人教版高三英语选修9 Unit 4 Exploring plants 全单元教案.doc

Unit 4 Exploring plants Period oneAim:To train the students ability of listening and speaking.Contents:Step I Warming up Q1 What do you know about plants?Q2 Do you know what kind of plant dont have flowers?Q3 Do you know what kind of plant have roots that live in the air?Q4 Do you know what kind of plant need animals to pollinate them?Q5 Do you know what kind of plant grow on other plants?Q6 Do you know that people buy plants that come from other countries for their gardens?Q7 Do you know that a new plant does not always grow from a seed?Step II Listen and discuss:First give some photos of the plants and then ask students answer the following question.(Page 38) Q1 How would you describe each plant? Q2 What do you think is unusual about each plant? Q3 One of the pictures shows pitcher plants and another shows “Living stones” which picture shows which plant?Now listen to Mark，Gordon and Andrea telling their class about these plants. Which students talk about which plants?Listen again and complete the table with the correct information. 0Period two Aim:To make students understand the text. Plant exploring in the 18th And 19th centuries.Contents: Q1 What is each paragraph about? Q2 Write down the topic of each paragraph in your own words. Q3 What happened in these years? Complete the sentences on page 33. Q4 Answer there question in groups.1) Why was there a lot of plant collecting in the 18th and 19th centuries?2) How did French missionaries come to be plant collection?3) What were some of the negative aspects of plant collecting expeditions?4) Transporting plants over long distances was a big problem, why was this?5) Why did many plants fail to reach their destinations alive? Can you think of any other reasons?6) What important the survival rates of plants transported long distances? 0Period threeAim:To make students master the language points in this text.Contents:Phrases:1 date back to: go back to/date fromeg: This town dates back to the Rome time2 on a large scale3 take / find/ have/ show/ find interest in.4 take the opportunity of doing sth5 go on botanical expeditions6 come into conflicts with be in conflicts with7 accompany sb: keep sb company8 on purpose / by design / by intention with the purpose of 9 come across run into / across meet with10 keep sth alive11 make a trip to s.p.12 dress as 13 instyle14 result in lead to bring about15 be excited with16 have a vast variety of 17 not onlybut also not alonebut also not merely/ simply but also A as well as B A and B as well18 distant adj. far away in space or time 远的，遥远的19 distance n. in the distance from the distance at a distance keep sb. a distance20 scale n. 1) balance for weighing磅秤 2) relative size, extent, scope规模，程度 on a large / small scale大/小规模 on the scale of to按的比例 to a scale按一定比例 to a scale of to按的比例21 appeal to 1）恳求，恳请 I am appealing on behalf of the refugees.我代表那些难民提出恳求 He appeal to us for help.他恳求我们的帮助 2）诉诸，诉之于 Appeal to the law / a higher court 3）事物引起（人的）兴趣，有吸引力，投入所为 Does the film appeal to you? n. make an appeal to 吸引, 诉之于Sentence structures1. It was not until the eighteenth and nineteenth centuries that the exploration of the botanical world began on a large scale.2. Not only did Fortune introduce over 120 species of plants to western gardens but he also shipped 20000 tea plants fromPeriod FourAim:To make students understand the text Flowers and their animal pollinatorsContents:I. Questions:1) What is the text about?2) What do the pictures show you?3) What is the chart about?4) What is the advantage for animal of visiting flowers?5) Who do some plants need animals?6) How does an animal pollinate a flower?7) What is nectar?8) What kinds of animals are most flowers pollinated by?II. Language points1. over time 随着时间的推移over the weekend 整个周末里over these years 在这些年里2. reward sb with sth用回报某人3. attach to依附于上 4. pass on to把往下传 5. adapt to 使适应The spokesman adapts his speech to suit the interests of his audience.He has adapted to the climate here.6. describe as 把描述成7. guide sb to s.p.把领到8. land on 登陆9. provide sb. with sth向提供provide sth for vide for 养活，规定III. Difficult sentences1) Pollen becomes attached to the animals during its visit to a flower and is then