Unit+4+Breaking+boundaries+Using+language+課件-【知識精講精研】高中英語外研版（2019）選擇性必修第二冊

Breakingboundaries4UNITItasanemptysubjectTolearntheusageofit

asanemptysubject.Tolearntodescribeacitybyusingitasanemptysubject.Idroppedmywatchanditbroke.2.Thereisaknockonthedoor.Itmustbethepostman.3.What’sthis?It’sanewmachine.somethingsomebodypronounWhathavewelearntaboutit?4.It

isFridaytoday.5.ItwasverycoldlastMonday.6.ItliesinthesouthofAnhui.7.Itisabout8:30now.8.It

isabout25kmfrommycitytothecapital.9.Itis39degree!Yougotahighfever!dateweatherplacetimedistancetemperatureaButitisvitalnottotakeanychances.bButnottotakeanychancesisvital.____________________________________________________cItisimportanttorememberthatEboladoesn’trespectnationalboundaries.dTorememberthatEboladoesn’trespectnationalboundariesisimportant.Lookatthesentencesandanswerthequestions.Sentences(a)and(c)arefromthereadingpassage.1aButitisvitalnottotakeanychances.cItisimportanttorememberthatEboladoesn’trespectnationalboundaries.1.Whatdoes“it”refertoinsentences(a)and(c)?“It”refersto“nottotakeanychances”insentences(a)and“torememberthatEboladoesn’trespectnationalboundaries”insentence(c).2.Whatisthedifferencebetweenthesentencesineachgroup?Whydoestheauthorchoosetousesentences(a)and(c)insteadof(b)and(d)?Thefirstsentencesineachgroupuse“it”asanemptysubjectatthebeginningofthesentences.Thereasonwhysentences(a)and(c)arechosenisthatthesentencesarekeptbalancedandthekeyinformationofthesentencesisemphasised.Ifeltitwasmydutyasadoctortogothereandoffermyhelp.

It

issoinspiringtohavecolleagueslikeWilton,MaisyandAlfonso.…itisabsolutelyessentialforusalltocollaboratetocreateaglobalcommunitywithasharedfutureofpeaceandprosperity.Nowlookformoresentenceswiththisstructureinthereadingpassage,andsummariseitsuseinyourownwords.it作形式主語it常代替由不定式短語、動名詞短語或從句表示的真正主語，作形式主語，而將真正的主語后置。it作形式主語，所代替的是句子的邏輯主語，并無實際詞義。還可以保持句子的結(jié)構(gòu)平衡，避免主語過長，顯得頭重腳輕。it作為形式主語主要分為三種情況。1.be+形容詞+不定式(Itis+adj.+todosth.)egItisdifficulttotranslatethebook.2.be+名詞+不定式(Itis+n.+todosth.)

egItwasherdutytocleantheroom.3.be+介詞短語+不定式

egIt

wasagainstmyprincipletodothat.4.及物動詞+賓語+不定式

It

cost150yuantobuythedress.一是代表不定式，根據(jù)句子的謂語又可分為四種類型：It’snouse/good/fun/awasteoftimedoingsth.做某事沒有用/沒有好處/沒有意思/是浪費時間egItisnousedoingthat.It’spleasantsittinghere.二是代表動名詞，一般以“be+名詞”作謂語。也可以以“be+形容詞”作謂語。1.It+be+形容詞+從句(Itis+adj.+從句)egItisnaturalthatsheknowseverythingaboutit.2.It+be+名詞+從句(Itis+n.+從句)egItisaquestionhowhedidit.3.It+動詞的被動語態(tài)+從句egItisnotdecidedwhowilltakeoverthecompany.4.It+be

/其他系動詞+that從句

egItmaybe/seemsthatheviewstheissuefromadifferentperspective.三是代表從句，具體可分為四種類型：1.Itisclear/obvious/true/possible/certain/…that…egItisobviousthathe’slate.2.Itisimportant/necessary/right/strange/natural/…that…(should)do…egItisanecessarythatyoudoenoughexercisesbeforetherace.3.Itissaid/reported/learnt/…thategItisreportedthataseven-year-oldgirlwonthegame.it作形式主語的常見句型：4.Itissuggested/ordered/required/…that…(should)do…egItissuggestedthatthemeeting(should)beputoff.5.Itisapity/shamethat…

egItisapitythatyoudidn’tseesuchagoodfilm.6.Ithappens/seems/looks/appears/…that…

egIthappensthatIknowhim.7.Itdoesn’tmatterwhether/if…egItdoesn’tmatterifyoumissthebus,becausethere’sanotherone15minuteslater.8.Itlooks/seemsasif

egItlooksasifheiswrong.9.Ittakes…(sometime)todo…egIttookusthreehourstogetthere.10.Itis+形容詞+(ofsb)+todo…

egItiskindofyoutothinksomuchofus.Rewritetheunderlinedpartsusingitasanemptysubject.Accordingtothe“2017HollywoodDiversityReport”,togetrolesinAmericanfilmandtelevisionisnolongerquitesodifficultforwomenandminorities.Thisisanothersmallbutimportantadvanceaginstgenderandracialdiscrimination.it

isnolongerquitesodifficultforwomenandminoritiestogetrolesinAmericanfilmandtelevisionn.少數(shù)派;少數(shù)2Thereportanalysed200filmsreleasedin2015and1,206TVshowsfrom2014to2015,anddiscoveredthattobecomealeadingactorinHollywoodisnowamorerealistichopeforminorityactors.Inmoregoodnews,towriteanddirectHollywoodfilmsismorecommonthanbeforeforwomen.adj.能實現(xiàn)的it

isnowamorerealistichopeforminorityactorstobecomealeadingactorinHollywoodit

ismorecommonthanbeforeforwomentowriteanddirectHollywoodfilmsThebadnewsisthatthereisstillalongwaytogo.Leadingrolesaremorelikelytobegiventowhiteactors.AsianAmericanactors,inparticular,stillfaceproblems.Evennow,tocastwhiteactorsasAsiancharactersisseenasacceptablebyfilmstudios.Butatleastthereportshowsthatthingsaremovingslowlyintherightdirection.it

isseenasacceptablebyfilmstudiostocastwhiteactorsasAsiancharactersv.選派(角色)Completethesentences.1.對我來說，找到一個可以向他學習的當?shù)厝苏媸翘昧?。_____________________anativespeakertolearnfrom.2.的確，智能手機在我們?nèi)粘Ｉ钪邪缪葜匾慕巧?/p>

______________asmartphoneplaysanimportantroleinourdailylife.ItisgreatformetofindItistruethat3.試圖用武力解決問題是沒用的，和談才是唯一的辦法。________________tosolvetheproblembyforce.Peacetalksaretheonlysolution.4.據(jù)說臺風已造成了很多的破壞。________________thetyphoonhadcausedalotofdamage.5.遵守規(guī)則讓社會保持秩序、人民生活安定是每個人的責任。

__________________________therulestokeepthesocietyinorderandpeople’slivessafe.ItisnousetryingItwassaidthatItiseveryone’sdutytoobey根據(jù)括號內(nèi)的漢語提示用it作形式主語補全下面句子。1._______________________(爭辯是沒用的)aboutthematterwithhim.

2.Johnsaid___________________________________________(繼續(xù)這個實驗是重要的).3.Theyaregoodfriends._____________________________

_________________(難怪他們彼此如此熟悉).4.___________________

(

尚待分曉)whetherthenewlyformedcommittee’spolicycanbeputintopractice.5._________________________(

不難理解)whyhedidsoatthattime.ItisnousearguingitwasimportanttocontinuewiththeexperimentItisnowonderthattheyknowItremainstobeseen

ItisnothardtounderstandeachothersowellDescribethecityusingtheinformationprovidedanditasanemptysubject.notasurprisingthing/studentsseedifferentskincoloursinthesameclassItisnotasurprisingthingforstudentstoseedifferentskincolorsinthesameclass.Beijing3possible/peoplehearmanydifferentlanguagesanddialectsItispossibleforpeopletohearmanydifferentlanguagesanddialects.easy/peoplefindproductsfromallovertheworldItiseasyforpeopletofindproductsfromallovertheworld.notdifficult/foreignerssett