it用法总结-PPT.ppt
The use of itThe use of ititit的的的的 用用用用 法法法法28.05.2023Discovering“It”It rains heavily.2.It is 20 kilometers from Granddads house to James.3.It is November 11,2005.4.It is 9 oclock at night.5.Itll be lovely in the garden tonight6.It is bad to smoke.7.It is likely that he will succeed.天气天气距离距离日期日期时间时间形式主语形式主语环境环境形式主语形式主语内容提要内容提要it作人称代词作人称代词,代替前面提到的事物代替前面提到的事物.it作指示代词作指示代词,指代指代this/that3.it作非人称代作非人称代词,词,指代时间指代时间,日期,温度,季节日期,温度,季节,距离,金钱,天气,环境等距离,金钱,天气,环境等4.it作形式主语作形式主语.当动名词当动名词,不定式不定式,从句作主语时从句作主语时,常用常用it作形式主语作形式主语.5.it作形式宾语作形式宾语,常用在常用在6123结构中结构中.(think,find,make,believe,)6.Itisthat/who.的强调句型的强调句型.1.用作人称代词用作人称代词代替前文提到的事物,或代替前文提到的事物,或指代性别不详的人指代性别不详的人My pen is missing.I cannot find it anywhere.Her new baby is tiny.It only weighs 2 kg.一一.代词代词it2.作为指示代词作为指示代词相当于相当于this或或that,it有时不特指某件东有时不特指某件东西,而代表前面已提到的或将会发生的某西,而代表前面已提到的或将会发生的某件事情。件事情。I had a talk with the students.It was very helpful to her3.作为非人称主语作为非人称主语 可用来指代时间、距离、自然现象(天气、气候、气温)、环境等,通常不翻译出来。It is two oclock now.It is Sunday today.It is summer.It is not far to the post office.It is getting hot.It will be a fine day tomorrow.It is quiet in the classroom.6Eg:IboughtadictionarythreeyearsagoandIamstillusing_now.I bought a dictionary three years ago but I amgoingtobuyanew_soon.It用用以以指指特特定定的的前前面面提提到到过过的的事事物物,即即:it和和它它替替换换的的是是同同一一个个事事物物,it前前无无修修饰饰语语;而而one用用于于替替换换与与前前提提事事物物有有共共同同之之处处但但并并不不完完全全一一样样的的事事物物,因此,因此,one之前或之后一定有修饰语来加以区别。之前或之后一定有修饰语来加以区别。It和和oneitone71.Tomsmotherkepttellinghimthatheshouldworkharder,but_didnthelp.A.heB.whichC.sheD.it2.Europeanfootballisplayedin80countries,making_themostpopularsportintheworld.whichB.thisC.thatD.it3.-Thereisacopyofthebookinthelibrary.Willyougoandbuy_?-No,Idratherbuy_inthebookstore.A.it;oneB.one;oneC.one;itD.it;itDDA大家有疑问的,可以询问和交流大家有疑问的,可以询问和交流可以互相讨论下,但要小声点可以互相讨论下,但要小声点可以互相讨论下,但要小声点可以互相讨论下,但要小声点大家有疑问的,可以询问和交流大家有疑问的,可以询问和交流可以互相讨论下,但要小声点可以互相讨论下,但要小声点可以互相讨论下,但要小声点可以互相讨论下,但要小声点二二.引导词引导词 it1.it作形式主语作形式主语当主语由动词不定式短语,动名词短语和当主语由动词不定式短语,动名词短语和主语从句充当时,为了避免头重脚轻,使整主语从句充当时,为了避免头重脚轻,使整个句子平衡,常把个句子平衡,常把这些主语放在句末,而把这些主语放在句末,而把it放在句首充当形式主语。如:放在句首充当形式主语。如:It is necessary for you to get up early.It is no use arguing with him.It is a fact that English is being accepted as an international language.作形式主语作形式主语,代替不定式代替不定式,动名词或从句表示的动名词或从句表示的真正主语真正主语代替不定式代替不定式1)Itbe+adj.+ofsb.todoItbe+adj./n.+forsb.todo.当形容词表示的是不定式逻辑主语当形容词表示的是不定式逻辑主语sb.的性质的性质的时候,用的时候,用of,可以改写为:可以改写为:sb.iskindtodosth.其他的形容词用其他的形容词用for。ItisimportantforustolearnEnglish.Itisapityforyoutomisstheconcert.ItiskindofyoutohelpmeYouarekindtohelpme.122.代替动名词代替动名词Itbe+adj./n.+doing.当形容词或名词为当形容词或名词为useless,nouse,nogood时时,后面必须跟动名词后面必须跟动名词.Itisnousearguingwithhim.3.代替从句代替从句主语从句通常不放在句首,一般把它移到主语从句通常不放在句首,一般把它移到句子后面,前面用句子后面,前面用“it”作作形式主语形式主语。It is strange that he didnt come yesterday.It is not known yet whether they will return today.131._worriesmethewayhekeepschanginghismind.(2007.山东山东)A.ThisB.ThatC.WhatD.It2._excitedusChinesegreatlythatLiuXiangbroketheworldrecordofthe110-meterhurdlerace.A.WhatB.ThatC.ItD.AsDC14当复合宾语中的宾语是不定式、动当复合宾语中的宾语是不定式、动名词、宾语从句时名词、宾语从句时,往往把宾语放往往把宾语放在它的补足语后面在它的补足语后面,而用而用it作形式宾作形式宾语语,放在宾语补足语之前。放在宾语补足语之前。e.g.Ithinkitnousearguingwithhim.我认为和他争吵没有用。我认为和他争吵没有用。2.作形式宾语作形式宾语该句型中的该句型中的it作形式宾语。为了记忆方便我们可称该句型作形式宾语。为了记忆方便我们可称该句型为:为:6123结构结构 66指主句中常用的动词:指主句中常用的动词:指主句中常用的动词:指主句中常用的动词:think,believe,make,find,think,believe,make,find,consider,feelconsider,feel;11指的是形式宾语指的是形式宾语指的是形式宾语指的是形式宾语itit;22指的是宾补的两种形式:形容词或名词指的是宾补的两种形式:形容词或名词指的是宾补的两种形式:形容词或名词指的是宾补的两种形式:形容词或名词;33指的是真正宾语的三种形式:不定式短语,动名词短语指的是真正宾语的三种形式:不定式短语,动名词短语指的是真正宾语的三种形式:不定式短语,动名词短语指的是真正宾语的三种形式:不定式短语,动名词短语或或或或thatthat引导的宾语从句。引导的宾语从句。引导的宾语从句。引导的宾语从句。Wethinkitourdutytocleanourclassroom.HefeltitimportantlearningEnglishwell.Theyfounditdifficultthattheywouldfinishtheirworkintwodays.1.Hedidntmake_clearwhenandwherethemeetingwouldbeheld.(2007.天津天津)A.thisB.thatC.itD.there2.Idontthink_possibletomasteraforeignlanguagewithoutmuchmemorywork.A.thisB.oneC.itsD.itCD3.用于强调句中用于强调句中1.Itis+被强调部分被强调部分+that/who+句子剩余部分句子剩余部分该句型是强调句型。将被强调的部分该句型是强调句型。将被强调的部分放在前面,其它部分置于放在前面,其它部分置于that之后。被强调之后。被强调部分可以是主语,宾语,表语或状语。强调的部分可以是主语,宾语,表语或状语。强调的主语如果是人,主语如果是人,that可以由可以由who换用。如果把换用。如果把这种句型结构划掉后,应该是一个完整无缺这种句型结构划掉后,应该是一个完整无缺的句子。这也是判断强调句型与其它从句的方法。的句子。这也是判断强调句型与其它从句的方法。Iplantedtreesatthegatethismorning.ItwasIthat/whoplantedtreesatthegatethismorning.ItwastreesthatIplantedatthegatethismorning.ItwasatthegatethatIplantedtreesthismorning.ItwasthismorningthatIplantedtreesatthegate.2.2.It is not until+It is not until+被强调部分被强调部分+that.that.该句型也是强调句型。主要用于强凋时间状语,该句型也是强调句型。主要用于强凋时间状语,译成汉语译成汉语“直到直到才才”,可以说是,可以说是 not.not.until.until.的强调形式。的强调形式。Ididnotrealizeshewasafamousfilmstaruntilshetookoffherglasses.=ItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar.Itwasabout600yearsago_thefirstclockwasmadeAthatBuntilCbeforeDwhen2.Was_thatIsawlastnightattheconcert?A.ityou B.notyouC.youD.thatyourselfAA3.ItwasonlywhenIreadhispoemsagain_IbegantoappreciatetheirbeautyAuntilBthatCthenDso4.Itwasnotuntil1920_regularbroadcastsbegan.A.whileB.whichC.thatD.sinceBc2023/5/28六、It常用的固定搭配 makeit(1)在口语当中相当于succeed,表示:成功、做到、说定、赶上、及时到达例Itshardtomakeittothetopinshowbusiness.(2)在口语中相当于fixthedatefor,表示“约定好时间”例Shallwemeetnextweek?OK.WejustmakeitnextSaturday.2023/5/282.takeit/thingseasy相当于Dontworryordonthurry.用来劝告别人,表示“不要慌,别担心,沉住气”Takeiteasy!Hewilldoitwell.3.Italldepends/thatalldepends在口语中,相当于ithasntbeendecidedyet,表示“那得看情况,还没有定下来”Areyougoingtothecountrysideforholiday?It/Thatalldepends.4.Itsuptosb.在口语中,相当于itsdecidedbysb.表示“由决定,由负责,取决于”Shallwegooutfordinner?Itsuptoyou.Tomsmotherkepttellinghimthatheshouldworkharder,but_didnthelp.A.heB.whichC.sheD.itAs_happens,Ihavebroughtmyumbrellawithme.A.itB.thisC.thatD.such3._hasalreadybeenpointedout,grammarisnotasetofdeadrules.A.AsB.ItC.ThatD.This4.Itwassevenforty-five_hefinishedthework.A.whenB.thatC.whenD.beforeDAAA5.Wasitbecauseitsnowedlastnight_hedidntcome?A.whyB.thatC.whenD.which6.Does_matterifhecantfinishthejobontime?A.thisB.thatC.heD.it7.Europeanfootballisplayedin80countries,making_themostpopularsportintheworld.whichB.thisC.thatD.it8._isnodoubtthathewillsucceedinhisexperiment.A.ItB.ThisC.ThatD.ThereBDDD