高中英语 Unit 4 Global warming Period 3 Grammar同步课件 新人教版选修6.ppt

period3grammar it用于强调句式 itis was 被强调部分 that who 句子的其余部分 结构 it的用法 1 it结构概述it用在强调结构中 为了强调句子的某一成分 通常为主语 宾语和状语 mymothermettominthestreetyesterday itwasinthestreetthatmymothermettom 我母亲就是在大街上遇到了汤姆 2 it结构在句中的应用 1 强调主语it sonlyiwhoamwillingtogotothecinema 想去看电影的只有我 2 强调宾语itwasherthatimetyesterday 我昨天见到的是她 3 强调状语itwasbecausehermotherwasillthatshedidn tgotowork 是因为母亲病了她才没有去上班 3 it结构的否定句itwasnotforseveralyearsthatihadanopportunityofseeinghimagain ididnothaveanopportunityofseeinghimagainforseveralyears 我有好几年没有机会再见到他了 4 it结构的疑问句 1 这种强调句的一般疑问句只需把is was提前 wasityouthatbrokethewindow 是你把窗户打破了吗 isitprofessorwangwhoteachesyouenglish 是王教授教你们英语吗 2 这种强调句的特殊疑问句 只需在一般疑问句前加上疑问词就可 whowasitthatbrokethewindow 打破窗子的是谁 whenwasitthatyoucalledmeyesterday 你昨天是什么时候打电话给我的 whatisitthatyouwantmetodo 你要我做的是什么 howwasitthatyousucceeded 你是怎么成功的 5 有时可用itmightbe that itmusthavebeen that 句型表示强调itmightbehisfatherthatyou rethinkingof 你关心的可能是他父亲 itmusthavebeenhisbrotherthatyousaw 你看到的想必是他的兄弟 6 在现代英语中 that whom可省略wasitinnanjing that youfirstmethim 你是在南京第一次碰到他的吗 itwasmymother whom yousawtheotherday 你几天前见到的是我妈妈 7 这一强调句型可用于原因状语从句 当原因状语从句是as since引导时 应改为because引导 但结果状语从句 条件状语从句 让步状语从句等不能用于这一强调句型shemissedthefirstbussinceshegotuplate itwasbecauseshegotuplatethatshemissedthefirstbus 她因起晚了而误了第一班车 8 使用这一强调句型时 需注意否定转移moneycan tbuyeverything itisnoteverythingthatmoneycanbuy 钱不能买到一切 hedidn tgotobeduntiltwelveo clocklastnight itwasnotuntiltwelveo clocklastnightthathewenttobed 昨晚他12点才去睡觉 9 用这一强调句型时 要注意以下几点 1 不论强调句子的哪一部分 都可用that连接句子的其余部分 2 被强调部分指人时 可用who取代that 3 如果被强调部分指人 并且作后面句中的宾语时 也可用whom代替who 4 that who等常常被省略掉 特别是在口语中 在强调直接宾语或间接宾语 时间或地点状语时 5 如果被强调的主语为人称代词时 可用主格 也可用宾格形式 6 被强调部分通常不能用不定代词 除非其后还有定语 7 如果被强调部分在后面的句子中有定语时 要用whose引导后面的句子 8 在强调介词宾语时 介词常置于whom等之前 介词 whom 但也可把介词放在其宾语之前 或放在句末 9 如果强调的是主语时 that或who之后的谓语的人称和数要与被强调的主语保持一致 但在口语中的个别情况下 也可能遇到与it一致的现象 10 it之后的be动词的时态通常要与that之后的谓语呼应或一致 11 这一句型通常不能用来强调由since as why although whereas等引导的从句 句型转换1 iamenthusiasticaboutplayingfootballnow itis who thatamenthusiasticaboutplayingfootballnow itis thatiamenthusiasticaboutnow itis thatiamenthusiasticaboutplayingfootball 答案 i playingfootball now 2 hesucceededinconductingtheexperimentunderhisteacher sinstructions itwas thathesucceededinconductingtheexperiment 答案 underhisteacher sinstructions 3 whilewatchingthefootballgame theykeptshoutingatthetopoftheirvoices itwas thattheykeptshoutingatthetopoftheirvoices 答案 whilewatchingthefootballgame 4 whattheprofessorsaidhadagreateffectonus itwas thathadagreateffectonus 答案 whattheprofessorsaid 对画线部分进行强调1 elizabethfirstmetmr smithinnewzealand 答案 itwasinnewzealandthatelizabethfirstmetmr smith 2 marktwainspentmuchofhischildhoodalongthemississippiriver 答案 itwasalongthemississippiriverthatmarktwainspentmuchofhischildhood 3 onlywhenirereadhispoemsrecently ibegantoappreciatetheirbeauty 答案 itwasonlywhenirereadhispoemsrecentlythatibegantoappreciatetheirbeauty 4 notwhoisrightbutwhatisrightisofimportance 答案 itisnotwhoisrightbutwhatisrightthatisofimportance 5 ididn tfindwehadalotincommonuntilwehadstayedtogetherforacoupleofweeks 答案 itwasnotuntilwehadstayedtogetherforacoupleofweeksthatifoundwehadalotincommon 6 becausehewasseriouslyill hedidn tcometoschoolyesterday 答案 itwasbecausehewasseriouslyillthathedidn tcometoschoolyesterday 对画线部分进行强调1 didheworkwherehisfatherhadstudied 答案 wasithewho thatworkedwherehisfatherhadstudied wasitwherehisfatherhadstudiedthatheworked 2 mymothermettominthestreetyesterday 答案 itwasinthestreetthatmymothermettomyesterday 3 hedidnotrealizehismistakesuntiltheplanwascompletelyruined 答案 itwasnotuntiltheplanwascompletelyruinedthatherealizedhismistakes 4 ican tquiterememberwhenyoustarteddoingthework 答案 ican tquiterememberwhenitwasthatyoustarteddoingthework 根据提示翻译句子1 正在打电话的是张教授 强调主语 答案 itisprofessorzhangwhoistalkingonthephone 2 病人需要的是更好的食物和更多的阳光 强调宾语 答案 itisbetterfoodandmoresunshinethatthepatientneeds 3 奥林匹克竞赛是从什么时候开始的 强调时间状语 答案 whenwasitthattheolympiccompetitionstarted 4 第二十九届奥运会在中国举行 强调地点状语 答案 itisinchinathatthe29tholympicgamesareheld 读写任务 四 说明文的概括一 说明文概括的写作指导 例3 请根据以下的任务说明和写作要求 写一篇150词左右的英语短文 阅读材料 whichisaneffectivewayforstudy thereisagrowingdebateaboutthemosteffectivewayforstudentstostudy traditionallystudyingalonewasthoughttobethebestwaytoensuregoodexamresults whenstudyingalone youcanfocusyourmindbetterthanwhenyouarewithothers youalsohavethefreedomtochoosewhattopictostudyandwhen asyoudon tneedtheagreementofothers studentsthatprefertostudyaloneoftensaythatwhentheystudywiththeirclassmatestheywastealotoftimebecausethediscussionisoftenaboutnon studytopicssuchastelevisionorholidays inthelastfewyears however moreandmorestudentshavestartedstudyingingroups thereareseveralreasonsmanystudentspreferthismethods first theyfindthatstudyingismorefunastheycansharetheexperiencewithothersratherthanstayingintheirrooms ingroups theycandiscussthesubjecttogetherandwhensomethingisnotunderstoodtheycanaskeachotherquestions theycanusetheknowledgeoftheirclassmatestohelptheirclassmatestohelpimprovetheirownknowledge finallybydiscussingthetopictheyareabletobothunderstandandrememberitbetter 文章客观的语气与它所采用的对比写作方法都证明了它是说明文 文章客观地对比了两种学习方式的利弊 但是没有主观地把其中一个观点强加给读者 因为作者本人没有表达观点 两个观点的论据已经画线 由于内容比较散乱 我们要浓缩一下 我们首先分析一下学生的样本 看看存在什么问题 如何改进 学生样本1thisarticletalksaboutwhethertostudyaloneorstudyingroups bothstudyingaloneandstudyingingroupsarehavingadvantagesanddisadvantagesoftheirown 学生样本2thispaperdiscussestwoideasabouthowtostudy ononehand somestudentslikestudyingalone becausetheycanusetheirtimebetter ontheotherhand studentslikestudyingingroupsbecausetheycancommunicatewitheachothe