it的用法讲解---绝对经典系列.ppt

it的用法 一 代词人称代词it可以用来代替一个名词 短语 句子 以免重复 1 指代刚提到过的同一事物 同类 同一 Thisismynewcar Iboughtityesterday 2 指动物或不考虑性别的婴儿Whereisthecat It sunderthebed Thebabycriedwhenitwashungry 3 在情景中确认某人或事物 不知性别的人 Whoisit It sme 敲门 Who sitoverthere It sthemilkman 4 指代前句或后句所述的情况 事情HesmokesinbedandIdon tlikeit Itwouldbegreatifyoucouldjoinus 5 指时间 距离 天气或环境等 非人称代词 Whattimeisit It sseven It sabout50kilometersfromheretomyhome Itissnowing Itwasveryquietinthegarden Iwasdisappointedwiththefilm Ihadexpected tobemuchbetter A thatB thisC oneD it 2 Tom smotherkepttellinghimthatheshouldworkharder didn thelp A heB thatC sheD butit 二 引导词it 1 it用作形式主语 当 作主语时 常用it做形式主语 It sapitytorefuse 拒绝是令人遗憾的 It snousesayinganymoreaboutit 再谈这事没有用 It snotknownwhereshewent 她到哪里去了没人知道 不定式 动名词 从句 一it用作形式主语 注 It snouse nogood nopleasure useless awasteof doingB Itissaid reported believed expected accepted that 据 报道 认为 C Ithappens appears seems that Itstruckme occurredtomethat 突然想到 D Itisapity nowonder that E Itdoesn tmatterthat 没关系 Itmakesnodifferencethat 没影响F It simportant necessary easy kind sbtodosth for of 他说什么都没关系 他好像总是对的 碰巧我当时没有带钱 据说他已经入党了 Itdoesn tmatterwhathesaid Itseemsthatheisalwaysright IthappenedthatIdidn thavemoneyonme Itissaidthathehasjoinedtheparty difficulttobeinaforeigncountry especiallyifyoudon tspeakthelanguage ThatisalwaysB ItisalwaysC ItwouldbealwaysD Thatwillalwaysbe 2 onedaytheywillhaveenoughanimalstosetthemfree ItishopedforB whatishopedthatC AsishopedthatD Itishopedthat 2 it用作形式宾语 当 等用作宾语且其后跟有 时 使用形式宾语it 而将真正的宾语移至句末 这类的动词有使役动词 find make feel think consider seetoitthat 务必 等 如 Ifinditeasytogetonwithher Ithinkitbestthatyoushouldstayhere 不定式 动名词 从句 宾补 it用作形式宾语 3 句式A 喜好 enjoy like dislike love hate appreciateitwhen if that Idon tlikeitwhenpeopletalkwiththeirmouthsfull Iappreciateitifyoucanhelpme 他讨厌别人用他的自行车 我不喜欢你生气的样子 B 固定句式 我们花费10天去那里 Ittook 轮到你来回答问题了 It s turn 该吃饭了 It stimeto Hedislikes hatesitthatpeopleusehisbike Idon tlikeitwhenyouareangry us10daystogothere your toanswerthequestion havedinner 1 Wemustmake tothepublicthatsomethingshouldbedonetostoppollution WhatisclearB itisclearC itclearD thatclear2 Ihate whenpeopletalkwiththeirmouthsfull A itB thatC theseD them 1 It s about high time that 从句 虚拟 2 It sfirst second time that 从句 某人第几次做某事 从句用完成时 3 It s hasbeen 时间段 since 从句 自从 有一段时间了 4 It s 时间段 before 从句 过多长时间才 5 Itisuptosbtodosth 该由某人做某事 6 Ifitwerenotfor Ifithadn tbeenfor 若不是因为 7 IoweittoyouthatIamstillalive 归功于 多亏有你我才仍然活着 8 Itookitforgrantedthathewouldhelpus 我认为他会帮助我们的 认为 理所当然 9 Idependonitthathewillgowithus 我还指望着他能和我们一起去呢 4 强调句Itis was that who 注意以下几点 A It后用is was这种单数形式 B 被强调部分是指人时 用 被强调部分指物时 用 C 被强调部分是指时间或地点时 用that 一般不用 之类的 ItisIwhoamright 是我对 他是死于日本 他是昨天结婚的 她是住在什么地方 是谁教你们英语 他是什么时候来的 that who that when where ItwasinJapanthathedied Itwasyesterdaythathegotmarried Whereisitthatshelives WhoisitthatteachesyouEnglish Whenwasitthathecame ThecomputersinourschoolareconnectedtotheInternetwhilethoseintheirschoolaren t Thefootballplayersonourteamseemtobemoreenergeticthanthoseonyourteam That those一般用于替换有定冠词的名词 one ones用于替换有不定冠词的名词 Thestyleofthebuildingissimilartothatofatemple ACDplayermadeinJapancostsmorethanonemadeinHongKong That those一般不带前置定语 但必须有后置定语 One ones都可 当替换词的后置定语用所有格的of短语或当替换词被所有格修饰时 不用one ones而用thatof thoseof Ilikethevasebetterthantheone thatinanothershop Thewindowsofyourflatarecleanerthanthoseofmine Agrandparent sjobiseasierthanthatofaparent 2 it this和that 都可以替代前文已提到的事或情况 细微差别在于it不如其余两者那么强调 Soshedecidedtopaintthedoorpink Itupsettheneighboursabit Soshedecidedtopaintthehousepink Thatreallyupsettheneighbours asyoucanimagine 当前面提到的事物不止一件时 it通常指最先提到的事物 而This that是指最后提到的事物 Wekeeptheicecreammachineinthespareroom Itismainlyusedbythechildren 指themachine Wekeeptheicecreammachineinthespareroom This Thatismainlyusedbythechildren 指thespareroom This可以出现在它所指代的事物之前 而that则指上文所提到的事物 Listentothis Wewillhavethreedaysoff Apennysavedisapennyearned Whosaidthat 3 It和one I