Unit5AdelicateworldUsinglanguage課件-高中英語選擇性

P3UsinglanguageAdelicateworldUnit5

含義

類型it作為形式主語，代替句子的邏輯主語，并無實(shí)際詞義。這可以保持句子的結(jié)構(gòu)平衡，避免主語太長，顯得頭重腳輕。it作形式主語

It指代不定式

It指代動(dòng)名詞

It指代從句

常見句型(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用法及常見情況②特殊情況當(dāng)不定式、動(dòng)名詞或從句在某個(gè)句子中作賓語時(shí)，為了保持句子的結(jié)構(gòu)平衡，常用it作為形式賓語，而將真正的賓語放到句子后部去。此用法中常見的及物動(dòng)詞有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代表動(dòng)名詞

it代表連接代詞或副詞引導(dǎo)的從句

it作形式賓語用法及常見情況歸納1.動(dòng)詞+it+that從句，常見于take,have,put等動(dòng)詞

之后。Itakeit

thathewillfinishthetaskbyhimself.

Wereallyappreciateit

ifyoucoulddousafavour.2.動(dòng)詞+it+when/if從句，常見于appreciate,enjoy,

like,prefer,hate,dislike,love等動(dòng)詞之后。it作形式賓語的幾種特殊情況it作形式賓語的幾種特殊情況3.動(dòng)詞+it+介詞短語+that從句，常見于oweittosb,

takeitforgranted等結(jié)構(gòu)中。Weoweit

toyouthatwearestillalive.4.動(dòng)詞+介詞+it+that從句，常見于lookto,

dependon,

insiston,stickto,answerfor,seeto等結(jié)構(gòu)中。Sheinsistedon

itthatshewasinnocent.5.動(dòng)詞+it+過去分詞+從句Hemadeit

knowntoeveryonethathewasright.

Checkyouranswers.P702Rewritetheunderlinedpartsusingitasanemptyobject.manypeoplethinkitagoodideatokeepthisturtleasapet

believeitnobigissuetoreleasethemintothewildpeoplehavefounditathreattootherspeciestoreleasetheseturtlesintothewildExpertsconsideritimportantforownerstokeeptheirpetsinanenclosedareaLookatthepicturesoftheSaihanbaNationalForestParkanddescribeitschangesusingitasanemptyobjectwhereappropriate.P713Possibleanswer:Ithinkitabreakthroughtotransformadesert

intoaforest.Inthe1960s,Saihanbawasadesert,whichmadeitimpossible

togrowplants.Besides,Ifeelitunrealisticto

planttreeswithoutwater.Butinfact,someworkersinvestigateditandfounditlikelytogrowcropsandplanttrees.Then,theyfeltittheirdutytorecreatetheforestofSaihanba.Asaresult,Saihanbahasbecomeabeautifulforestpark.it作形式賓語用法及常見情況當(dāng)不定式、動(dòng)名詞或從句在某個(gè)句子中作賓語時(shí)，為了保持句子的結(jié)構(gòu)平衡，常用it作為形式賓語，而將真正的賓語放到句子后部去。特殊情況動(dòng)詞+it+that從句，常見于take,have,put等動(dòng)詞之后。動(dòng)詞+it+when/if從句，常見于appreciate,enjoy,like,prefer等動(dòng)詞之后。動(dòng)詞+it+介詞短語+that從句，常見于oweittosb,takeitforgranted等結(jié)構(gòu)中。動(dòng)詞+it+V-ed+從句動(dòng)詞+介詞+it+that從句,lookto,dependon,insiston,stickto,answerfor等結(jié)構(gòu)中。Ⅰ.用適當(dāng)?shù)膬?nèi)容或括號(hào)中所給單詞的適當(dāng)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.根據(jù)漢語提示，完成句子。1.Somepeoplefeeltheneedtofullyexploretheoceans,thatisbecauseit________________________________________(將使人類發(fā)現(xiàn)……成為可能)newsources