Unit 13 Section A Grammar focus-4c 情景式教学语法课 课件 2023-2024学年人教版英语九年级全册

Unit 13 We are trying to save the earth! Section A (Grammar focus-4c) 人教新目标版 九年级(下册) Learning objectives 1.学习本课新词汇：take part in ,afford, turn off, reusable, pay for, take action, transportation 掌握句型: We can’t afford to wait any longer to take action! Have you ever taken part in an environmental project? We should help save the sharks. No scientific studies have shown that shark fins are good for health. The river used to be so clean. The air is badly polluted. 2. 通过观看视频，能够找出不同事态的句子，通过翻译Grammar focus里的句子，能够说出现在进行时、现在完成时、情态动词、被动语态、used to的表意功能和用法。 3.通过观看视频回答问题能够谈论污染问题，能在实际情景对话中认识解决空气污染和垃圾污染的方法。 Let’s watch the video and pay attention to the grammar of sentences. Can you find out the sentences in the simple past tense? It was a lovely fresh spring in the meadow. You found me easily. Can you find out the sentences in the present progressive tense? What are you looking at? They are dancing through spring flowers. Can you find out the sentences in the present perfect tense? Little Green Worm has grown. I haven’t seen one quite like this before. Can you find out the sentences with modal verbs? You must be the best finder. I might be. I can’t see anytihng. Little Green Worm must have been really hungry. Read the following sentences and grammar items. 1. We’re trying ______ ______ the earth. 我们正在尽力地拯救地球。 2. The river ______ _____ be so clean. 河流过去常常是如此干净。 3. The air ____ badly ________. 空气被严重地污染了。 4. No scientific studies ______ ____ that shark fins are good for health. 没有科学研究显示鲨鱼鱼鳍对健康有益处。 5. We _____ ______ save the sharks. 我们应该帮助拯救鲨鱼。 to save used to is polluted have shown should help What tense can you identify(识别)? We’re 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 shark fins are good for health. Present perfect We should help save the sharks. Modal verbs 现在进行时的结构和用法(Present progressive) 定义：表示说话时(瞬间)正在进行的动作