it用法归纳(高中英语)

1“it”两项重点用法Mar4.2011这两项重点用法指的是强调句和it做形式成分。一.强调句:一）陈述句：It+is/was+被强调部分+that/who…(强调人时可用who)ImetTominthestreetyesterday.针对各个划线部分变强调句：1)ItwasIthatmetTominthestreetyesterday.2)ItwasTomthatImetinthestreetyesterday.3)ItwasinthestreetthatImetTomyesterday.4)ItwasyesterdaythatImetTominthestreet.二）一般疑问句：1)WasitIthatmetTominthestreetyesterday?2)WasitTomthatImetinthestreetyesterday?3)WasitinthestreetthatImetTomyesterday?4)WasityesterdaythatImetTominthestreet?三）特殊疑问句：1)WhowasitthatmetTominthestreetyesterday?2)WhowasitthatImetinthestreetyesterday?3)WherewasitthatImetTomyesterday?4)WhenwasitthatImetTominthestreet?四）特殊疑问句作宾语从句：Iforgot…1)IforgotwhoitwasthatmetTominthestreetyesterday.2)IforgotwhoitwasthatImetinthestreetyesterday.3)IforgotwhereitwasthatImetTomyesterday.4)IforgotwhenitwasthatImetTominthestreet.结论：特殊疑问句作宾语从句时，主谓词序正常。五）判断强调句的方法：“Itis/was…that…”这个框架拿掉以后，句子仍然成立。高考题：Ijustwonder___thatmakeshimsoexcited.A.whyitdoesB.whathedoesC.howitisD.whatitis（D）难点：Ididnotgotobeduntilmidnight.ItwasnotuntilmidnightthatIwenttobed.二.It做形式成分：形式宾语和形式主语2一）it做形式宾语1.it指代一句话。1)Ihateitwhenpeopletalkwiththeirmouthsfull.2)Ilikeitintheautumnwhentheweatherisclearandbright.3)I’dappreciateitifyouwouldliketoteachmehowtousethecomputer.2.it指代不定式Ithinkitmydutytohelpyou.IthinkitnecessarytoreadEnglishnewspapers.Idon’tthinkitpossibletomasteraforeignlanguagewithoutmuchmemorywork.二）it做形式主语1.Itissaidthat…(known,reported,believed,hoped,thought，decided…)Itisknowntousthataveryimportantmeetingisbeingheldinourschool.2.Itseem/appear/happenthat…Itappearsthateverystudentispolitetoteachers.IthappenedthatLiLeiwasnotpolitethatday.3.Itis+n.+that…1)ItisafactthatEnglishisbeingspokenallovertheworld.2）Itisourhopethatwecanhavealongholiday.4.Itisnouse/awasteoftimedoingsth.Itisnousecryingoverspiltmilk.It’sawasteoftimereadingnovelsnow.5.It指代不定式1)ItisimportanttolearnEnglishwell.2)_____togohiking!A.HowfunitisB.WhatfunitisC.WhatfunofitisD.Whatafunitis(B)