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1、Unit 13Were trying to save the earth!,单词串烧,How to protect environment With the development of our society, pollution has become more and more serious. We cant afford to wait any longer to take action! First, our government should develop related laws.,Second, we shouldnt litter. Plastic bottles are
2、everywhere . Even the bottom of the river is full of rubbish, and there is little fish for fishermen to catch. Third, stop using wooden chopsticks and try to recycle more paper. Cutting down trees is not only cruel but also harmful to the environment. Fourth, less coal should be burnt in different i
3、ndustries. Fifth, ride a bike instead of driving. It doesnt cost anything and the other advantage is that its good for our health. In a word, everyone can take part in stopping turning our beautiful earth into an ugly one.,重点词汇 1litter v. 乱扔n. 垃圾；废弃物 2fisherman n. 渔民；钓鱼的人 3ugly adj. 丑陋的；难看的 4cost v&
4、n. 花费；价钱 5plastic adj. 塑料的n. 塑料；塑胶 6cruel adj. 残酷的；残忍的 7industry n. 工业；行业,8afford v. 承担得起(后果)；买得起 9gate n. 大门 10president n. 负责人；总统；主席 11metal n. 金属 12bottom n. 底部；最下部 13coal n. 煤；煤块 14advantage n. 优点；有利条件 15wooden adj. 木制的；木头的,16scientific adj. 科学上的；科学的 17harmful adj. 有害的 18law n. 法律；法规 19recycle v
5、. 回收利用；再利用 20bottle n. 瓶子 21work n. (音乐、艺术)作品 重点短语 1try to do sth. 努力做某事 2make a difference 起作用；有影响 3help to do sth. 帮助做某事,4cut down 减少；削减 5remember to do sth. 记得要做某事 6in southern China 在中国南部 7in the last 20 to 30 years 在最近二三十年里 8so far 目前；迄今 9in danger 处于危险中 10take part in 参加 11pay for 付费；付出代价 12pu
6、t sth. to good use 好好利用某物 13upside down 上下颠倒；倒转 14take action 行动起来,15add up 堆积；累计 16be made of 由制成 17buildout of 用来建造 18save the earth 拯救地球 19throwinto 把扔进里面 20play a part in 参与 21go shopping 去购物 22lead to 导致 23at the top of 处于的顶部 24teach sb. about sth. 教某人某事,25scientific studies 科学研究 26be good for
7、对有益 27turn off 关掉 28throw away 扔掉；抛弃 29pulldown 拆下；摧毁 30afford to do sth. 承担得起做某事 31begin with 以开始 32hear of 听说 33set up 建立；成立 34get worse and worse 变得越来越糟糕 35be harmful to 对有害 36bring back 恢复；使想起；归还,课文重点句型必备 1what are your ideas for solving these problems? 对于解决这些问题，你们有什么想法？ 2Great ideas! 好主意！ 3What
8、 about waste pollution? 那么废物污染呢？ 4Have you ever taken part in an environmental project? 你曾经参加过保护环境的活动吗？,5Thats fantastic! 太好了！ 6I think that everyone should use public transportation. 我认为大家都应该乘坐公共交通工具出行。 7I disagree. 我不同意(你的意见)。 8Recycling paper is really easy. 回收再利用纸张真是简单。 I agree. But its hard to
9、stop riding in cars. 我同意。但是停止驾驶机动车是困难的。,9We really shouldnt use paper napkins, you know. 你知道，我们真的不应该使用餐巾纸。 I know. I stopped using them last year. 我知道，我去年就不用它们了。 10Not only can the art bring happiness to others, but it also shows that even cold, hard iron can be brought back to life with a little cr
10、eativity.,这种艺术不但能带给别人幸福，同时也说明，只需要一点创造力，即使是冷冰冰的硬铁也可产生活力。 11Which parts of the town/city have a nice environment? 在这个镇/市里哪些地方的环境好？ 重难点释疑,第一课时(Section A 1a2d),1Everyone in this town should play a part in cleaning it up! 镇上的每个人都应该参与清理它！ play a part in意为“参与某事；在方面起作用”，后接名词、代词或动词ing形式。 eg： Education can pl
11、ay a part in it. 教育可以在其中起到作用。 She plays an active part in politics. 她积极参与政治活动。,2Well, to cut down air pollution, we should take the bus or subway instead of driving. 哦，为了减少空气污染，我们应该乘公共汽车或地铁，而不是开车。 (1)to cut down在句中作目的状语。动词不定式(短语)在句中作目的状语时，既可放在句首，也可放在句末，意为“为了”。 eg： I stayed there to see what would ha
12、ppen. 我待在那儿，看看会发生什么。,(2)cut down为固定短语，意为“减少；把砍倒；裁短；缩减”，cut此处作不及物动词，其过去式和过去分词均是cut。 eg： They cut down the big tree.他们把这棵大树砍倒了。 Youd better cut the article down to about 2，000 words. 你最好把这篇文章缩减到两千字左右。 (3)instead of此处作介词短语，意为“代替；而不是”，后面常跟名词、代词或动词ing形式。instead of doing sth.意为“代替做某事”。 eg：,She went to sch
13、ool instead of staying at home. 她没有待在家里而是去上学了。 I can go to the meeting instead of my sick brother. 我可以替我生病的弟弟去开会。 辨析：instead of与instead instead of：介词短语，其后可跟名词、代词或动词ing形式。 eg： Now I can drive to work instead of walking. 现在我可以开车去上班而不必步行了。,instead：副词，常位于句末，位于句首时，其后有逗号。 eg： He didnt reply. Instead, he l
14、eft the room. 他没回答，反而离开了房间。 3So together, our actions can make a difference and lead to a better future! 因此，我们齐心协力就能带来变化，创造更加美好的未来！ (1)make a difference意为“起作用；有影响”。表达对“对产生影响”用make a difference to。difference,前面可加修饰语，如big，great，a bit of等，表示受影响的程度。 eg： The false step will make a great difference to our
15、 plan.这次失误会对我们的计划造成很大影响。 (2)lead to意为“导致；通向(某地)。” eg： Hard work can lead to success.苦干方能成功。 The road leads to the small town. 这条路通向那个小镇。,第二课时(Section A 3a3b),1This is not only cruel, but also harmful to the environment. 这不但残忍，而且对环境有害。 harmful形容词，意为“有害的；不利的”，常构成固定搭配be harmful to sb./sth.，意为“对某人/某物有害”
16、。 eg： The air pollution is harmful to our health. 空气污染对我们的健康有害。,Dont you think smoking is harmful to health？难道你不认为吸烟有害健康吗？ 【拓展】 harmful是由harm加上ful后缀构成的形容词，类似的词还有： thankthankful感激的；感谢的 wonderwonderful令人惊奇的 successsuccessful成功的 useuseful有用的 forgetforgetful健忘的 carecareful细心的,2Sharks are at the top of the food chain in the oceans ecosystem. 鲨鱼在海洋生态系统中处于食物链的顶端。 at the top of意为“在顶部或顶端”，在句中作表语。其反义短语为at the bottom of“在的底部”。 eg： He is at the top of the class in study. 他在学习上居全班之首。 He shouted at the t
