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
8.海洋生态系统
different kinds of pollution
the bottom of the river
throw litter into the river
play a part in
in southern China
be harmful to
at the top of
the ocean’s ecosystem
Revision
Translate these sentences into English.① 甚至是河底都满是垃圾。
Even the bottom of the river was full of rubbish.
② 这个方法不仅残酷还对环境有害。
This is not only cruel, but also harmful to the environment.
③ 鲨鱼处于海洋食物链的顶部。
Sharks are at the top of the food chain in the ocean’s ecosystem.
④ 许多人相信鱼翅对健康有好处。
A lot of people believe that shark fins are good for health.
Go through the conversations and a short passage in Section A quickly and find some important sentences and read aloud.
We are trying to save the earth.
Present progressive
The river used to be so clean.
used to
The air is badly polluted.
Passive voice
No scientific studies have shown that sharks fins are good for health.
Present perferct
We should save the sharks.
Model verbs
Grammar Focus