人教版高中英语选修八Unit2Cloning（2）学案

选修八Unit2Cloning班级姓名小组________第____号【学习目标】Knowledgeaims:1．Getstudentstolearntheusefulwordsandexpressionsinthisunit.2.Letstudentslearnabouttheprocedureofcloning.【学习重点】1.Developstudents’differentreadingabilities.2.Enablestudentstotalkabouttheprocedureofcloning.【学习难点】1.Letstudentslearnmoreaboutthecloningtechonology;2.Getstudentstolearndifferentreadingskills,especiallythereadingabilityofunderstandingimpliedmeaningoftheauthor.【学情分析】Studentsneedtoimprovetheirvocabularyability.基础知识导入Wordsdictation1________2________3________4________5________6________7________8________________9________10________11________12________13________14________15________16________17________18________19________20________二.自主学习提问展示快速阅读课文，然后完成下列问题。1.Whatisthemainideaofthepassage?Thepassagetellsusthatanimalcloningraised__________andscientistsarenotsureaboutits______.2.Whatisthewritingstyle?Expositive(说明文) Descriptive（记叙文）Argumentative（议论文）3.段落排序___Cloninghastwomajorusesandsuccessfulclone.___.Cloningisawayofmakinganexactcopyofanotheranimalandplant(definition)___.TheeffectofDolly.___.Itisforbiddentoclonehumanbeings.___.TheproblemsofDolly.4.TrueorfalseFourfemalesheepparticipateinthecloningofanewsheep.Electricityisneededintheprocedure.SheepBprovidesasomaticcellfortheclone.ThelambistheexactcopyofsheepA三小组讨论，提问展示Inpairs,lookatthesepicturesanddiscusswhichonesarenaturalclonesandwhichonesaremanmake.Explainhowtheydiffer.differvi.different,differencediffer是不及物动词,主要有两个义项：“不同,相异；不同意,意见相左”。1).sb.differfrom/withsb.on/aboutsth.;2).sth.andsth.differin…;3).sth.differfromsth.【练习】她的方法跟我的没有很大不同。Hermethod____________________________.现代飞机跟早期的在很多方面有所不同。Modernairplanes_____________earlyones____manyaspects.对于如何解决问题,我跟他的意见不一致。I_____________howtosolvetheproblem.2.这种现象也发生在动物身上，从同一个原生卵产生性别与外貌相同的双胞胎也是克隆。【填空】Italsohappensinanimalswhentwins______________________________areproducedfromthesame____________.3.研究克隆的科学家们沮丧地发现多莉得的病更容易发生在年老的动物身上。【填空】Cloningscien