北師大版高中英語選擇性必修第二冊UNIT6 Section Ⅰ Period4課件

Period4

UNIT6

THEMEDIA主題語境人與社會——科技發(fā)展與信息技術(shù)創(chuàng)新

SectionⅠ

TOPICTALK&LESSON1課時學(xué)案單元語法講練it的用法一、it作人稱代詞1．指上文提到的事物，以避免重復(fù)Xi'anisabeautifulcity，isn'tit?西安是個美麗的城市，不是嗎？2．指動物、嬰兒(未知性別的嬰兒或孩子)或不明身份的人—Isthisyourdog?—No，itisn't．——這是你的狗嗎？——不是。Hernewbabyistiny；itonlyweighs2kilos．她剛生的寶寶個頭很小，才兩千克重?！猈hoisitknockingatthedoor?—Itmightbethepostman．——誰在敲門？——可能是郵遞員。3．指天氣、時間、距離、環(huán)境等Itisalovelyday，isn'tit?天氣不錯，不是嗎？Itwasnearlymidnightwhenshecameback．她回來時已近午夜。Itwasveryquietinthecafé．咖啡館里非常安靜。Itishalfanhour'swalktothecitycentrefrommyhome．從我家到市中心有半小時的步行路程。二、it作形式主語1．it作形式主語代替動詞不定式(1)Itbe＋adj．＋(forsb．)todosth．此處的形容詞通常為描述事件的形容詞：easy，difficult，hard，necessary，unnecessary，possible，impossible，likely，unlikely，right，wrong，important，unimportant，legal，illegal，well-mannered，ill-mannered，polite，impolite，clear，obvious，certain，suitable，proper，fit，useful，useless，dangerous等。Itisillegal(forateenager)todriveacarwithoutalicence．(青少年)沒有駕照開車是違法的。(2)Itbe＋adj．＋ofsb．todosth．此處的形容詞通常為描述人的形容詞：kind，unkind，nice，rude，cruel，considerate，thoughtful，thoughtless，careful，careless，silly，foolish，stupid，clever，wise，crazy等。It'skindofyoutohelpmewiththeproblem．幫我解決這個問題，你真是太好了。(3)Itbe＋n．＋todosth．Itisourdutytoprotecttheenvironment．保護環(huán)境是我們的責(zé)任。2．it作形式主語代替動詞-ing形式短語It'snouse/nogood/nofun/awasteoftimedoingsth．Itisnousegivinghimsomeadvice．給他提建議沒有用。3．it作形式主語代替主語從句(1)Itis＋adj．＋從句Itisclear(obvious/true/possible/certain...)that...該句型中的It是形式主語，真正的主語是that引導(dǎo)的主語從句。Itisveryclearthathe'sroundandtalllikeatree．很明顯他又胖又高像一棵樹。(2)Itis＋v．-ed＋that...＝sb．/sth．is＋v．-ed＋todoItissaid(reported/learned/believed/thought/known/told/hoped...)that...該句型中的It仍是形式主語，真正的主語是that引導(dǎo)的主語從句。ItissaidthathehascometoBeijing．據(jù)說，他已經(jīng)來北京了。Itisreportedthatanotherearthsatellitehasbeenputintoorbit．據(jù)報道，另一顆地球衛(wèi)星已發(fā)射進軌道。(3)Itis＋n．＋that...Itisapity(ashame/anhonour/agoodthing/afact/asurprise...)that...在該句型中，如果表示出乎意料等情感，that后的從句一般用虛擬語氣，即謂語動詞用“should＋動詞原形”，should可省略；沒有這種意義時，則不用虛擬語氣。Itisapitythatsuchathing(should)happeninyourclass．這種事竟然發(fā)生在你們班上，真是遺憾！Itisapitythatheisill．他生病了，真遺憾！[即時訓(xùn)練1]單句語法填空/完成句子①___wasveryquietinthegarden．②Whereismydictionary?Ileft____

rightonthedesk．③Youcanlumpthathatifyoudon'tlike__．④人們認為這是迄今為止發(fā)現(xiàn)的最早的，也是最大的古代造紙作坊。_______________thatitistheearliestandlargestancientpaper-makingworkshopsiteeverfound．ItititItisbelieved三、it作形式賓語1．it作形式賓語代替動詞不定式短語v．＋it＋adj．/n．＋(forsb．)todosth．Hemakesitarulenevertoborrowmoneyfromothers．他的規(guī)矩是從不向別人借錢。Iconsideritadvisabletotellherbeforehand．我認為還是事先告訴她好。2．it作形式賓語代替動詞-ing形式短語v．＋it＋nogood/nouse/novalue/worthwhiledoingsth．IthinkitnogoodspendingtoomuchtimewatchingTV．我認為花太多時間看電視是沒有好處的。3．it作形式賓語代替從句v．＋it＋adj．/n．＋從句Weallthoughtitapitythattheconferenceshouldhavebeencancelled．會議竟然被取消了，我們都感到很遺憾。4．固定搭配動詞appreciate/hate/love/like/dislike后面接if或when引導(dǎo)的從句作賓語時，中間需用形式賓語it，構(gòu)成“appreciate/hate/love/like/dislike＋it＋if/when從句”。Ihateitwhenhetalkswithhismouthfull．我討厭他嘴里塞滿了東西跟人說話。四、強調(diào)句型中的it1．肯定句Itis/was＋被強調(diào)部分＋that/who＋其他部分：ItwasinBeijingthatIsawthefilmMy

Motherland

and

Me．我是在北京看了電影《我和我的祖國》。2．否定句Itis/wasnot＋被強調(diào)部分＋that/who＋其他部分；Itis/wasnotuntil...＋that＋其他部分：ItwasnotforseveralyearsthatIhadanopportunitytoseehimagain．＝Ididnothaveanopportunitytoseehimagainforseveralyears．我好幾年沒有機會再見到他了。Itwasnotuntiltwelveo'clocklastnightthathewenttobed．＝Hedidn'tgotobeduntiltwelveo'clocklastnight．昨晚他12點才去睡覺。ItwasnotuntilIgotoffthebusthatIrealisedit．＝Ididn'trealiseituntilIgotoffthebus．直到下車我才意識到這一點。3．疑問句(1)強調(diào)句的一般疑問句只需把is/was提前，即：Is/Wasit＋被強調(diào)部分＋that/who＋其他部分：Wasityouwho/thatbrokethewindow?是你把窗戶打破的嗎？(2)強調(diào)句的特殊疑問句只需在一般疑問句前加上疑問詞即可，即：疑問詞＋is/wasitthat＋其他部分：Whowasitthatbrokethewindow?打破窗戶的是誰？Whenwasitthatyoucalledmeyesterday?你昨天是什么時候打電話給我的？[名師點津]

(1)不論強調(diào)句子的哪一部分，都可用that連接句子的其余部分。(2)被強調(diào)部分指人時，可用who取代that。(3)it之后的be動詞的時態(tài)通常要與that之后的謂語保持一致。[即時訓(xùn)練2]單句語法填空/完成句子①Ithink____

nogoodreadinginbed,whichdoesgreatharmtoyoureyes．②I'dappreciate____

ifyoutakemyinvitationintoconsideration．③他是昨天買的這本書嗎？

________________thatheboughtthebook?ititWasityesterday短文語法填空1．__wasasunnyday．Peterdecided2．_____(go)forawalktothepark，though3．__wastwomilesaway．4．__wassocomfortabletowalkonthestreet．Suddenly5．__begantorain．Hefound6．__hardtowalkthere．Sohehadtotakeabushome．Unfortunately,7．__wentwrong．Afterwaitingforaboutanhour，hehadnoalternativebut8．_______(walk)home．Whenhegothome，hewaswetthrough．Thus9．__wasadaythathewouldneverforget．Howawful10．____wastogothroughsuchanexperience!IttogoitItititittowalkititⅠ．單詞拼寫1．Allthe__________(候選人)forthepositionadvertisedinthenewspapermustdeliveraspeechrespectivelyonJuly15．2．Onlinelearningbenefitsmealotbecausesomanylearningmaterialsare_________(可獲得的)．3．TheSummerPalaceisagood___________(可供選擇的事物),whichissuretoleaveanequallydeepimpressiononus．課時分層作業(yè)（七）candidatesavailablealternative4．I_________(購買)thebookGone

with

the

Windfromthebookstoreyesterday．5．Recently,ourschooliscarryingoutaprogram,whichcallsoneveryonetothrowrubbishintotherightdustbinaccordingtothefour__________(種類)．6．Theresearchlackssolid_____(證據(jù))，andtherefore，itsconclusionsaredoubtful．7．Ifyouhaveanydoubtsaboutyourhealth，you'dbetter_______(咨詢)yourdoctoratonce．purchasedcategoriesproofconsult8．Afterthenewswas_________(廣播)thatourspaceshipreturnedtotheearthsafely，weallcheeredwithgreatjoy．9．Lastweekwehadaheated______(辯論)aboutwhethercitizenscanaccesstheScienceMuseumfreeofcharge．10．Youcanrelyonmetohelpyouwhenyouaretroubledby___________(復(fù)雜的)problems．broadcastdebatecomplicatedⅡ．單句語法填空1．Thiscreationattractedalotofattentionthankstoits_______(mix)ofmodernandtraditionalChineseelements．2．Theydebatedforoveranhour____

thequestionraisedbytheprofessor．3．Adirtyfaceisnotappropriate_____

theschoolphotograph．4．We'dappreciateitifyoucouldsparesometimetogothroughour__________(adapt)．mixtureonforadaptation5．Helovestocatchup____

thenewsafteratripabroad．6．Ididn'tknowwhethertointerprethersilence__acceptanceorrefusal．7．Teamworkisacknowledged__themostimportantaspectofanyenterprise．8．Inthe________(elect)lastweek,MrLiwasappointedleaderofthesecuritydepartmentbecauseofhisexcellenttalents．9．Youshouldgivethepolicedetailsoftheaccidentandthat's_________(precise)whatIwanttoknowaswell．10．Theyexpectedalltheirchildren_____(be)highachievers．onasaselectionpreciselytobeⅢ．閱讀理解AOnlineEventsVirtualBookTastingNeedanewbookforthemonth?Thencomeandgetatasteofavarietyofnewandpopularbooksfromourlibrariansthatareinourcollection!ThiseventwilltakeplaceoverGMeet．Registrationbeginsat9am,October28．DateandTime:3pm,November23Host:PelhamParkway-VanNestLibrary,onlineonlyAudience:teachers,teens/youngadultsLunchtimeVirtualHandwritingDenWhenwasthelasttimeyousentathank-younotetoabelovedone?Comeandputpentopaper．Write,chat,andshare(notrequiredbutencouraged)inasafe,welcoming,andfriendlyenvironment．DateandTime:1pm,November30Host:MuhlenbergCommunityLibrary,onlineonlyAudience:adultsFamilyStorytimeJointhestaffatFortWashingtonLibraryforalive,onlineprogramwithsongs,rhymes，andfavouriteread-aloudbooks．Boththeparent/caregiverandthechildmustbepresentduringtheentireprogram．DateandTime:10:30am,December7Host:FortWashingtonLibrary,onlineonlyAudience:children,infants(0－18monthsold),toddlers(18－36monthsold),preschoolers(3－5yearsold)TeenBookDiscussion:SportsBooksComeandhearaboutbooksaboutyourfavouritesportsandtellusaboutyours．ThiseventwilltakeplaceoverGMeet．Youmustregisterwithyouremailaddresstoreceivethelink,approximatelyonedaybeforetheprogram,toparticipate．DateandTime:3:30pm,December8Host:PelhamPublicLibrary,onlineonlyAudience:teens/youngadults*Pleasenote:Forallevents,registrationisrequiredonline．【語篇解讀】本文是一篇應(yīng)用文。文章介紹了四個網(wǎng)絡(luò)在線活動。1．WhocanattendLunchtimeVirtualHandwritingDen?A．Children． B．Toddlers．C．Adults． D．Teens．C

[細節(jié)理解題。根據(jù)小標題LunchtimeVirtualHandwritingDen下的“Audience:adults(觀眾：成人)”可知，成年人可以參加LunchtimeVirtualHandwritingDen。故選C。]√2．Whichlibraryoffersaneventaboutsportsbooks?A．PelhamPublicLibrary．B．MuhlenbergCommunityLibrary．C．FortWashingtonLibrary．D．PelhamParkway-VanNestLibrary．√A

[細節(jié)理解題。根據(jù)小標題TeenBookDiscussion:SportsBooks下的“Comeandhearaboutbooksaboutyourfavouritesportsandtellusaboutyours．”可知，“TeenBookDiscussion:SportsBooks”活動是關(guān)于體育書籍的，再根據(jù)后文“Host:PelhamPublicLibrary,onlineonly”可知，PelhamPublicLibrary主辦了關(guān)于體育書籍的活動。故選A。]3．Whatdothefoureventshaveincommon?A．Theyencouragepersonalexperience．B．Theytakeplaceintheafternoon．C．Theyareabouttellingstories．D．Theyneedonlineregistration．√D

[細節(jié)理解題。根據(jù)最后一段“Pleasenote:Forallevents,registrationisrequiredonline．”可知，這四個活動的共同之處是都需要在線注冊。故選D。]BPortiaKapraunhasalwaysseenunwelcomeadsonsocialmedia,usuallyfrommajorbrandspitching(推銷)herexpensivejewelryorvehiclesthatshe,asalibrarianinIndiana,couldnotafford．Ms

Kapraunwasnotinterested．Butshesoonsawtheadsagain．Andagain．Andagain．“Thesefeellikelow-endads，”shesaid．Inashakyadvertisingmarketinanuncertaineconomy,adsthatfewpeoplewanttoseesuddenlyseemtobeeverywhere．Advancementsindigitaladvertisingtechnologyweremeanttoimproveusers'experience．Peopleinterestedinshoesareintendedtogetadsforsneakersandboots,notrepeatedpitchespromotinggoldinvestments．Andthetechnologyissupposedtoremovemisleadingordangerouspitches．Butlately,onseveralplatforms,theoppositeseemstobehappeningforavarietyofreasons,includingaslowdownintheoveralldigitaladmarket．Asnumerousdeep-pocketedmarketshavepulledback,andthesoftermarkethasledseveraldigitalplatformstolowertheiradpricing,opportunitieshaveopenedupforlessdemandingadvertisers．Advertisingexpertsagreethatpoor-qualityadsappeartobeincreasinggreatly．Theypointtoavarietyofpotentialcauses:internaltroublesattechnologycompanies,weakcontentmoderation(審核),andhigh-leveladvertisersseekingotherchoices．Then,there'stheeconomy:Arecentsurveyof43multinationalcompaniesrepresentingmorethan$44billioninadvertisingspendingfoundthatnearly30percentplannedtocutbackontheirmarketingspendinglastyear．Otherfactorsarealsocontributingtoloweringadvertisingquality．Socialmediaadvertising,onceonlypractisedbyspecialists,isnoweasilyavailabletoanyone．Manyofthemareavoidingtargetedads—placementsintendedtoreachspecificaudiences,usuallyatahighercost—infavourofacheaperspray-and-pray(廣撒網(wǎng)式的)approachonline,hopingtocatchtheattentionofgullible(容易受騙的)orboredshoppers．“Majorsocialmediaplatformsarenowlikeamallthatusedtobegood”，CoreyRichardson,vicepresidentatamulticulturaladcompany,says．“Butnowthere'snolongeramallthere—it'sjustaplacesellinganything．”【語篇解讀】本文是一篇說明文。文章講述的是隨著數(shù)字廣告市場的低迷和經(jīng)濟的不確定性，用戶開始在社交媒體平臺上遇到越來越多低質(zhì)量的廣告，這些低質(zhì)量的廣告導(dǎo)致主要的社交媒體平臺逐漸變得沒有吸引力，只剩下了一些低價的廣告商。4．WhatmessagedoestheauthorwanttodeliverinPortiaKapraun'sstory?A．Repeatedadshaveastrongpowerofpersuasion．B．Socialmediausersoftenencounterunwantedads．C．Majorbrandsusuallyprefersocialmediaadvertising．D．Anuncertaineconomyleadstolowerlevelsofconsumption．√B

[推理判斷題。

根據(jù)第一段中的“PortiaKapraunhasalwaysseenunwelcomeadsonsocialmedia,usuallyfrommajorbrandspitchingherexpensivejewelryorvehiclesthatshe,asalibrarianinIndiana,couldnotafford．Ms

Kapraunwasnotinterested．Butshesoonsawtheadsagain．Andagain．Andagain．”可知，作者想在PortiaKapraun的故事中傳達的信息是社交媒體用戶經(jīng)常會遇到不想要的廣告。故選B。]5．Whatcanbeinferredaboutthe“l(fā)essdemandingadvertisers”mentionedinparagraph2?A．Theyareforcedtoexitinthedigitaladmarket．B．Theyhavebenefitedfromadvertisingexperts．C．Theyworkhardtoimprovetheirusers'experience．D．Theycannowadvertiseatamoreaffordableprice．√D

[推理判斷題。

根據(jù)第二段中的“Asnumerousdeep-pocketedmarketshavepulledback,andthesoftermarkethasledseveraldigitalplatformstolowertheiradpricing”可知，由于廣告市場放緩，財力雄厚的廣告資本退出市場，因此很多數(shù)字平臺降低了廣告的定價，從而導(dǎo)致很多要求很低的廣告商獲得了機會，即可以以較低的價格承接廣告，因此我們可以從lessdemandingadvertisers推斷出，他們現(xiàn)在可以以更實惠的價格做廣告。故選D。]6．WhatisCoreyRichardson'sattitudetomajorsocialmediaplatforms?A．Disappointed． B．Unclear．C．Favourable． D．Hopeful．√A

[觀點態(tài)度題。

根據(jù)最后一段中的“Manyofthemareavoidingtargetedads—placementsintendedtoreachspecificaudiences,usuallyatahighercost—infavourofacheaperspray-and-prayapproachonline,hopingtocatchtheattentionofgullibleorboredshoppers．‘Majorsocialmediaplatformsarenowlikeamallthatusedtobegood’，CoreyRichardson,vicepresidentatamulticulturaladcompany,says．‘Butnowthere'snolongeramallthere—it'sjustaplacesellinganything．’”可知，如今的社交媒體平臺傾向以更便宜的在線“廣撒網(wǎng)式的”方式投放廣告吸引購物者的注意，而非更高成本的定向投入廣告，因此降低了廣告的質(zhì)量，由此可推知，CoreyRichardson對當前社交媒體平臺的態(tài)度是失望的。故選A。]7．Whichofthefollowingisasuitabletitleforthetext?A．WhereIsSocialMediaAdvertisingHeading?B．WhatIsShakingUptheOnlineAdvertisingMarket?C．WhyAreYouSeeingSoManyBadDigitalAdsNow?D．HowAreTargetedAdsImpactingYourPurchaseDecisions?√C

[標題歸納題。通讀全文，尤其是第二段中的“Butlately,onseveralplatforms,theoppositeseemstobehappeningforavarietyofreasons,includingaslowdownintheoveralldigitaladmarket．Asnumerousdeep-pocketedmarketshavepulledback,andthesoftermarkethasledseveraldigitalplatformstolowertheiradpricing,opportunitieshaveopenedupforlessdemandingadvertisers．”和第三段中的“Advertisingexpertsagreethatpoor-qualityadsappeartobeincreasinggreatly．Theypointtoavarietyofpotentialcauses:internaltroublesattechnologycompanies,weakcontentmoderation,andhigh-leveladvertisersseekingotherchoices．”以及第四段中的“Otherfactorsarealsocontributingtoloweringadvertisingquality．”可知，本文主要講的是隨著數(shù)字廣告市場的低迷和經(jīng)濟的不確定性，用戶開始在社交媒體平臺上遇到越來越多低質(zhì)量的廣告，這些低質(zhì)量的廣告導(dǎo)致主要的社交媒體平臺逐漸變得沒有吸引力，只剩下了一些低價的廣告商。故選C。]Ⅳ．閱讀七選五Likeitorloveit,socialmediaisamajorpartoflife．Teensspendmorethanhalfoftheirwakinghoursonline．Theyusesomeofthattimetopostpicturesandcreateprofilesonsocialmediaaccounts．1

.Clickingonathumbs-uporahearticonisaneasywaytostayintouch．2Somesocialmediasitesusethoselikestodeterminehowmanypeopleeventuallyseethepost．Onewithmanylikesismorelikelytobeseenandtogetevenmorelikes．What'smore,viewingpostswithalotoflikesactivatestherewardsysteminourbrain．3Forexample,postsrelatedtoalcoholmayencourageteenstodrink．Thatmeansthatwhatyoulikeonlinehasthepowertoinfluencenotjustwhatotherslike,butevenwhattheydo．4Andnotalwaysinagoodway．Forexample,inone2011study,teensdoingadrivingtaskinalabtookmoreriskswhentheirfriendswerearound．Researchersalsolookedattheteens'brainsduringthistask．Theysawtheactivityinapartofthebrainthat'sinvolvedinrewards,whichsuggeststheteenswerechangingtheirbehaviourtotrytogetsocialapproval．Joiningsocialmediacangivepeopleasenseofbeingintheknow．Butpostsmayexaggerate(夸大)howwellourfriendsandothersarefeeling,maki