it的用法的教学课件.ppt

carefulperson Theuseof It 2012高考英语语法总复习精品课件 Summary Eg Itwaswewho thatcalledonProfessorWangathisofficethismorning ItwasProfessorWangwhom that whowecalledonathisofficethismorning ItwasinhisofficethatwecalledonProfessorWangthismorning ItwasthismorningthatwecalledonProfessorWanginhisoffice 1 ItisonthisarablelandthatthefarmersproducefoodforthewholepopulationofChina 2 Itwasfromtheearly1990sthatscientistsstartedtodevelopnewtechniquestoincreaseagriculturalproductionwithoutharmingtheenvironment 怎样判断强调句 若是强调句 去掉 Itbe that 还应是一个完整的句子 若不是强调句 去掉 Itis that 已不是一个完整的句子 Eg ItistenyearsMissGreenreturnedtoCanada A thatB whenC sinceD as PracticeRewritethesesentences emphasisingtheunderlinedparts EXAMPLE ThefarmersproducethefoodforthewholepopulationofChinaonthisarableland ItisonthisarablelandthatthefarmersproducethefoodforthewholepopulationofChina Thechildrenoftenhelptheirparentsdothefarmwork Itisthechildrenwhooftenhelptheirparentsdothefarmwork 2 In1993 atomatowasdevelopedthatwasverydifferentfromanygrownbefore Itwasin1993thatatomatowasdevelopedthatwasverydifferentfromanygrownbefore 3 ThebiggestproblemofChinafarmersistheshortageofarableland ItistheshortageofarablelandthatisthebiggestproblemforChinesefarmers 4 Theplantsgrowningreenhousesareprotectedfromthewind rainandinsects Itistheplantsgrowninthegreenhousesthatareprotectedfromthewind rainandinsects 5 Futureagricultureshoulddependonhightechnologyaswellastraditionalmethods Itishightechnologyaswellastraditionalmethodsthatfutureagricultureshoulddependon Rewritethesentencesbelow emphasisingasmanypartsaspossible EXAMPLE JiaSixiewroteabookcalledQiminYaoshuduringtheyears533 544 ItwasJiaSixiewhowroteabookcalledQiminYaoshuduringtheyears533 544 ItwasabookcalledQiminYaoshuthatJiaSixiewroteduringtheyears533 544 Itwasduringtheyears533 544thatJiaSixiewroteabookcalledQiminYaoshu ItwasHenrywhogaveGeorgeanewtieforhisbirthdaylastyear ItwastoGeorgethatHenrygaveanewtieforhisbirthdaylastyear ItwasanewtiethatHenrygaveGeorgeforhisbirthdaylastyear ItwaslastyearthatHenrygaveGeorgeanewtieforhisbirthdaylastyear 2 Itwasduringthatperiodoftimethattheymaketheseimportantdiscoveries Itwastheseimportantdiscoveriesthattheymakeduringthatperiodoftime Itwastheywhomakethereimportantdiscoveriesduringthatperiodoftime 3 ItisinSouthAmericathatsomepeoplestillpractisethiskindoffarming ItissomepeopleinSouthAmericawhostillpractisethiskindoffarming ItisthiskindoffarmingthatsomepeopleinSouthAmericastillpractise Practice 1 Wedidn tbeginourlessonuntil tillourteachercamein Itwasnotuntilourteachercameinthatwebeganourlesson Thevillagersdidn trealizehowseriousthepollutionwasuntilallthefishintheriverdied allthefishintheriverdied thevillagers howseriousthepollutionwas It was not until that realized It 试题解析 1 TheParkersboughtanewhousebut willneedalotofworkbeforetheycanmovein A theyB itC oneD which It 试题解析 2 Tom smotherkepttellinghimthatheshouldworkharder but didn thelp A heB whichC sheD it It 试题解析 3 Theweatherturnedouttobeverygood wasmorethanwecouldexpect A whatB whichC thatD it 4 Doyouhaveenoughglassesforeachguesttohave A itB themC thatD one It 试题解析 5 Whydon twetakealittlebreak Didn twejusthave A itB thatC oneD this It 试题解析 6 Hewasnearlydrownedonce Whenwas wasin1998whenhewasinmiddleschool A that ItB this ThisC this ItD that this 7 Itwasnotuntil1920 regularradiobroadcastsbegan A whileB whichC thatD since It 试题解析 7 Itwasnotuntil1920 regularradiobroadcastsbegan A whileB whichC thatD since Regularradiobroadcastsdidn tbeginuntil1920 It 试题解析 8 Coulditbeintherestaurantin youhaddinnerwithmeyesterday youleftbehindyourkeysandwallet A that whichB which thatC where thatD that where It 试题解析 Itcouldbeintherestaurantin youhaddinnerwithmeyesterday youleftbehindyourkeysandwallet It 试题解析 therestaurant in youhaddinnerwithmeyesterday which intherestaurant which Itcouldbeintherestaurantin youhaddinnerwithmeyesterday youleftbehindyourkeysandwallet 高考试题解析 therestaurant in youhaddinnerwithmeyesterday which intherestaurant that 8 Coulditbeintherestaurantin youhaddinnerwithmeyester