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1、2022年高中英语（人教大纲）第三册：Unit4 Green world(第二课时)Teaching Aims:1.Get the students to learn and master the new words and expressions:make attempt to do sth.,classify.into,group,have an appetite for.,on a large scale,involve in,abandoned2.Get the students to learn the whole text and grasp the main idea of it
2、 to improve their reading ability.3.Learn the fine quality of the scientists in the text.Teaching Important Points:1.Master the usages of the useful words and expressions above.2.Improve the students reading ability.Teaching Difficult Points:1.The usages of some words and expressions.2.How to train
3、the students reading ability in learning the text.Teaching Methods:1.Explanation to get the students to have a clear idea.2.Discussion to get the students grasp the main idea.3parison to get the students to understand the text easier.Teaching Aids:1.a puter2.a courseware3.a tape recorderTeaching Pro
4、cedures:Step Greetings and Lead-inTeacher greets the whole class as usual.T:In the last period,I told you to describe the process of planting and growth of the young plant.Now Ill let one student do this before class.Zhang Jian,do this,please.(Teacher asks three students to do the description.Then t
5、eacher and students learn the new words and expressions of this period.Teacher asks one student to read them and then let another student correct the mistakes if there are any.In the end,teacher gives brief explanations if necessary.)Step Fast-reading (Show the pictures of Michurin and Darwin.)T:Do
6、you know the two scientists?Ss:Yes.They are Michurin and Darwin.T:Which country did they e from,do you know?Sa:Michurin was a Russian and Darwin was a famous British naturalist.T:What are they famous for?Sb:Michurin is famous for grafting plants and Darwin is famous for his book,On the Origin of Spe
7、cies.T:(Show the following on the screen.)In this class,well learn about some other scientists.They are Carl Linnaeus,Daniel Solander and Joseph Banks.Read the text fast and try to grasp the main idea of the whole text.Then do the exercises on the screen.You should write the ans-wers on a piece of p
8、aper.Later,Ill collect the first five pieces.Read the whole text and then choose the best answers.1.In the sixteenth century,botany was a branch of_.A.biologyB.physicsC.astronomyD.medicine2.Which of the following sentences is true?A.Linnaeus contribution to science was quite small.B:All of Linnaeus
9、ideas were pletely new.C.Before Linnaeus there was no system to classify plants.D.Linnaeus system was simple and clear.3.Joseph Banks chose a career in science because_.A.he thought that was a good way of making moneyB.he was interested in botanyC.his father had died when he was only eighteen years
10、oldD.he was very wealthy4.The members of the Royal Society abroad the Endeavour included_.A.Joseph Banks and James CookB.Carl Linnaeus and Joseph BanksC.James Cook and Daniel SolanderD.Daniel Solander and Joseph Banks5.Joseph Banks interests lay in _.A.astronomy and botanyB.botany and medicineC.agri
11、culture and botanyD.geography and economy (Students read the text and then do the exercises.Later,teacher collects the first five pieces of answers,check them and gives them back to the students.)T:Now lets check the answers.Sc,read your answers,please.Sc:The first answer is “D”;the second “B”;the t
12、hird “B”;the fourth“D”,and the fifth “C”.T:Is he right?Ss:Yes,his answers are all right.Step ReadingT:(Teacher shows the following on the screen.)Now read the text again and then discuss the questions on the screen.Have a discussion with your partner and later well check the answers.(Teacher goes in
13、to the students and joins in the students discussion.)Answer the following questions:1.What were the goals of James Cooks first voyage around the world?2.Why did Joseph Banks have to supply his own money to equip part of the expedition?How much did he pay?3.How did scientists classify plants before
14、Linnaeus?How did Linnaeus do this?4.What did the word “appetite” in the third paragraph mean?5.What could be a possible explanation for the name “strawberry”?6.Why was Carl Linnaeus important to the history of botany as a science?7.Give at least three examples to show Banks great contributions to hi
15、s country and science.T:(After a few minutes.)Are you ready?Ss:Yes.T:Now who will give us the first answer?SD:Ill answer the first question.They had three goals.The first goal was to observe the planet Venus when it passed across the sun.This would get the astronomers to have a chance to work out the distance between the earth and the sun.The second goal was to record,classify and describe all plants and animal life observed during the trip.The third goal was that Captain Cook was given secret inst
