it做形式宾语的用法PPT课件

.,1,Theuseof“it”asaformofanobject,.,2,Hefounditdifficulttostopsmoking.Ithinkitbestthatyoushoulddomoreexercise.Shethoughtitnogoodworryingabouthim.,It作形式宾语代替不定式短语,从句或动词-ing。,.,1.It用作形式宾语,当不定式（短语）、动名词（短语）或从句在句子中作宾语时，为保持平衡，避免句式结构的混乱，常用it作形式宾语，而将真正的宾语放在句尾。此时it只起引导作用，无意义。,S+v+it+,adj.n,(forsb)todosth.从句doingsth,+,findpossibleS+think+it+necessary+(forsb.)todosth./that-clausefeelimportant,Sentencepatterns:,形式宾语,arule2.S+V+it+onesduty+(forsb.)todosth./that-clauseanhonour,3.S+V+it+nogood+doingsth.nouse,.,5,完成句子,（1）They_（发觉难）tofinishtheirworkintwodays.（2）We_（认为是我们的职责）tocleanourclassroomeveryday.（3）Itisimportant_（对她来说）tocometotheparty.,founditdifficult,thinkitourduty,forher,.,6,作形式宾语(PreparatorySubject),为了记忆方便我们把该句型总结为6123结构。,6指主句中常用的动词：think,believe,make,find,consider,feel；1指的是形式宾语it；2指的是宾补的两种形式：形容词或名词；3指的是真正宾语的三种形式：不定式短语，动名词短语或从句。,Wethinkitourdutytocleanourclassroomeveryday.HefeltitimportantlearningEnglishwell.Theyfounditdifficultthattheywouldfinishtheirworkintwodays.,.,7,1.Thefactthatshewasforeignmade_difficultforhertogetajobinthatcountry.A.SoB.muchC.thatD.it2.Thedoctorthought_wouldbegoodformetohaveaholiday.A.thisB.thatC.oneD.It3.Idontthink_possibletomasteraforeignlanguagewithoutmuchmemorywork.A.thisB.thatC.itsD.it,.,8,4.It作形式宾语的特殊用法,1.某些表示“喜、怒、哀、乐”的动词，如like,enjoy,love,hate,dislike,appreciate等后往往不能直接接宾语从句；必须先由it担任形式宾语,再接从句.,Wewouldmuchappreciateitifyoucoulddousthatfavour.要是你们能帮我们这个忙，我们将非常感激。IdpreferitifIdidnthavetofinishthework.要是我不必完成那项工作，那就太好了。,.,9,2.某些含有介词的动词短语如seeto,dependon,answerfor,relyon,insiston,lookto,stickto等结构中往往不能直接接宾语从句；必须先由it担任形式宾语,再接从句.,Illseetoitthateverythingisreadyintime.我将负责按时做好一切准备。YoumaydependonitthatTomwillhelpyouwithyourEnglish.你放心，汤姆会帮助你学英语的。Imcountingonitthatyouwillcome.我指望着你会来。,.,10,Ilike_intheautumnwhentheweatherisclearandbr