导学案选7unit3(教师)

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1、导学案（B7U3）(教师)预习案一、熟读短文MarkandaSeal马克和海豹Markrentedanaccommodationwithhispensionneartheshore.Hepaidannualvisitstheretoenjoythevividbeautyinthedepthsofthepuresea.马克用他的退休金在海岸边租了一间住所，每年都去那儿欣赏纯净的大海深处那生动的美丽。Once,withhisunderwatertelescopeandflashlight,Markdivedalongtheboundarybetweenthesteepreefandthea

2、reaofseaweedconservation.Suddenly,anawesomeAntarcticsealwithsharpteethappearedoppositehim.Everycellinhisbodywasscaredtodeath.Butsoon,hewasawarethathewasn’tthetargetofanattack.Withaneatwoundinitslipcausedbyashark,thisgreysealwaswashedupsidedownbythetidestimeaftertime.ButittriedtojogMarkasiftourge

3、himtohelpit.SoMarkabandonedfleeingaway.Withitsteamwork,Markusedanettodragthesealtotheshallowwater.Withoutpausinghehelpeditoutafterasimpleoperationandsettleditinanarrowcavebytheseaside.Everytimehebroughtittastyfish,itwouldyellandsuckhishandshappily.Witnessessaidtheiranecdotesreflectedamagicdimens

4、ionoftherelationshipbetweenhumansandanimals.有一次，马克带着他的水下望远镜和手电筒，潜到陡峭的暗礁和海草保护区间的分界线。突然，一只长着尖利牙齿、使人畏惧的南极海豹出现在他对面。马克吓坏了，但是很快，他就意识到，他不是攻击的目标。这只灰色海豹的唇上有道鲨鱼咬出的整齐伤口，还时不时地被潮水冲得头上脚下。尽管如此，它却总是努力轻轻碰撞马克，似乎在催促他帮助它。于是马克放弃了逃跑。在这只海豹的合作下，马克用一张网把它拖到浅水区，并毫不停歇给它动了一个简单的手术，帮助它解决了问题，然后将它安置在海边一个狭窄的洞里。每次当马克给它带来鲜美可口的鱼时，它

5、就会高兴地大声叫唤，还吮吸他的手。目击者都说他们的轶事映射出人与动物关系中奇妙的一个方面。二、背诵短文类型：对比说明。典例：说明两种事物或两种产品的优劣。模板：Solarcarsarecarsthatusesunlightforpowerwhilecommoncarsusegasorpetrolastheirfuel.Bothofthemhaveadvantagesanddisadvantages.Solarcarsaresafeandclean，buttheyhavelowpower，theyareslowandtheycannotrunatnight.Commoncarshaves

6、trongpowerandtheyareconvenienttouse，buttheypollutetheenvironment.Ithinkweneedtodevelopfuturetechnologiestoimprovethepowerforsolarcarsandtousecleanenergyforcommoncars.三、词汇(一)单词1.__________n.协作;配合2.________adj.狭窄的;有限的3.____________n.关系;血缘关系4.________n.目标;受批评的对象135.________vi.&n.暂停;中止6._________vt.

7、目击n.目击者7._______vt.拖；拉；扯8.___________vt.放弃；抛弃9._______v.吮吸10.______vt.逃跑;逃避vt.逃离11.________v.反映;反射;思考12._______adj.锐利;敏捷的13._________adj.浅的;肤浅的14.______adj.好的;整齐的15.___________adj.使人敬畏的（二）短语翻译1.___________帮助摆脱困境或危难2.________