it的用法

IT用法（theusageof“it”）1.it作人称代词1.1Ningboisabeautifulcity,isn’tit?1.2Isthisyourdog？No,itisn’t.1.3Itwasagreatsurprisetomewhenhedidathinglikethat．2.非人称代词it2.1Itisalovelyday,isn’tit?2.2Itwasnearlymidnightwhenshecameback.2.3Itwasveryquietinthecafé.2.4Itishalfanhour’swalktothecitycentre.3.it的其他用法3.1Whoisit?---It’sme.3.2Itdoesn’tmatter.找出课文中含有it的句子1.ItseemsamazingthatatmyageIamstillenoughtocycle20kilometers.2.Youarefindingitdifficulttogiveitup.3.Howeasyitistobeginsmokingandhowtoughitistostop.4.Itwasverydifficulttoquit.5.Itwasmoredifficultforsmokingcouplestobecomepregnant.1.Itisclear(obvious，true，possible，certain....)that.....该句型中it是形式主语，真正的主语是that引导的主语从句，常译为“清楚（显然，真的，肯定．．．）”　是主语从句最常见的一种结构。Itisveryclearthathe’stalllikeatree.　　2.Itisimportant(necessary，right，strange，natural...)that...该句型和上一个同属一个句型；由于主句中的形容词不同，that后的从句中要用虚拟语气（should+动词原形），should可以省去，建议记住该句型中的形容词。Itisimportantthatwe(should)learnEnglishwell.3.Itissaid(reported，learned....)that...该句型中的it仍是形式主语，真正主语是that引导的主语从句；该结构常译为“据说（据报道，据悉．．．）”。ItissaidthathehascometoBeijing.4.Itissuggested(ordered/demanded/insisted/commanded...)that...该句型和上一个同属一个句型，主句中的过去分词是示请求，建议，命令等词时，that　后的从句要用虚拟语气（should+动词原形），should可以省；常译为“据建议；有命令．．．）　Itissuggestedthatthemeeting(should)beputoff.5.Itisnogood(use)doingsth.该句型中的真正主语是动名词短语，主句中的表语可以是nogood，(notanygood)，nouse，(notanyuse)。　　ItisnogoodlearningEnglishwithoutspeakingEnglish.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it2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that引导的宾语从句。Wethinkitourdutytocleanourclassroomeveryday.I选词填空1.It’snogood____(eat,eating)somuchchocolates.2.It’snotdangerous____(tohelp,helping)AIDSpatientsinaproperway.3.It’sunbelievable___(that,since)hespendsallhismoneyonalcohol.4.It’sbelieved___(because,that)somkingdoesterribledamagetotheheartandlungs.5.It’llgivemegreatstress___(tofinish,finishing)thisexperimentintwodays.历年高考1.–Thephoneisringing.--Whocould_____be?Itisalreadymidnight.(2002年)A.heB.itC.thisD.that2.Foralongtimeaftertheoperation,Lindafound_____difficulttofallasleep.(2004年)A.thisB.oneC.thatD.it3.Afterworkingfortwohours,Ifound_____impossibletocompletethepaperintime.(2009年)A.meB.thisC.thatD.it4.–Haveyougotacamera?--No,Ishouldbuy______.(2010年)A.itB.oneC.thatD.this5.ItwasonAugust15,1945________theChinesepeoplewonthefinalvictoryintheAnti-JapaneseWar.(2004年)6.____makesmesicktothinkaboutthematter.(2005年)A.thatB.whichC.untilD.whileA.thisB.itC.thatD.whichHomework:Rewritethesesentencesusingitstructure.1.Givingupsmokingisdifficult.(Itis…)2.Don’ttrytoquitonastressfulday.(Itisnouse…)3.Torememberthisruleisimportant.4.lyinginthesuninwinterispleasant.Thankyou