Unit 5 Wild animals Grammar 课件 2024-2025学年牛津译林版八年级英语上册

Unit 5 Wild animals Grammar Extensive reading Many wild animals are facing the danger of extinction, because the environment that they are living in has changed greatly. For example, with the development of cities, the use of insecticide(杀虫剂) and serious pollution, their living areas have become narrower and narrower. Many of the wild animals are faced with food crisis now. At the same time, man is killing off species just for getting their fur, skin, teeth and meat. In order to protect our ecology(生态), people should realize that the loss of any species means the loss of knowledge and natural beauty. Therefore, measures of the following should be taken: killing off certain rare species is prohibited; pollution standards are made to keep down poisons; national parks should be set up as reserves(保护区). 1. What does the underlined part mean? A. bigger and bigger B. smaller and smaller 2. What should we do to protect our ecology? A. Prohibit killing off rare species. B. Make standards to keep down poisons. C. Set up national parks as reserves. D. Above all. 单选 Review 1. If the bamboo forests are becoming smaller and smaller, what will happen to pandas? 2. If we do nothing, what will happen to pandas? They may ...... Soon there may ...... 气到哭泣 They may not have a place to live or food to eat. Soon there may be none left. Presentation Using may for possibility Model:It may _________. be sleepy It may _________. be crying It may _________. need food enjoy touching Model:It may not _________. It may not ___________. be happy 1. The news may or may not be true. 2. At the moment she may be playing with her classmates. 3. I may be late, so don’t wait for me. 1.may可用来表示猜测某件事发生的可能性，常译为“也许，可能”，通常用于肯定句与否定句。 may 的用法 这消息也许是真的，也许不是真的。 此刻她可能正在和同学们玩。 我可能会迟到，所以别等我。 2. 表示允许(可以) You may go homenow, Robert. 罗伯特，你现在可以回家了。 3. 表示祝愿 May I come in? May you have a happy weekend. 祝你有一个愉快的周末 may need may be may hurt may not be may be playing may be sleeping Practice 1. Peter ______ come with us tonight,  but he isn't very sure yet. A. must   B. may  C. can D. will 2. — Will it be sunny this afternoon? — It ____ fine. Who knows? The weather (天气) always changes quickly. A. must be B. will be C. may be D. maybe Exercise 3. --Do you have any plans for this weekend? --I’m not sure. I _____ go climbing Mount Yuntai. A. must B. need C. may D. can 4. --How nice the building is! What is it for? --It _____ a hotel. But I’m not sure. A. must be B. have to be C. may be D. can be 5. --When are we going to have a picnic? --I’m not sure. Ask Millie, please. He _____ know. A. need B. can C. may D. shall Sentences from this unit: 1. At four months old, she weighed about eight kilograms and started to go outside for the first time. 2. When she was six months old, she began to eat bamboo. 3. When she was 20 months old, she learnt to look after herself. Presentation Using verbs + to-infinitives 上面例子中主要行为动词后面的动词 都采用了“to + 动词原形”的结构，我们把 这种结构称为动词不定式。 当句子中已经有谓语动词，而我们又要 表达不止一个动作概念时，其余的动词可以 使用非谓语形式表达。 动词不定式就是动词的一种非谓语形 式，其基本形式是“to+动词原形” 注意：动词不定式在句中不作谓语， 因此没有人称和数的变化。 动词不定式在句中常作谓语动词的宾语 decide hope want agree choose plan offer wish learn would like promise fail refuse seem hate like love prefer begin start try forget remember stop need 常接动词不定式作宾语的动词有： learn to work out decide to fly remember to come back begin to save Practice to have to go to ride to read to visit to buy to travel to be to see Practice Activity Work in pairs and think about more verbs+to-infinitives. Make some sentences with verbs + to-infinitives. 1. — Don’t forget ______ your homework, John. — Ok, I’ll do it right now. 2. — Have you decided which senior high school to choose? — Not yet. I ______ go to Moonlight School. 3. —Bob, where is Linda? —She _______ be in the library, but I am not sure. to do may Exercises may 1. Review the Grammar and make some sentences with may and verbs + to-infinitives. (at least 10) 2. Finish the exercises. 3. Preview Integrated skills. Homework $$