M6 U3-4it的用法

Grammar Theuseof it 1 it的最基本用法是作代词 主要指刚提到的事物 以避免重复 Xi anisabeautifulcity isn tit 2 也可以指动物或婴儿 未知性别 or确认某人的身份 Isthisyourdog No itisn t Whoissingingoverthere It sMary 一 it作人称代词 Theuseof it 一 用作人称代词 代表前面提到的人或事物 Who sit me Lookatthepicture isapictureofourschool It s It 二 用于代替指示代词this和that Isthisjacketyours Yes is it it有时并不指具体的东西 而泛指天气 时间 日期 距离 价值 度量 温度 环境等 称为非人称的it 1 指天气 Itisalovelyday isn tit Itisabitwindy 2 指时间 Itwasnearlymidnightwhenshecameback 3 指环境 Itwasveryquietinthecaf 4 指距离 Itishalfanhour swalktothecitycentrefrommyhome 二 it作非人称代词 5 指日期 What sthedatetoday It sMay1 2007 6 指季节 Itissummernow 7 指度量 Itisabout5kilograms 8 指价值 What sthecostoftheT shirt Itis150yuan 替代作主语的从句 动词不定式 todo 动名词 doing 而把真正主语的置于句尾 三 it用作形式主语 It作形式主语时的几个常见句型 Itiskind ofsb todosth 该句型中的不定式如果须要逻辑主语 则须要前置介词of 而句型中的形容词必须是能表示逻辑主语特征的形容词 常见的有 bad brave careless clever cruel foolish honest horrible kind lazy modest naughty nice 有教养的 polite rude silly stupid wise wrong这个句型可以改写为 sb iskindtodosth 2 Itiseasy forsb todosth 此处adj 通常为描述事件的形容词 easy difficult hard necessary unnecessary possible impossible likely unlikely right wrong important unimportant legal illegal well mannered ill mannered polite impolite clear obvious certain suitable proper fit useful useless dangerous Itisillegal forateenager todriveacarwithoutalicense 3 It v n etc todosth Ittakes tooksbsometimetodosth 做 要花某人 Ittookme3hourstorepairmycomputer 4 Itisnogood use pleasure 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 nouse novalue noimportance worthwhile worth awasteof It snousecryingoverthespiltmilk 5 Itdoesn tmatterwhether if 不论 是否 没关系 Itdoesn tmatterwhetherheisformyplanornot Ithappens seems appears that IthappenedthatIhadseenthisprobleminsomebook Itissaid reported learned believed thought known told hoped that 据说 据报道 据悉 ItissaidthathehasgonetoNewYorktoattendamedicalmeeting Itisapity ashame that Itisapitythatwehavelostthematchwithaclosescore Itisimportant necessary right strange natural that 记住that后的从句应用虚拟语气 should 动词原形 should可以省去 Itissuggested ordered that 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 Itisuptosb todosth 该句型为 该由某人做 Itisuptohimtocleanourclassroomtoday 今天应由他做教室清洁 Itisuptoparentstoteachtheirchildrenmanners 该由父母教孩子礼貌 Wethinkitimportanttolearnaforeignlanguage 该句型中的it作形式宾语 为了记忆方便我们可称该句型为 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that引导的宾语从句 四 it作形式宾语 Ithinkitnousearguingwithhim Iconsideritarulenottosleepinclass IfounditveryinterestingtostudyEnglish Hemadeitclearthathewasnotinterestedinthissubject it提前 指代后面的事情 Youmaydependonitthatyourparentswillhelpyouwheneveryouneedit Idon tlikeitwhensomeoneasksmeaboutmypersonalthings 五 it用于强调句型中 Itis was 被强调部分 that who Itisnotuntil 被强调部分 that ImetTomintheparkyesterday 1 ItwasIwho thatmetTomintheparkyesterday 2 ItwasTomwho thatImetintheparkyesterday 3 ItwasintheparkthatImetTomyesterday 4 ItwasyesterdaythatImetTominthepark Itwasfiveo clock Igothome Itwasatfiveo clock Igothome when that 强调状语从句 Itisbecausehewasillthathedidn tcometoschoolyesterday Itwasonlywhenthewarwasoverin1949thathewasabletogetbackhome 时态与谓语单复数 Itis was 此谓语用单数 that who 固定句型 Itisyouthat whoaretoblame 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 译成汉语 直到 才 可以说是not until 的强调形式 例如 ItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar NotuntilshetookoffherdarkglassesdidIrealizeshewasafamousfilmstar Ididn trealizeshewasafamousfilmstaruntilshetookoffherdarkglasses 由it引导的强调句结构 Itis was 被强调部分 that who 句子其他部分注意 此结构强调的成分仅限于主语 宾语和状语 如 原句 Myfatherdidtheexperimentinthelabyesterdayevening 强调主语 Itwasmyfatherwho thatdidtheexperimentinthelabyesterdayevening 强调宾语 Itwastheexperimentthatmyfatherdidinthelabyesterdayevening 强调时间 Itwasyesterdayeveningthatmyfatherdidtheexperimentinthelab 强调地点 Itwasinthelabthatmyfatherdidtheexperimentyesterdayevening e g Itwasinthatcitythatwemetforthefirsttime ItwasnotuntilhetoldmethatIknewthetruth 1 强调句的一般疑问句句型 Is Was it 所强调的部分 that who whom 其余部分 WasitTomthat whoIsawyesterdayhere Wasitateighto clockthatyoubegantowork 注意 2 强调句的特殊疑问句句型 疑问词 所强调的部分 that who 其余部分 Wherewasitthatyoupickedupthewallet Whywasitthathecouldn tanswerthequestion 3 名词性从句 宾语 表语从句 强调句的基本结构 疑问词 强调部分 itisthat 其它成分 Ijustwonderwhatitisthatmakeshimexcited Heisunwillingtotellmewhomakeshimangry Heisunwillingtotellmewhoitisthatmadehimangry 4 判断是否是强调句 可把Itis was that去掉 剩余部分如果是一个完整的句子 就是强调句 ItwasinthestreetthatImetherfather InthestreetImetherfather Itwasbecauseshewasillthattheydidn taskhertodothejob Becauseshewasill theydidn taskhertodothejob 1 Itwasin1945thatWorldWarIIended 强调句 2 Itwas1945whenWorldWarIIended 定语从句 3 ItwasalongtimesinceImetyoulast 时间状语从句 5 若原句是not until句型 在强调until部分时 要把否定形式放入被强调部分 如 Hedidn tleaveuntillreturned ItwasnotuntilIreturnedthatheleft Ididn trealizeshewasafamousfilmstaruntilshetookoffherdarkglasses NotuntilshetookoffherdarkglassesdidIrealizeshewasafamousfilmstar ItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar 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It shardtomakeittothetopinshowbusiness 2 在口语中相当于fixthedatefor 表示 约定好时间 例 Shallwemeetnextweek OK WejustmakeitnextSaturday 2 takeiteasy相当于Don tworryordon thurry 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 表示 那得看情况 还没有定下来 Areyougoingtothecountrysideforholiday It Thatalldepends 4 seetoit 由 负责 保证 Iwillseetoitthateverythingisinplace 5 Whenitcomesto 当谈到 Whenitcomestoplayingfootball Tomisthebest Itistime abouttime hightime that did It shightimethatweleft Itisthefirst second timethat 完成时 It sthefirsttimethatIhavebeenpraised Itis since Itisthreeyearssincetheygotmarried Itis was when I