Unit 1 Welcome to the unit&Reading ppt课件（含音频）-（2020）新牛津译林版高中英语必修第三册.rar

Section AWelcome to the unit & ReadingVocabulary Vocabulary 1. harm do harm to sb = do sb harm损害某人;对某人有害There is no harm in (sbs) doing sth.=It does no harm (for sb) to do sth.（某人）做某事没有什么坏处。mean no harm没有恶意do more harm than good 弊大于利harmful adj.有害的be harmful to. 对有害harmless adj.无害的练习 ：The gases given off by the factory contain a poisonous substance that is _ (harm) to peoples health.harmful2. varietya variety of=varieties of各种各样的；不同种类的vary vi.（大小、形状等）相异，不同；（根据情况）变化vary from.to. 由到变化vary with 随变化vary in在方面不同various adj.各种各样的；不同的 练习：Following a particularly large amount of rainfall earlier, a _ (vary) of flowers come into blossom.variety3. massa mass of/masses of大量的（既可修饰可数名词，也可修饰不可数名词）the masses群众；平民百姓the mass of大多数；多数mass production/unemployment批量生产/大批失业massive adj.巨大的；非常严重的练习：The mass of people in that country _ (be) Christians.are4. livingmake a living 谋生earn a/ones living 谋生everyday living 日常生活the cost of living 生活开销，生活费living standards/conditions 生活水平/条件练习：A drop of water seen through microscope is filled with _ (live) things.living5.survivesurvive (from) sth. 幸免于；从中活过来A survive B (by) A 比 B活得长（）survive on 靠生存下来survival n.幸存；生还；残存物survivor n.幸存者练习：If he couldnt find his way out of the forest, there would be little chance of _ (survive).survivalLeading inLeading in1. What are the rhyming words in this song?2. How do you understand harm and alarm in this song?harm/alarm; seas/trees; clean/green; above/love; pollution/solutionHarm means something bad we have done to the Earth, including polluting soils and seas, cutting down too many trees, etc.Alarm means the signal that warns us of the dangers of environmental damage, which urges us to find a solution to this problem.1. What is the message of the song?Humans have done much harm to the Earth, and we have to take action to change this situation.2. What can you do to help protect the environment?We can use less paper and fewer plastic bottles and bags. Cutting down on electricity usage can also help reduce the air pollution that power stations create.Listen and thinkListen and thinkBefore readingBefore readingWhat plants or animals do you know about? What is special about them?Sloths are one of the slowest creatures on the Earth. They live hanging upside down in rainforest trees. Modern sloths are smaller than the extinct giant sloths which were as big as elephants and lived on the ground. Giant redwoods are impressive because they can grow as tall as 83 metres and as wide as 21 metres. You can drive a car through their trunks. They have been around since dinosaurs roamed the Earth but are now in danger of becoming extinct.What do you think this script is about judging from the title and pictures?I think the script The Amazon rainforest: a natural treasure is about the Amazon jungle and the plants and animals found there. They are all natural treasures because they are valuable to the Amazon. The pictures show that the plants and animals living in the Amazon rainforest are unusual and beautiful. There are different kinds of animals that depend on the rainforest for shelter and food.Para. 1: Introduction to the Amazon rainforestPara. 2: Basic information about the rainforestPara. 3: Plant biodiversity; levels of the rainforestPara. 4: Animal biodiversity; food chainPara. 5: The rainforests value to the human race; threats to the rainforestRead the documentary script and write the main idea of each paragraph.86 million6,40040,0001,30040020% 17%Discussion Discussion 1. What makes the Amazon rainforest a natural treasure according to the script?The Amazon rainforest is unique, beautiful and valuable. It contains 10% of all known species on the Earth. It produces over 20% of the planets oxygen. Its wonderful plant and animal species have enabled humans to make amazing discoveries.2. What is your answer to the question at the end of the script? Support your opinion with information from the script or other sources.No. The Amazon rainforest is far too important for us to allow it to be destroyed. It helps maintain the balance of the ecosystem and provides our society with food and medicine.3. Are there any places in China with rich biodiversity like the Amazon rainforest? What are they? Introduce one to the class.The Three Parallel Rivers of Yunnan Protected Areas is a natural property consisting of 15 protected areas. The property is of outstanding value for its diversity of landscapes and rich biodiversity. In its 15 different protected areas, there are over 6,000 plant species, around 200 mammal species and more than 400bird species. A large number of rare animals such as Yunnan golden monkeys, snow leopards and black necked cranes can be found here.In the sentence Yet there is one major danger to these irreplaceable plants and animals: us. (page 3, lines 3334), why us is used instead of human beings here?Thinking Thinking By using us instead of human beings, the author wants to emphasize that everyone of us is responsible for the damage to the rainforest. Therefore, all of us have apart to play in protecting it.Finish B1Finish B1varietyagriculturesurviveimpactdue toare broken downbeneaththusThank youThank youThank youThank you