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1、Unit 2 Saving the earth.Topic 2 All these problems are very serious.Section C【学习目标】1.进一步学习各种污染对地球的危害和造成这些污染的原因；2.能根据不同的阅读目的，运用简单的阅读策略获取信息。【预习案】一、读1a，完成1b二、 在文中找到并划出下面的短语 1.在地球上；究竟_2.在这个时期_3.全世界_ 4.数以百外计的树木_5.穿过这个洞_6.直接地到达地球_7.致癌_ 8.增加了许多_9.燃油_ 10.来自太阳的热量_11.温室效应_12.海平面_13.全球气候_ 14.涉及，有关，提到_【探究案】 在文中
2、划出下面的句子并分析 1.Some things weve done are very good for the earth while some are bad. 点拨：Some things weve done - 我们已经做过的事情,在句子中作主语 the films theyve seen-_while 并列连词，“而，却”，表示对照关系。while- 一会儿，一段时间 - 名词 常用短语：for a while - 一会儿拓展：与take 有关的词组 脱下，（飞机）起飞_ 把带到去_发生 _ 乘公交车，轮船，火车_ 轮流，替换 _ 照顾，照看_拍照 _ 休息一下 _坐下 _ 吃药 _
3、吸毒 _ 花费某人时间做某事_锻炼_2.点拨：rise - 升起，上升 (不及物动词) 拓展：raise 举起，提起，抬起 ； 筹集 (及物动词)练习：1)太阳从东方升起。The sun _ in the east. 2)河水在慢慢地上涨。The water in the river _ _ _.3)让我们为友谊干杯。Lets _ glasses to _ _.【归纳】I. 用所给单词的适当形式填空 1. Do you realize the _ (important) of studying English?2. Liu Yu is working for some _ (organize)
4、 of the young. 3. Human beings have destroyed the environment, so it has _ (punish) us. 4. The pet dogs _ (die) made my sister very sad. 5. We must save the animals in _ (dangerous). II. 汉译英1. 树木和草能阻止水把土壤冲走。 Trees and grass can _. 2. 请按时交作业。 Please hand in your homework _.3. 务必让他知道在几点钟开始。 _ to let h
5、im know when the meeting begins. 4. 你明天可以乘公共汽车或小汽车去那儿。 You can take _ to go there tomorrow.5. 我们明天有许多作业要做，所以我们要早起。 We have _ tomorrow, so we need to get up early.6. 我认为我们中没有人喜欢污染。 I think _ likes pollution. 7. 窗户能让阳光进入房间和阻止风吹进房间。 Windows can let the sunlight into the room and _ the wind _ into the r
6、oom. 8. 这个工厂每天排放大量废水流进河中。 Plenty of waste water in the factory _ the river every day.9. 结果，在老师的帮助下。他们取得了很大的进步。 _, they have made great progress with the help of the teacher. 10. 我们每个人都在竭力学好英语。 Every one of us _ learning English well.III. 根据首字母提示完成短文。 Trees are very useful to us. They can help p_ the
7、 wind from b_ the earth away and stop the s_ from moving towards the rich land. Trees also s_ the water from running away. They can keep a l_ of water. So we must stop people from c_ down too many trees. Otherwise a lot of rich land will change into d_ . T_ we are doing something to p_ the environment, we still have a l_ way to go.
