Unit7Thesea【美文阅读】你对大海了解多少？阳光照耀下她妩媚多姿；狂风暴雨下她凶猛狂暴，除此以外还有什么呢？Thefirstthingtorememberisthattheseaisverybig.Whenyoulookatthemapoftheworldyouwillfindthereismorewaterthanland.Theseacoversthreequartersoftheworld.Theseaisalsoverydeepinsomeplaces.Itisnotdeepeverywhere.Somepartsoftheseaareveryshallow.Butinsomeplacesthedepthoftheseaisverygreat.Thereisonespot，nearJapan，wheretheseaisnearly11kilometersdeep！Thehighestmountainintheworldisabout9kilometershigh.Ifthatmountainwereputintotheseaatthatplace，therewouldbe2kilometersofwateraboveit！Whatadeepplace!Ifyouhaveswuminthesea，youknowthatitissalty.Youcantastethesalt.Rivers，whichflowintothesea，carrysaltfromthelandintothesea.Somepartsoftheseaaresaltierthanotherparts.Thereisonesea，calledtheDeadSea，whichisverysalty.Itissosaltythatswimmerscannotsink！FishcannotliveintheDeadSea!Inmostpartsofthesea，thereareplentyoffishesandplants.Somelivenearthetopofthesea.Otherslivedeepdown.Therearealsomillionsoftinylivingthingsthatfloatinthesea.Thesefloatingthingsaresosmallthatitishardtoseethem.Manyfishlivebyeatingthese.Theseacanbeverycold.Diverswhogodeepdownintheseaknowthis.Onthetopthewatermaybewarm.Whenthedivergoesdownwards，theseabecomescolderandcolder.Anotherthinghappens.Whenthedivergoesdeeper，thewaterabovepressesdownonhim.Itsqueezes(挤)him.Thenthediverhastowearclothesmadeofmetal.Buthecannotgoverydeep.Somepeoplewhowantedtogoverydeepusedaverystrongdivingship！Theywentdowntothedeepestpartoftheseainit.Theywentdowntoadepthofelevenkilometers!【诱思导学】1．WhydoestheauthormentiontheseasomewherenearJapan?2．ArethereanyfisheslivingintheDeadSea?3．Whycan'tpeoplegoverydeepinthesea?【答案】1.Toshowthattheseainsomeplacesisverydeep.2．No，therearen't.3．Becausethepressureofthewateratgreatdepthsisgreat.PeriodⅠPreviewing(教师用书独具)●课标解读本课时主要是通过学生对学案所给内容的学习，了解下一课时即将出现的词汇，初步了解课文以及相关的背景知识，将对下一节课内容的全面理解起到了铺垫作用。●教学地位此部分内容是是对下一课时的感悟和预习，合理利用本学案，能大大提升下一课时的课堂效率，有效提升学生学习英语的热情，促进课堂的积极活跃程度，并能在课上能与老师形成较为默契的配合。(教师用书独具)●新课导入建议让学生讨论个人与大海的联系，直接导入新课。在设计这堂课时，要从激发学生的对大自然的热爱出发，介绍有关的背景知识，给学生布置具有一定挑战性的任务，让学生以大海人类共同的生存空间为题进行讨论或口头描述。●教学流程设计导入新课。⇒学生阅读“美文阅读”与“诱思导学”(见学案第1页)。⇒学生就“美文阅读”进行讨论，统一答案。⇓学生再次阅读课文(课本第8页)并完成“语篇理解”(见学案第2页)。⇐师生共同讨论并统一答案。⇐让学生快速阅读课文(见课本第8页)并完成“篇章结构”(见学案第2页)。⇓学生共同讨论，并让学生发表各自见解，最后统一答案。⇒学生再次仔细阅读课文(课本第8～9页)进行深度理解，并完成“课文缩写”(见学案第2页)。⇒老师指导学生讨论，共同找出答案。⇓让学生根据所给出的表格进行“自我评估”(见学案第3页)。⇐学生讨论，并让学生代表发表他们讨论得出的答案，老师予以更正。⇐让学生完成“知识初探”部分(见学案第2～3页)。⇓老师布置作业：让学生看课本第8～9页并完成课本第8～9页第1、3题，预习学案PeriodⅡ(见学案第3～10页)。Ⅰ.篇章结构根据P8的Reading部分，在表格中填入恰当的单词或短语，每空不超过3个单词TheVikingswerethefirst1.toreachAmerica.Betweenthe8thand10thcenturiesADTheycontrolledtheseasandcoastsof2..In3.ADAmancalledErictheRedwasforcedtoleave4.andreachedGreen...
