高中英语人教版选择性必修第三册UNIT4USINGLANGUAGE学案

Unit4UsingLanguage学案【本课目标】L掌握本课时出现的重点单词、短语和句型。2.通过对教材课文的阅读,在课文的具体情境中猜测词义,推测词性,了解重要词汇的基本用法。

【课文研读】Task1:FastReadingThetextmainlytellsusthat.Task2:CarefulReadingIJudgethefollowingstatementstrue(T)orfalse(F).()1.Theygotstuckontheislandforaboutfivemonths.()2.Forthegroupmembers,itwasboringtoeatthesamemealsdayafterday.()3.Manyofthembecameillbecauseoftheextremelycoldweather.()4.Thoughindifficulties,theystillkeptpositiveandoptimistic.()5.Thebestrewardfortheirperseverancewasgoinghomeandreunitedwiththeirfamilyandfriends.IIReadthetextandthenchoosethebestanswer.()1.WhydidtheyfeelaloneanddesperateontheElephantIsland?SomethingunexpectedhappenedtoShackletonandhisboat.Theydidn'thavewaterandfoodtosurvive.Theycan'tseekanyhelpfromothers.Theygotstuckinadifficultsituationandtheywereworriedwhetherthehelpcouldcome.()2.WhichofthefollowingstatementsisNOTtrueaccordingtothetext?TheycouldmakefirebyburningtreesonAntarctica.AgooddinnerandsomemusiccouldcheerthemupontheElephantIsland.Seaanimalsweretheironlysourceoffood.ThetemperatureschangedfrequentlyonAntarctica.()3.OntheislandtheyfacedmanystrugglesEXCEPT.lackoffoodstrongwindschangingweatherD.seacreaturesTask3:Study-readingWhatiftheyweredelayed?【句式分析】Whatif…？倘若……怎么办？［句意翻译］Itwasalmostasdangeroustobecometoohotfromwearingtoomanyclothesastobecometoocoldfromwearingtoofew.【句式分析】tobecometoohotfromwearingtoomanyclothes（穿太多衣服变得太热）和tobecometoocoldfromwearingtoofew（穿太少衣服变得太冷）进行比较;as…as…"同一样”。［句意翻译］Whenwewerefinallyrescued,wefeltsuchreliefandjoythatmanyofuscouldnothideourtears.【句式分析】such・・,that…如此以至于［句意翻译］【自主学习】giveoff放出（热、光、气味或气体）（课本P44）Thisgaveoffoily,blacksmoke,butitstayedburningeveninstrongwinds.它会放出有油的、黑色的烟,但是就算在强风中,它也能保持一直燃烧。giveaway颁发，分发；泄露（秘密）；赠送giveup放弃；交此让出；认输givein（tosb）（向某人）屈服，让步giveout用完;分发；公布;停止运行giveback归还;送回；使恢复givewayto向让步；被代替【练一练】（1）Thoseflowerslookprettybutdon'tgiveoffanicesmell.这些花看似漂亮，但是气味并不好。（2）Thismilkmustbebad,foritisgivingoffanastysmell.这个牛奶一定变质了，因为它散发出一种令人恶心的气味。⑶短语填空©Peoplemuchmorebytheirgesturesthanbytheirwords.②Bicyclesareenvironmentallyfriendlybecausetheywon'twastegas.③Facedwithdifficulties,theyneverbuttrytheirbesttofindawayout.④Thetruckrefusedtothecar,sotheycausedanaccident.(4)完成句子Ifplasticandrubberareburnt,.如果塑料和橡胶被焚，它们就会放出有毒的气体。commitment/?,(apromisetodosthortobehaveinaparticularway;thewillingnesstoworkhardandgiveyouenergyandtimetoajoboranactivity)承诺；保证；奉献(课本P45)Andhepaidusbackbyhiscommitmenttosaveusfromaslowbutpainfuldeath,并且他以他拯救我们免于缓慢而痛苦的死亡的承诺回报了我们。(l)makeacommitmentto…对做出承诺commitmenttosb/sth奉献/投入(2)commitv.犯(罪或错等)；承诺，保证commitoneselfto(doing)sth作出决定；致力于，献身于(做)某事becommittedto(doing)sth专注于(做)某事(3)committedadj.尽心尽力的；坚信的；坚定的［温馨提示］commitoneselfto(doing)sth表示“专心致志于”，to是介词，后接名词、代词或动名词。【练一练】(l)Thehospitalhasmadeacommitmenttoprovidethebestpossiblemedicalcare.这家医院已经做出承诺要提供最好的医疗服务。(2)Theyarelookingforsomeonewitharealsenseofcommitmenttothejob.他们正在找一个对这项工作有献身精神的人。(3)Thegovernmentmustcommititselftoimprovinghealthcare.fThegovernmentmustbecommittedtoimprovinghealthcare.政府必须致力于改善医疗保健服务。(4)单句填空①Thisdevelopmentareaiscommittedto(create)aperfectinvestmentenvironment.②Thecompany,s(commit)toprovidingqualityatreasonablepriceshasbeenvitaltoitssuccess.⑸完成句子①(当你对一个孩子做出承诺时)，youhavegottosticktoit.②Inrecentyears,thecommunity(致力于创造一个更好的环境)forustolive,toworkandtoenjoylife.【句型分析】(课本P44)Whatiftheyweredelayed?如果他们被耽搁了怎么办？Whatif-?【句式点拨】"Whatif…？”常用来提出假设、建议、邀请、要求等，意为“倘使……将会怎样/如果……将会怎样？”后面经常跟一般现在时,有时根据语境判断也可以跟虚拟语气。【相关拓展】(l)Howcome…？怎么会?/怎么回事？(2)How/Whatabout•?怎么样？(3)Whatfor?为什么/为何？(4)Sowhat?那又怎么样？(5)Whynot…？为什么不?【练一练】(1)WhatifIcan'tunderstandthelocalpeoplewhenIgettoAmerica?我到美国的时候要是听不懂当地人说话怎么办呢？(2)Howco