Unit 5The power of naturePeriod 1Warming Up，Pre－reading，Readingand ComprehendingAims:1．To learn about some disasters that are caused by natural forces，how people feel in dangerous situations and the ways in which humans protect themselves from natural disasters.2．To learn how the information is organized.教学过程Step 1Warming up1．Warming up by looking and talkingShow the following pictures to the students and let them know about the power of nature and talk about them.Sample expressions：What happened in the pictures above？Do you know any other natural disasters？Please work with your partners and make a list of natural disasters(such as earthquake，snowstorm，flood，drought)．Have you ever seen a volcano?(Some new words：lava erupt/eruption crater active/dormant/extinct volcanoes...)2．Warming up by reading the passage below.Step 2Pre－reading1.Can you imagine climbing into a live volcano in order to measure the temperature of the boiling rock inside？2．Encourage students to talk more about volcanoes by looking at the following pictures.Step 3Reading and comprehending1．Fast－reading：Ask students to skim the passage so as to get the key words and general idea of each paragraph and answer the question：What's the main idea of the text?2．Read the passage carefully and answer the following questions.(1)Why is a volcanologist's job important?(2)Why is the lava that flows on Mount Kilauea more dangerous than the actual eruption?(3)Why was it difficult for the writer to walk towards the edge of the crater?(4)What does the writer find impressive about volcanoes even after studying them for many years?(5)What did the author think it was when an eruption occurred?(6)Why did the scientists look like spacemen?Suggested answers：1．This passage is a first－person account of a volcanologist's experiences.The volcanologist described his exciting job and wrote down his first sight of an eruption.2．(1)V olcanologists study volcanoes so that they can warn people when the volcano is going to erupt and so save many lives.(2)The lava flows down the mountain and can cover up or burn villages in its path.The rocksthat erupt from the volcano usually don't damage anything because no one lives near the crater.(3)The author was wearing special protective clothing that made it difficult to walk.(4)The author finds their beauty and their potential to cause great damage very impressive.(5)He thought it was an earthquake.(6)Because they wore white protective suits that covered their whole body.3．Ask students to scan for detailed information and discuss the following question with their partners and be prepared to report to the class.Question：Having learned a little more about the work of a volcanologist，do you think it is an occupation you would enjoy？Give you reasons.Suggested answers:No，I probably wouldn't enjoy this job because I wouldn't have to live in other countries and I don't like being in dangerous situations，either.Above all，I'm not very good at science.ORY es，I'd love to do a job like this because I would enjoy working outside and I think I would enjoy the adventure.It would be exciting to meet people from different countries and I would feel good about helping people avoid danger.Step 4Language studyDealing with any language problem if any(words or sentences students might not understand)to help the students to have a better understanding of the text.Step 5Listening，reading aloud and underliningAsk students to read the passage aloud to the tape and let them pay attention to the pronunciation of each word and the pauses within each sentence.Tell them to pick out all the useful expressions or collocations from the passage while reading and copy them to the notebook after class as homework.Collocations：make one's way，a live volcano，be about to do，look down into，out of the way，be covered with，burn to the ground，attach...to...，compare...with...，run out of Step 6Structure analyzingAfter reading，ask students to discuss the text structure.Keys for reference：This passage is a first－person account of a volcanologist's experiences.The volcanologist described his exciting job and wrote down his first sight of an eruption.The first paragraph introduces the topic and the theme of the text.The rest of the text presents the information in chronological order.A feature of an account of a volcanologist's experiences is the abundance of time expressions.The last sentence of the report functions as a conclusion.In addition，each section begins with a topic sentence.Step 7RetellingAsk students to talk about the volcanologist's experiences in their own words.Give them some key words and expressions.Then let them try to retell the passage.Step 8Homework1．Learn the useful new words and expressions in this part by heart.2．Try to find more pictures showing natural forces and talk about them.Step 9Reflection after teachingPeriod 2Language Study (1)Aims:To get the students to learn to use the following important new words and phrases freely：absolutely，make one's way，alongside，appoint，wave，suit，potential，actual.教学过程Step 1Revision1．Check the homework exercises.2．Ask some students to say something about the power of nature.Step 2Reading and findingGet students to read through Warming Up，Pre－reading，Reading，Comprehending and Learning about Language to underline all the new words and useful expressions or collocations in these parts.Read them aloud and copy them down in the exercise book.Step 3Practice for useful words and expressions1．Turn to Page 36.Go through the exercises in Discovering useful words and expressions with students and make sure they know what to do.2．Give them several minutes to finish the exercises.They first do them individually，and then discuss and check them with their partners.3．Check the answers with the whole class and explain the problems they meet where necessary.Step 4Vocabulary study1．alongside(P34)【原句再现】I travel to unusual places and work alongside people from all over the world.我跑的地方是稀罕奇特的地方，和我一道工作的人来自世界各地。