1、英语高三新人教版选修九：Unit 4 全单元教案 Unit 4 Exploring plantsPeriod oneAim:To train the students ability of listening and speaking.Contents:Step I Warming upQ1 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
2、 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
3、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 t
4、o 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 twoAim:To make students understand the text.Plant exploring in the 18th And 19th centuries.Contents:Q1 What is each paragra
5、ph 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 collect
6、ion?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 tr
7、ansported 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 bo
8、tanical expeditions6 come into conflicts withbe in conflicts with7 accompany sb: keep sb company8 on purpose / by design / by intentionwith the purpose of9 come acrossrun into / acrossmeet with10 keep sth alive11 make a trip to s.p.12 dress as13 instyle14 result inlead tobring about15 be excited wit
9、h16 have a vast variety of17 not onlybut alsonot alonebut alsonot merely/ simply but alsoA as well as BA and B as well18 distant adj. far away in space or time 远的，遥远的19 distance n. in the distancefrom the distanceat a distancekeep sb. a distance20 scale n. 1) balance for weighing磅秤2) relative size,
10、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 court3）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 from
