1、2014春季英语人教版新课标必修4U2授课教案(2)Period 2Learning about LanguageThe General Idea of This PeriodThis period is about the useful words,expressions and structures learned in the reading part,from the exercises in this period,the students can consolidate what they learnt in the reading part,and learn the gramm
2、ar about the -ing form as a noun.Teaching Important PointsLearn how to use the -ing form as a noun.Teaching Difficult PointsLearn to use the -ing form as a subject as well as an object.Teaching MethodsAsking-and-answering activity to check the students answers of the exercises;individual,pair or gro
3、up work to finish each task.Teaching AidsA multi-media computer A blackboardThree Dimensional Teaching AimsKnowledge and SkillsLearn some key words:trial,consider,prove,tell the truth,pretend,think highly of,besidesLearn some important drills:I think highly of those who are searching for the Amber R
4、oom.Besides,my father once told me that any person who finds something could keep it.I must say that I agree with you.I must say that I dont agree with you.Help the students learn how to use the -ing form as a noun.Enable the students to learn how to make judgments and give their opinions.Process an
5、d StrategiesThe teacher may lead the students to sum up some grammatical items themselves.Give some necessary explanation.Feelings and ValueThrough the studying of this part the students will know more about the -ing form as a noun.Besides,their ability of transference will be strengthened.Teaching
6、ProceduresStep 1 Revision1.Greetings.2.Ask the students to use the first person to retell the passage about Dr Yuan,and ask them to try to use the proper conjunctions.Step 2 Useful words and expressionsT:From the reading part,we can find some useful words and expressions.So now please find the words
7、 and expressions that means the same from the text.(Ex.1 on Page 11)After two minutes,the teacher begins to check the answers and give the right answers:Suggested answers:1.sunburnt2.hunger3.rid.of4.expand5.circulate6.lead a.life7.would rather8.thanks to9.struggle10.exportT:Now Lets come to Ex.2.Ple
8、ase complete the passage with words and expressions from the previous sections,then Ill ask you to give me the answers sentence by sentence.After several minutes,the teacher ask the students to give their answers.Suggested answers:1.prove2.would rather3.live a4.life5.rid6.of7.output8.increased9.sunb
9、urntT:How about Ex.3,have you found the answers?Id like to ask some of you to read the sentences and then give me the answers.Suggested answers:1.super2.satisfied3.strain4.exported5.suitableStep 3 Discovering useful structuresT:Lets come to discovering useful structures,at first lets finish the exer
10、cises in this part.Do you know what does “ even a poor person can have a wish” mean?S:It means “Wishing for things costs nothing.”T:Very good!Now please rewrite the sentences in Ex.2 on Page 12.After five minutes,the teacher checks the answers.(Ss answer the questions one by one.)Suggested answers:1
11、.Helping people in need of help is nice.2.Growing hybrid rice isnt easy.3.Learning more about farming isnt difficult.4.Doing research in the countryside isnt easy.5.Getting rid of hunger is very important in some African countries.6.Explaining this again is important or we will get confused.T:Do you
12、 think its very easy to learn about the -ing form as the subject?But how about the -ing form as the object?Now Id like to check the answers of Ex.3 on Page 12.(Ss give the answers one by one.)Suggested answers:1.Dr Yuan likes talking to rice growers about his work.2.He continued doing research until
13、 a better strain of rice was found.3.Many city kids look forward to visiting the countryside.4.Not all students enjoy working in the fields.5.They started producing hybrid rice in 1974.6.I remember meeting the scientist while he was in Beijing last time.Step 4 GrammarT:Today,we are going to learn th
14、e v.-ing as a noun.So at first who can tell me what a noun can be used as in a sentence?And please give me some examples.S:It can be used as subject.For example:Smoking is harmful to our health.T:Now I think you have known how to use the v.-ing as subject.But how about others?S:It can also be used a
15、s object.For example:I have forgotten seeing this film.T:You are right.The v.-ing form can be used as object,too.Now lets come to know more about it.T:Very good.(The teacher may give a systematical explanation of the grammar.)Step 5 Homework 1.Finish the related exercises on Workbook.2.Prepare for t
16、he next class.3.Finish the exercises about the -ing form as the subject and object.The Design of the Writing on the BlackboardUnit 2Working the landPeriod 2Learning about language1.chemical adj.化学的;关于化学的chemistry n.化学2.Phrases that can be used with the -ing form:be good at;care (little) about;dream
17、of;devote.to;see the need for;be afraid of;be concerned about;be interested inRecord after TeachingActivities and ResearchWhen leading in the grammar part,you may give the students some examples about the -ing form as a noun and encourage the students to sum up the grammatical rules.Then the teacher
18、 may ask the students to make up as many sentences as possible to consolidate it.Reference for TeachingGrammar选作作业-阅读理解When you hear the word “farm”，chances are your picture of rolling hills in the country covered with cows and corn.But some scientists，engineers and city planners say the farms of th
19、e future could be indoors inside skyscrapers(摩天大楼) in the worlds most populated cities.It might sound crazy，but in fact，some of the technology for growing crops indoors already exists.The National Aeronautics and Space Administration(NASA)，has been experimenting for years with methods for growing fr
20、esh fruits and vegetables on the moon or even on Mars.Bringing farming indoors solves a number of problems.First，traditional farming takes up a lot of land.By the year 2050，the world population will grow by another three billion.As populations grow，the land available for farming decreases.Government
21、s are now wondering where we will grow the food for all these people.Despommier，an ecologist at Columbia University，and his colleagues say “vertical farming”growing crops in skyscrapers tens of stories highis the answer. Cities that grow their own food also would become more selfreliant and no longe
22、r be at risk of natural disasters，weather instability(不稳定) or insect pests(害虫)“You can control everything indoors.You cant control anything outdoors.” Despommier says.Vertical farms dont exist yet.Their supporters say a welldesigned vertical farm could be selfreliant，able to recycle water，compost(将做
23、成混合肥) crop waste，and use gases given off in the process to heat the building.Even the waste of the livestock(牲畜) living in the building could be recycled as a source of energy.But some believe making the move to vertical farming will not be so easy.“I would say it is going to be tough，”says Gene Gia
24、comelli，who heads up the Controlled Environment Agriculture Center at the University of Arizona in Tucson.It can be tricky to regulate climate conditions indoors，he says.Keeping the correct balance of humidity(湿度) can be especially challenging and plants have different weather and lighting requireme
25、nts.Tomatoes like warm，sunny weather，while greens like lettuce prefer cooler temperatures.And nearly all crop plants require lots of sunlight.Copying sunlight is challenging，but scientists are learning how to make artificial lights that produce the colors，or wavelengths，of light，especially red and b
26、lue，that crop plants need.Still，artificial，electric lights present their own challenges.Overhead lights are inefficient，but more efficient(高效能的) lighting systems are still too expensive for widespread use.Thats not to say these challenges wont be overcome，but it will take time.Most experts suggest i
27、t would be anywhere between five and fifteen years before the first vertical farms could be created. 60What does the passage mainly talk about?AThe ways to solve the food problem of the world.BA new farming technology“vertical farming”CThe main problems “vertical farming” is facing.DThe advantages “
28、vertical farming” will bring us.61To the future of “vertical farming”，the author is _according to the passage.Adoubtful BpessimisticCoptimistic Dproud62Which of the following descriptions does NOT fit a welldesigned vertical farm?AThe water in it can be recycled and the crop waste can be composted.B
29、Waste of the livestock can be recycled as a source of energy.CThe buildings in which a vertical farm lies should look beautiful.DThe gases given off in the process can be used to heat the building.63The following are the benefits of “indoors farming”EXCEPT that_.A“indoors farming”can help people to save a lot of landBcrops can be protected from the harm of natural disasterCcrops will be free from the damage caused by insect pestsD“indoors farming” can help people save a lot of money【参考答案】60B61C62C63D