Unit5AdelicateworldUsinglanguage课件-高中英语选择性

P3UsinglanguageAdelicateworldUnit5

含义

类型it作为形式主语，代替句子的逻辑主语，并无实际词义。这可以保持句子的结构平衡，避免主语太长，显得头重脚轻。it作形式主语

It指代不定式

It指代动名词

It指代从句

常见句型(1)Itisclear/obvious/true/possible/certain/…that…(2)Itisimportant/necessary/right/strange/natural/…that… (should)do…(3)Itissaid/reported/learnt/…that…(4)Itissuggested/ordered/required/…that...(should)do...(5)Itisapity

/shame/…that…(6)Ithappens/seems/looks/appears/…that…(7)Itdoesn’tmatterwhether/if…(8)Itlooks/seemsasif…(9)Itis+adj.

+ofsb

+todo…/It+be+adj.+forsb+todo(10)Ittakes…(sometime)todo(11)Itis/wasawasteoftimedoing…(12)Itis/wasnogood/usedoing…(13)Itis/wasworth/worthwhiledoing…Lookatthesentencesandanswerthequestions.Group2Group10,000peoplereadingmyblog!bIlovetophotographtherisingsun,…a.NovisitorwouldthinkitsurprisingthattheislandisaUNESCOWorldHeritageSite.b.NovisitorwouldthinkthattheislandbeingaUNESCOWorldHeritageSiteissurprising.0,000peoplereadingmyblog!bIlovetophotographtherisingsun,…c.Expertsfeltitnecessarytocomeupwithaplantoremovealltherabbitsfromtheisland.d.Expertsfelttocomeupwithaplantoremovealltherabbitsfromtheislandwasnecessary.Whatdoes“it”refertoinsentences(a)and(c)?2.Whatisthedifferencebetweenthesentencesineachgroup?Whentheobjectofasentenceisathat-clause(b)oraninfinitive(d),wesometimesuse“it”asanemptyobjectandputtherealobjectlatertokeepbalance.1.Thisincidentmadeitclearthattherat,mouseandrabbitproblemneededsolvingonceandforall.(U5P68)2.Thisinterventionisalong,much-delayedendingtoasadstory,butwehumansoweittotheislandtogiveitahappyending.(U5P68)3.Channelsofcommunication,suchasthemobilephoneandtheInternet,havemadeitpossibletospeakinstantlywithsomeoneontheothersideoftheplanet,enablingustoformcloseconnectionswithpeopleofcompletelydifferentcultures.(U4P55)Focuson基本用法itasanemptyobject①用法及常见情况②特殊情况当不定式、动名词或从句在某个句子中作宾语时，为了保持句子的结构平衡，常用it作为形式宾语，而将真正的宾语放到句子后部去。此用法中常见的及物动词有believe/feel/find/make/regard/consider/think/suppose/

等。6+1+2+3＊Iconsideritaprioritytomaintainahealthywork-lifebalance.＊Hefounditnousearguingwithhisfather.＊We

regardit

apleasure

thatweworkwithateamoftalentedandmotivatedindividuals.it代表不定式

it代表动名词

it代表连接代词或副词引导的从句

it作形式宾语用法及常见情况归纳1.动词+it+that从句，常见于take,have,put等动词

之后。Itakeit

thathewillfinishthetaskbyhimself.

Wereallyappreciateit

ifyoucoulddousafavour.2.动词+it+when/if从句，常见于appreciate,enjoy,

like,prefer,hate,dislike,love等动词之后。it作形式宾语的几种特殊情况it作形式宾语的几种特殊情况3.动词+it+介词短语+that从句，常见于oweittosb,

takeitforgranted等结构中。Weoweit

toyouthatwearestillalive.4.动词+介词+it+that从句，常见于lookto,

dependon,

insiston,stickto,answerfor,seeto等结构中。Sheinsistedon

itthatshewasinnocent.5.动词+it+过去分词+从句Hemadeit

knowntoeveryonethathewasright.

Checkyouranswers.P702Rewritetheunderlinedpartsusingitasanemptyobject.manypeoplethinkitagoodideatokeepthisturtleasapet

believeitnobigissuetoreleasethemintothewildpeoplehavefounditathreattootherspeciestoreleasetheseturtlesintothewildExpertsconsideritimportantforownerstokeeptheirpetsinanenclosedareaLookatthepicturesoftheSaihanbaNationalForestParkanddescribeitschangesusingitasanemptyobjectwhereappropriate.P713Possibleanswer:Ithinkitabreakthroughtotransformadesert

intoaforest.Inthe1960s,Saihanbawasadesert,whichmadeitimpossible

togrowplants.Besides,Ifeelitunrealisticto

planttreeswithoutwater.Butinfact,someworkersinvestigateditandfounditlikelytogrowcropsandplanttrees.Then,theyfeltittheirdutytorecreatetheforestofSaihanba.Asaresult,Saihanbahasbecomeabeautifulforestpark.it作形式宾语用法及常见情况当不定式、动名词或从句在某个句子中作宾语时，为了保持句子的结构平衡，常用it作为形式宾语，而将真正的宾语放到句子后部去。特殊情况动词+it+that从句，常见于take,have,put等动词之后。动词+it+when/if从句，常见于appreciate,enjoy,like,prefer等动词之后。动词+it+介词短语+that从句，常见于oweittosb,takeitforgranted等结构中。动词+it+V-ed+从句动词+介词+it+that从句,lookto,dependon,insiston,stickto,answerfor等结构中。Ⅰ.用适当的内容或括号中所给单词的适当形式填空。1.

Ifind_____verynecessarytohavethesecourses,fortheycanenrichtheschoollifeofeachstudent.2.Alicewasproudofherroleasanurseandthought____

awisedecisiontogobacktonursing.3.Youmayfeelitsurprising______the7-year-oldRussiangirlcanspeakthreelanguagesfluently.4.Nomatterwheresheis,shemakesitarule

________(go)forawalkaftersupper.5.Tonythinksitawasteoftime_________(play)videogames,soheisalwaysworkinghard.ititthattogoplayingⅡ.根据汉语提示，完成句子。1.Somepeoplefeeltheneedtofullyexploretheoceans,thatisbecauseit________________________________________(将使人类发现……成为可能)newsources