separated into different groups and recycled
Ideas
separate
allow
cut down
punish
fine
depend
depend on/upon
vt.&vi 分开，隔开
vt. 允许
砍倒
vt. 处罚，惩罚