选修6it的用法(用)

Goodmorning everyone Itisnevertoooldtolearn Itiseasiertofallthantorise Itisnousecryingoverspilt 溢出的 milk Itneverrainsbutitpours 泼水 Proverbs 谚语 with It 活到老 学到老 摔倒容易爬起来难 覆水难收 不鸣则已 一鸣惊人 Itiseasytoopenashopbuthardtokeepitalwaysopen Ittakesthreegenerations 代 辈 tomakeagentleman 创业容易守业难 十年树木 百年树人 Grammar Useof It 2020 4 14 课文原句再现 1 It sabeautifuldayhereandIamsittingunderthebigtreeattheendofthegarden 2 Yourmothertellsmethatyoustartedsmokingsometimeagoandnowyouarefindingitdifficulttogiveitup 3 Believeme Iknowhoweasyitistobeginsmokingandhowtoughitistostop Theuseof it 1 用作人称代词 代表前文提到的人或事物 Who sit me Lookatthepicture isapictureofourschool It s It 2 用于代替指示代词this和that Isthisjacketyours Yes is it Readandanalyzethefollowingsentences ItisFridaytoday ItwasverycoldlastMonday Itisabout8 30now Itisabout25kmfromLongxiantoBazi ItliesinthesouthofShaoguancity Itis40 C Yougotahighfever Conclusion it可以用作非人称代词 表示 等 Date weather time distance place Temperature 日期 天气 时间 距离 地点 温度 e g a Jimisatthedoor wantstoseeyou b Someoneisatthedoor mustbeJim A That ItB It HeC He ItD Who He一般说来 在指代身份或性别明确的人时 通常要根据情况用代词he she 若是指代身份或性别不明的人 则用代词it Back C 1 Ican tfindmypen I mgoingtobuy 2 Lifetodayisbetterthan intheolddays 3 Ican tfindmypen Imusthavelost 用来代替不可数名词或单数可数名词 特指 表示 同类不同物 只在平级结构或比较级结构或表对比结构中指代前文出现的表特指的可数名词单数或不可数名词 复数名词用those指代 one that it it one that 用来指代前面提到的可数名词 所指的是事物本身 即 同类又同物 则用来替代前面出现过的可数名词 泛指 指一类事物中的一个 即 同类不同物 复数n用ones指代 TheParkersboughtanewhousebut willneedalotofworkbeforetheycanmovein A theyB itC oneD which2 We vebeenlookingathousesbuthaven tfound welikeyet A oneB onesC itD them3 I mmovingtothecountrysidebecausetheairthereismuchfresherthan inthecity A onesB oneC thatD those 易误辨析 it one that B A C thehousethattheParkersbought ahouse theair It作为形式主语当不定式 动名词 从句等用作句子主语时 为保持句子平衡 通常把真正的主语放在句末 而在句首使用形式主语it 2020 4 14 eg Itisillegal forateenager todriveacarwithoutalicense Itisnecessaryforyoutogivehimaletter Conclusion 在句1和句2中it的作用是 真正主语是 形式主语 不定式短语 1 It be adj forsb todosth 此处adj 通常为描述事件的形容词 easy difficult hard necessary impossible likely right wrong important obvious useful useless dangerous 2020 4 14 2 It be adj ofsb todosth此处adj 通常为描述人的形容词 kind unkind nice rude cruel 残忍的 considerate 体贴的 关心的 careless 粗心的 foolish stupid wise crazy 疯狂的 eg 1 It skindofyoutohelpmewiththeproblem 某人做某事某人是 2It sfoolishofyoutoquityourjobnow 2020 4 14 3 Itisnogoodcryingoverspiltmilk 4 Itisnousecastingpearlsbeforeswine 在句3与句4中 it的作用是 真正主语是 形式主语 动名词短语 构成如下结构 Itis nouse nogood notanygood notanyuse doingsth Readandanalyzethefollowingsentences Itisobviousthatthewaterwastoblame Isitpossiblethathewillbecomethechairmanofourcountry ItisamazingthatatmyageIstilllooklikeastudent Analysis it是 句子真正的主语是 形式主语 that引导的主语从句 Conclusion Itis that从句 adj 跟踪训练1 Itis adj that从句 很明显他已经知道了那个坏消息 姚明篮球比易建联打得好是肯定的 Itisobviousthathehasknownthebadnews ItiscertainthatYaomingplaysbasketballbetterthanYijianlian Itissaidthat 据说 Itisreportedthat Itissupposedthat Itishopedthat Itiswellknownthat 据报导 据推测 希望 众所周知 普遍认为 有人建议 Itissaid reported that Itissuggestedthat Itisgenerallyconsideredthat 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 1 吸烟危害健康 这是事实 2 碰巧我们在同一间大学 3 据说日本发生了地震 4 有人建议他应该立刻戒烟 Itisafactthatsmokingdoesharmtohealth Ithappensthatweareinthesamecollege thereisanearthquakeinJapan Itissaidthat heshouldquitsmokingatonce Itissuggestedthat it作形式宾语 1 IfounditveryinterestingtostudyEnglish 我发现学英语非常有趣 2 Ithinkitnousearguingwithhim 我认为和他争吵没有用 3 Hemadeitclearthathewasnotinterestedinthissubject 他非常清楚地表示他对那门学科不感兴趣 小结 it在句中充当 真正宾语可以由 以及 短语充当 还可以由 引导的宾语从句充当 不定式 动名词 that 形式宾语 总结 当复合宾语中的宾语是不定式 动名词宾语从句时 往往把真正的宾语放在它的补足语后面 而用it作形式宾语 放在宾语补足语之前 该句型中的it作形式宾语 常用的动词有think believe make find consider feel等 1 S think it necessary forsb todosth Thechairmanthought necessarytoinviteProfessorSmithtospeakatthemeeting A thatB itC thisD him Sentencepatterns B find possible feel important clause 形式宾语 2 S V it one sduty forsb todosth clause 3 S V it nogood doingsth nouse 形式宾语 Ithinkithisdutytocleantheblackboard Sentencepatterns arule anhonour findpossibleS think it necessary forsb todosth clausefeelimportant Sentencepatterns 形式宾语 arule2 S V it one sduty forsb todosth clauseanhonour 3 S V it nogood doingsth nouse Ilike intheautumnwhentheweatherisclearandbright A thisB thatC itD one 点拨 这是it作形式宾语的一种特殊用法 少数动词 如like love enjoy dislike hate appreciate等 或包含介词的动词短语 如seeto dependon等 后接宾语从句 必须先由it担任形式宾语 再接从句 Ilike enjoy hate itwhen Iwouldappreciateitif seeto dependon itthat Sentencepatterns C 形式宾语 It用于强调句型 ImetTomintheparkyesterday 1 ItwasIwhometTomintheparkyesterday 2 ItwasTomwhoImetintheparkyesterday 3 ItwasintheparkthatImetTomyesterday 4 ItwasyesterdaythatImetTominthepark Itis was 被强调部分 that who 句子的其他部分Mr Zhuteachesusmath ItisMr Zhuthat whoteachesusmath Webeginourclassat7 35inthemorning Itisat7 35thatwebeginourclass Itwasfiveo clock Igothome Itwasatfiveo clock Igothome when that Itisnotuntil 被强调部分 that 该句型也是强调句型 主要用于强凋时间状语 ItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar NotuntilshetookoffherdarkglassesdidIrealizeshewasafamousfilmstar Ididn trealizeshewasafamousfilmstaruntilshetookoffherdarkglasses 译为 直到 才 可以说是not until 的强调形式 如 在一些固定用法中考查 常见的固定用法有 makeitforgetitbelieveitornotDon tmentionitItdoesn tmatterIt That dependsGotitIt shardtosayIt suptoyoutodosth takeit thingseasy 成功 做到 赶上等别提了 忘了它吧信不信由你别提了 表示不用谢没关系视情况而定明白了 懂了很难说由你来决定做某事不要慌 别担心 沉住气 Rewritethesentencesusingan it structure 1Givingupsmokingisdifficult Itis 2Mostpeoplebelievesmokingcausescancer Itisbelievethat 3Don ttrytoquitonastressfulday It snouse 4youcouldsufferfrombadhealthifyoukeepsmoking Itislikelythat Itisdifficulttogiveupsmoking Itisbelievedthatsmokingcausescancer Itisnousetryingtoquitonsastressfulday Itislikelythatyoucouldsufferfrombadhealthifyoukeepsmoking Onemidnight wasrainingheavily Marywaslyinginbed Shecouldn tfallsleep Suddenly sheheardsomeoneknockingatthedoor Whois Sheasked Shelookedattheclockhungonthewall wasstrikingtwo isme Onemananswered wasimpossibleforhimtoappearhere shethought John Is you Yeah isme themananswered Sherushedtoopenthedoor Johnwasjuststandinginfrontofher HesaidtoMaryexcitedly Imissedtheplane wassaidthattheplaneIwouldtakecrasheddownthreehoursago ItwasinthatplaneIshouldhavegonetoNewYork Afterthis IthinkclearlythatIloveyousomuchIwanttobemarryyou it it It It It It It it that that which that that Fillintheblanks 1 Itisyouaskedmetohelpyou 2 Thereweresomechildrencryinginthehouse Itwasterrible 3 ItisquitealongwayfromheretoBeijing 4 Itwasaboutnineo clock 5 HefounditveryinterestingtoknowaboutthehistoryofChina 6 Iwastoldthatitwasdangeroustowalkaloneinthestreet 7 Wecouldn tgetoutofthebuildinguntilitstoppedraining Exercises 表示强调 人称代词 距离 时间 形式宾语 形式主语 天气 Translation 1 是到戒烟的时候了 quit Itistimetoquitsmok