选修八Unit 2 Cloning精讲巧练

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1、选修八Unit 2 Cloning精讲巧练Unit2Cloning目标认知　　重点词汇:differ,undertake,disturbing,castdown,objection,forbid,　　　　　　　accumulate,infavorof,obtain　　　重点句型：suchas/such…as的用法　　语　　法：同位语归纳　　精讲巧练　　differ　　【原句回放】Inpairs,lookatthesepicturesanddiscusswhichonesarenaturalclonesa

2、ndwhichonesareman-made.Explainhowtheydiffer.(P10)　　【点　　拨】differvi.tobedifferentfromsth.else表示“不同,相异”，常见的搭配有：Adifferfrom/withBon/aboutsth.　表示“关于某事A不同于B”，differin在……方面不同。　　如：　　Idifferwithhimonhowtosolvetheproblem.　　Theydifferwitheachotheronmoralstandards.　

3、　JapanesediffersgreatlyfromFrenchinpronunciation.　　【拓　　展】differencen.差异,差别；differentadj.不同的　　如:　　Therearemanydifferencesbetweenlivinginabigcityandlivinginthecountry.　　Theysometimeshavedifferentideasaboutliving,workingandplaying.　　常见词组：　　bedifferentfrom…　

4、与……不同　　makeadifference　　有很大差别,有很大的关系　　【随时练】Thoughtsofwesternersdiffermuch_______easternersinanumberofways.　　A.between　　B.betweenthose　　C.from　　D.fromthoseof　　Key:D　　undertake　　【原句回放】Theprocedureisdifficulttoundertake,ofcourse.(P11)　　【点　　拨】undertakevt.toa

5、greetoberesponsibleforajoborprojectanddoit表示“从事，着手做，承担”，undertaketodosth。许诺做某事；undertakethat…保证……　　如：　　Thelawyerundertookthecasewithouta17fee.　　IundertooktoteachthechildrenEnglish.　　Ican'tundertakethatyouwillmakeaprofit.　　【拓　　展】undertakingn.表示“任务，事业；许诺”　

6、　如　　Hewasrequiredtogiveawrittenundertakingnottodisclosethedetailsoftheircontract.　　Organizingaweddingisamajorundertaking.　　【随时练】Thethirty-storeybuildingisoneofthemostchallengingengineeringprojectstheyhaveever_______.　　A.undergone　　B.underlined　　C.undergr

7、ound　D.undertaken　　Key:D　　disturbing　　【原句回放】ThencamethedisturbingnewsthatDollyhadbecomeseriouslyill.(P12)　　【点　　拨】disturbingadj.makingyoufeelworriedorupset表示“令人不安的，令人烦恼的”，常用来修饰物；disturbedadj.表示“被扰乱的,不安的”，常用来修饰人。如：　　Itisverydisturbingthattherehasbeenanincr

8、easeincrimeinthelastsixmonths.　　Iamverydisturbedbythecomplaintsthathavebeenmadeagainstyou.　　Theyareverydisturbedchildrenwhoneedhelp.　　【拓　　展】disturbvt.表示“扰乱,弄乱，打扰”。　　如：　　Thehostwasquiteannoyedwhenhefoundoutthathisthingsonth