您正在看的高中一年级是:人教版高一Unit 19　Modern agriculture。 all the genes in the human body.

　　Some genes may be effective.For example,something might be wrong with the gene that makes blood clot(凝聚).An individual born with this defective gene could suffer serious hemorrhages(出血)or even bleed to death because his or her blood fails to clot.If scientists ever learn how to map all the genes in our bodies,they could determine whether or not an unborn child has any defective genes.They might even discover how to treat these genes before the child is born.

　　The First Period

　　Teaching Aims:

　　1.Improve the students' speaking ability by practising giving advice and making decisions.

　　2.Enable the students to master the eXPressions of giving advice and making decisions.

　　3.Get the students to learn more about agriculture.

　　Teaching Important Points:

　　1.How to eXPress oneself,using what is learned or given.

　　2.How to advise sb.to do something and how to make decisions.

　　Teaching Difficult Points:

　　1.The usage of some eXPressions.

　　2.How to improve the students' listening ability.

　　Teaching Methods:

　　1.Listening some materials to improve the students' listening ability.

　　2.Discussion to let the students eXPress themselves freely.

　　3.Group work or pair work to give every student a chance to eXPress themselves.

　　Teaching Aids:

　　1.a tape recorder

　　2.a projector and some slides

　　3.a computer

　　Teaching Procedures:

　　step Ⅰ.Greetings and Revision

　　T:Good morning,everyone.

　　Ss:Good morning,teacher.

　　T:Sit down,please.In this class,I'll check your homework first,Wang Ping,read your homework to us,…

　　(The teacher checks the students' homework and have a discussion with the students about the mistake Wang Ping made.Let the students have a clear understanding and correct it.)

　　step Ⅱ.Preparation for listening and speaking

　　T:Today,we're going to learn a new unit,Unit 19,Modern Agriculture(Teacher writes the following on the blackboard:Unit 19 Modern agriculture,the First Period).First,let's learn the new words of this period.Look at the screen:

　　New words:

　　produce n.产量、产物、农产品

　　effect n.结果、影响、作用

　　dike n.堤坝;排水沟

　　drought n.干旱

　　leader n.领导者

　　lead v.领导、带领

　　cane n.细长的茎、藤条

　　sugar-cane n.甘蔗

　　tobacco n.(烟草)制品;抽烟

　　local adj.地方的、当地的

　　(Teacher asks one student to read the new words,then corrects the mistakes the student made.)

　　Step Ⅲ.Warming up

　　T:Please turn to Page 32.Let's do Warming up.(Teacher shows the graphs on Page 32 on the screen.)Look at the two graphs and discuss the questions on Page 32.You can do it in pairs or groups.In a few minutes,I'll ask some students to talk about them.(Students begin to discuss the questions.And teacher goes and joins them.A few minutes later,teacher says the following.)

　　T:Are you ready?Who can give us a talk about the first topic?SA,how are people's eating habbits changing over the years?

　　SA:From the first graph,we can see that the eating habits of the people in our country have changed greatly.Before 1949,they had not enough to eat and often went hungry.Once natural disasters happened,a great number of people would die of hunger.Before the reforming and opening to the world,grain was still a big problem.People mainly lived on corn and few kinds of vegetables.Since the 1980s,especially the 1990s,people's eating habits have greatly improved.People can eat whatever they want.More and more people eat less grain,more meat and eggs and so on.More and more people turn their eyes to meat,eggs,milk and all kinds of green vegetables.

　　T:Why do you think this happens,SB?

　　SB:It is all because of the Party's good polic