高二英语外研选择性必修一Unit-5-Revealing-nature-课件2.pptx

1、选择性必修一 Unit 5 Revealing nature(2)高二年级 英语Using language ListeningLearning objectives1.Get the main idea of the passage and list expressions related to biodiversity by reading.2.Get the main idea of the listening material and write down useful expressions related to the topic of cells and bacteria.3.A

2、ct out the conversation about cells and bacteria.4.Make a new conversation about biodiversity.What is biodiversity in your mind?Reading for informationThe main idea of the passage:It introduces the largest animal species:the blue whale and the toughest species the water bear and their characteristic

3、s.1.What species are mentioned and what is special about them?2.What other unusual life forms do you know of?Reading for information1.What species are mentioned and what is special about them?Earth is home to millions of different species.Some can be very small,like bacteria and viruses,which are so

4、 small that we cannot see them with only our eyes.By contrast,the largest animal species so far found on our planet is the blue whale,which can grow up to almost 30 metres in length and weigh over 130,000 kilos.Reading for information1.What species are mentioned and what is special about them?The to

5、ughest species is probably the water bear.This tiny organism can survive temperatures from 150 to a below freezing-272.To best survive in their environment,each species has developed its own unique physical characteristics.Reading for information1.What species are mentioned and what is special about

6、 them?Two species are mentioned:The blue whale and the water bear.The blue whale is the largest animal species on earth,which can grow up to almost 30 metres in length and weigh over 130,000 kilos.The water bear is the toughest species,which can survive in extreme temperature.Reading for information

7、2.What other unusual life forms do you know of?Vipers,elephants and pandas are very unusual.You can have your own answers.Reading for informationA map of the Galapagos Islands Tortoises,mangroves and iguanas are mentioned.Find out the species mentioned.ancestor scientific be native to primitivehabit

8、at appearance be home to ecosystemComplete the paragraphs.The Galapagos Islands are renowned worldwide for their unique biodiversity.The Giant Tortoise Reserve on Santa Cruz several species of giant tortoise that the Galapagos Islands.The island is also home to the Charles Darwin Research Station,wh

9、ere studies are carried out.is home toare native toscientificComplete the paragraphs.Mangroves are one of the coastal plants that grow on Isabela.They serve as the for various birds and fish,and are very important to the .habitatsecosystemComplete the paragraphs.Iguanas can be found on San Cristobal

10、.They have a very special ,with comb-like spines on their back.There is evidence that all the different iguanas have developed from more ones and share a common .appearanceprimitiveancestorComplete the paragraphs.1.The existence of a large number of different kinds of animals and plants which make a

11、 balanced environment.2.The simplest and smallest forms of life.3.Oganics.biodiversity organic mattersbacteriaUseful Words4.The system in your body that produces substances to help it fight against infection and disease.5.All the plants and living creatures in a particular area considered in relatio

12、n to their physical environment.6.The smallest unit of living matter that can exist on its own.cellimmune systemecosystemUseful WordsWhen you listen to the podcast,it is important to find out the purpose of it.Before listening,think about what topics might be discussed.The main idea of the passage i

13、s:something about cells and bacteria.Listening for main idea1.Biodiversity is important.2.Bacteria are always harmful to humans.3.Some species of bacteria are used in food production.4.Many species of bacteria recycle dead organic matter.5.Our immune systems are able to fight off all germs.Listen an

14、d choose the statements that are made.During the podcast,listen carefully to each question and try to understand the main ideas within the responses.Learning to learn1.Biodiversity is important.2.Bacteria are always harmful to humans.3.Some species of bacteria are used in food production.4.Many spec

15、ies of bacteria recycle dead organic matter.5.Our immune systems are able to fight off all germs.NFNTTListen and choose the statements that are made.As you listen,make notes of key information such as key words,numbers and facts.This will help you understand and remember the information you hear.Lea

16、rning to learnlEvery living thing is 1 .They are like 2 .lIn the human body there are about 3 human cells and around 4 bacteria cells.lMost bacteria in the human body can 5 .lIn the food production process,bacteria can 6 dead organic matter.Listening for detailed information lEvery living thing is .

17、They are like .lIn the human body there are about human cells and around bacteria cells.lMost bacteria in the human body can .lIn the food production process,bacteria can dead organic matter.made up of cellsbricks that are used to build housesbreak downthirty trillionhelp digestionthirty-nine trilli

18、onListening for detailed information Do you know about.?Have you heard of.?By the way,In fact,.Actually,.Speaking of which,.The useful expressionsChecking background knowledge Do you know about.?Have you heard of.?Adding information By the way,Actually,.In fact,.Speaking of which,.The useful express

19、ionsStudents workSpeakingCriteria Pronunciation and intonation 30Language(useful expressions)30Content 40Overall performance 100ScoreComment Students workMethodssurvey method experimental methodobservation methodassess to information method.Summary1.Get the main idea of the passage and list expressi

20、ons related to biodiversity by reading.2.Get the main idea of the listening material and write down useful expressions related to the topic of cells and bacteria.3.Act out the conversation about cells and bacteria.4.Make a new conversation about biodiversity.Option 1Work in pairs to discuss what you know about cells and bacteria.Option 2Work in pairs to talk about biodiversity in different regions of China,using the words and expressions in this section.Homework