Unit 13 We're trying to save the earth! 重点知识点+提升训练 2023-2024学年人教版九年级英语

Unit 13 一．重点短语： 1.be harmful to 对……有害 2. be full of the rubbish 充满了垃圾 3. throw … into … 把……扔入……中 4. at the bottom of … 在……底部 5. take part in 参加 6. fill the air with black smoke使空气中充满了黑烟 7. cut down air pollution 减少空气污染 8. make a difference 产生影响 17. take action 采取行动 18. turn off 关掉 19. pay for 付费 20. add up 累加 21. use public transportation 使用公共交通 22. recycle books and paper 回收书和废纸 二．固定结构： 1. not only…but also…不仅……而且…… 2. play a part in cleaning it up尽一份力把它清理干净 3. turn off the shower 关掉（淋浴器）喷头 4. ride in cars 开车出行 三、重点句子 1. Even the bottom of the river was full of rubbish. 即使河底都充满垃圾。 2. Everyone in town should play a part in cleaning it up. 城里的每个人都应当尽一份力把它清理干净。 3. The air is badly polluted because there are too many cars on the road these days. 空气被严重污染因为如今路上的汽车太多了。 4. To cut down air pollution, we should take the bus or subway instead of driving. 为了减少空气污染，我们应当乘坐公汽或地铁而不是开车。 5. I used to be able to see stars in the sky. 我过去能在天空中看到星星。 6. The air has become really polluted around here. I’m getting very worried. 这儿的空气真的已经被污染了，我非常担心。 7. No scientific studies have shown that shark fins are good for health.没有科学研究说明鱼鳍对人们的健康有好处。 四．语法要点 ： 1. 动词不定式做目的状语时的用法 1). 不定式和不定式短语作目的状语，用来修饰动词，表示某一动作或状态的目的。为了使目的意义更加清楚或表示强调意义时，还可以在前面加 in order to 或 so as to。eg： To cut down air pollution, we should take the bus or subway instead of driving. 为了减少空气污染，我们应当乘坐公汽或地铁而不是开车。（句中To cut down air pollution是动词不定式作目的状语。） I've written it down in order not to forget. He shouted and waved so as to be noticed. 2). 在句子中作谓语动词的状语的不定式或不定式短语，表示的是主语的目的，因此，其逻辑主语通常是句子的主语。比较： To draw maps properly, you need a special pen.（正） To draw maps properly, a special pen is needed. （错） 3). 由 in order to 引导的目的状语，既可以置于句尾，也可以置于句首，而由 so as to 引导的目的状语，只能置于句末，而不能置于句首。比较： He started early in order to get there in time.（正） In order to get there in time, he started early.（正） He started early so as to get