公开课book6unit3 it的用法

LearningObjectives(学习目标):Bytheendofthisperiod,youwillhavebeenableto:1.learnthebasicuseofit;2.useitcorrectlyandproperly.Book6unit3GrammarTheuseof“it”Self-study请观察下列句子，看看各句中的it各指代什么，有何共同特征？it用作人称代词：指代上文提到的__________(例如句_____)或_________(例如句___)。小结1事物人1.Who’sit?Itisme.2.Lookatthepicture.Itisapictureofourschool.213.Whoseumbrellaisthat?It'sMary's.4.What'sthis?It'sarose.it用作指示代词：指代上文提到的__________(例如句_____)或_________(例如句___)。that3this4小结25.Itishalfpasteightnow.6.It’sonlyhalfanhour’swalkfromheretoourschool.7.ItisFridaytoday.8.Itwasarainingday.9.It’sspringnow.10.It’squietinthecafé.11.ItliesinthesouthofShaoguancity.12.Itis40°C!Yougotahighfever!TimeDistanceWeatherdateSeasonCircumstanceit用作非人称代词：指代上文提到的____、_____、_____、_____、_____、____________等。placetemperature小结3时间距离日期季节环境地点温度Self-test1Matchthefunctionof“it”1.—What’sthis?—Itisaboxofapples.2.Itrainedforthreedays.3.Atallmanstoodupandshookhands.ItwasMr.Li.4.Ihearyouboughtanewbike.Canyoushowittome?5.It’sthreemilesfromheretothenearestgarage.6.Itwasfiveo’clockwhenwegotbackhomeyesterday.A.指天气B.指时间C.替代前面提到的事物D.替代前面提到的人E.指距离F.指代this/that1.it指代同名同物,特指“这个”。ThestoryisinterestingandIlikeit.2.that指代同名异物，为特指,相当于the＋名词。TheumbrellayouboughtischeaperthanthatIbought.3.one指代同名异物，为泛指。相当于a／an＋名词Thisdictionaryisuseful,soIwantone.1.—Ican'tfindmywatch.—Youhaven‘tfound______?Ifyouwanttobuyanew______.2.ThepopulationofChinaislargerthan_____ofanyothercountry.3.I'mlookingforahouse.I'dreallylike____withagarden.区别it,that,oneoneitthatone13.Itishardforhimtofinishthejobtonight.14.Itiskindofyoutohelpmewiththeproblem.15.Itisnogoodcheatingintheexam.16.Itwasreportedthatacaraccidenthappened.17.Itwasobviousthathetoldalie.18.Itisapitythatheisill.it用作形式主语，替代作主语的从句(例如句_____)、动词不定式(例如句_____)、动词-ing短语(例如句_____)，而把真正的主语置于句尾。16-1813-1415小结4形式主语真正的主语1)Itbeadj.(forsb.)todosth.此处adj.通常为描述事件的形容词:easy,difficult,necessary,important,possible,dangerous,useful,useless…2)Itbeadj.ofsb.todosth.此处adj.通常为描述人的形容词:kind,nice,rude,polite,careful,careless,foolish,clever,wise,crazy…3)Itis+noun+从句Itisapity(ashame/anhonor/agoodthing/afact/asurprise/...)that...4)It’snogood/use/pleasuredoing…Itisnousecheatingintheexam.Itisclear(obvious,true,possible,certain…)that...5)Itisadj.+从句Itissaid(reported/believed.....)that...6)Itisv-edthat…it用作形式宾语，替代不定时，动词-ing短语或从句表示的真正宾语。常用的动词有think,believe,make,find,consider,feel等。sbthink/believe/make…it+adj/n+todo/doing/clause19.Ithinkitnousearguingwithhim.20.IfounditveryinterestingtostudyEnglish.21.Hemadeitclearthathewouldnotgothere.小结5Self-test2Rewritethesentencesuse“it”.用it改写下列句子1.Togiveupsmokingisdifficult.2.Learningwithoutthinkingisnouse.3.thatyoudidn’tseesuchafilmwasapity.4.Wethinkthatitisourdutytocleanclassroomeveryday.Wethink____________tocleanclassroomeveryday.5.HefeltthatlearningEnglishwellwasimportant.Hefelt____________________Englishwell.6.Theyfoundthatthattheywouldfinishtheirworkintwodayswasdifficult.Theyfound___________thattheywouldfinishtheirworkintwodays.Itisdifficulttogiveupsmoking.Itisnouselearningwithoutthinking.Itwasapitythatyoudidn’tseesuchafilm.itourdutyitimportantlearningitdifficultPractice必做：1.填空2.划出P18-19文章中含“it”的句子,并指出it的用法。选做：翻译Fillintheblankswithproperwords.(必做)1.Theyhavemade_____arule___________(notsmoke)intheroom.2.________worriedher_______herhairwasturninggrey.3.It____________(know)toallthattheUKconsistsoffourcountries.4.Todayisabeautifulday.____________________today.5.Ihopetohaveacomputer,butIcan'taffordtobuy____.6.Itisnouse___________(try)topersuadehimbecausehewon’ttakeyouradvice.Itisuseless___________(try)topersuadehimbecausehewon’ttakeyouradvice.tryingitnottosmokeItthatknownItisabeautifuldayonetotry1)ItisabeautifuldayhereandIamsittingunderthebigtreeattheendofthegarden.(Line1)2)ItseemsamazingthatatmyageIamfitenoughtocycle20kilometersinanafternoon.(Line2)3)It'smybirthdayintwoweeks'time...(Line3)4)Yourmothertellsmethatyoustartedsmokingsometimeagoandnowyouarefindingitdifficulttogiveitup.(Line7)形式主语非人称代词(time)人称代词(代替前面提到的smoking)非人称代词(weather)形式宾语划出P18-19文章中含“it”的句子,并指出it的用法(必做)5)Believeme,Iknowhoweasyitistobeginsmokingandhowtoughitistostop.(Line8)6)Itwastimetoquitsmoking.(Line27)7)Itmighthelpyoutostopandstrengthenyourresolve.(Line29)8)Itisnoteasytostopsmoking.(Line1,Page19)非人称代词(time)形式主语人称代词(指代前面提到的advice)形式主语Translatethesentenceswithit.（选做）1.我的书不见了，到处都找不到。2.哭是没有用的。3.据报道，这次事故有3人死亡。4.我发现学数学很难。Itisreportedthat3peoplediedintheaccident.Mybookismissing.Ican’tfinditanywhere.Itisnousecrying.Ifinditdifficulttolearnmath.HomeworkRewritethesentencesofEx.2intextbook(p21).