搜索
选修六——it的用法•1.用作人称代词，代替前文提到过的事物。•Thetrainhasarrived.•Itarrivedhalfanhourago.•火车已经到了。它是在半小时前到达的。2.用作代替指示代词this,that•——What’sthis?•——It’saknife.••3.起指示代词的作用，指人或事物•——Whoisknockingatthedoor?•——It’sme.4.用作非人称代词•1.Itrainsheavily.天气•2.Itis20kmfromheretoJames’.距离•3.ItisNovember11,2005.日期•4.Itis9o’clockatnight.时间•5.It‘llbelovelyinthegardentonight．环境5.作形式主语Itislikelythathewillsucceed.6.作形式宾语Wefoundithardtodothejob.•(1)Itistime(forsb.)todosth.•例：Itistimeforustobeginourclass.•(2)Itis+形容词（+of/forsb.)+todosth.•例：Itiskindofyoutohelpus.Itis…句型•(3)Itis+形容词+that+sb.+(should)dosth.•例：Itisimportantthatweshouldpaycloseattentiontograin.•很重要的一点是我们应该密切的关注谷物的情况。•(4)Itisnouse/good+doingsth.•例：Itisnousetryingagain.•再试一遍也没有用。(5)Itissaid/reported/announced/(well)knownthat…例：Itissaidthathewillcomeheretomorrow.(6)Itis/was+时间+since….例：ItisthreeyearssinceImetherinBeijing.•(7)Itis+时间+before….(8)Itisuptosb.todo…(9)Itis/was/willbethefirsttimethat….强调句的基本结构•Itis/was+被强调的部分+that(who)+其他成分.例：Itwasinthestreetthatyoumether.强调句的几种变化形式•（1）一般疑问句•WasityouthatIsawlastnightattheconcert?•昨晚在音乐会上我看见的是你吗？•（2）特殊疑问句•Wherewasitthatyoumethim?•你是在哪见到他的？•（3）以名词性从句的形式出现•例：I’veforgottenwhereitwasthatyouputthedictionary.•我忘了你把词典放在哪儿了。•（4）与定语从句相结合•例：ItwasinthelabwhichwastakenchargeofbyProfessorHarriesthattheydidtheexperiment.•他们是在Harries教授管理的实验室里做的那个验。•（5）与not…until句型相结合•例:ItwasnotuntilitgotdarkthatIleft.•我是在天黑前离开的。（1）强调句能够强调除谓语以外的任何句子成分。（3）判断强调句的一个简单方法：省去itis/was及that,若句子仍然成立，则原句为强调句型，否则不是。补充部分（2）若被强调的部分是人，可用who代替that。WecalledonProfessorWanginhisofficethismorning.weProfessorWangEg:Itwaswewho/thatcalledonProfessorWangathisofficethismorning.ItwasProfessorWangwhom/that/whowecalledonathisofficethismorning.WecalledonProfessorWanginhisofficethismorning.inhisofficethismorningItwasinhisofficethatwecalledonProfessorWangthismorning.ItwasthismorningthatwecalledonProfessorWanginhisoffice.•1.Wasit____shesaidorsomethingthatshedid____youwereangryatsomuch?•A.what,thatB.that,which•C.that,whatD.what,which•2.---____thathemanagedtogettheinformation?•---Oh,afriendofhishelpedhim.•A.WherewasitB.Whatwasit•C.HowwasitD.whowasit随堂练习AC•3.It____wehadstayedtogetherforacoupleofweeks____Ifoundwehadalotincommon.•A.wasuntil,whenB.wasuntil,that•C.wasn’tuntil;whenD.wasn’tuntil;that•4.---Howunhappyyourroommatelooks!•---Yes,buthe’snotwillingtotellmewhatitis____troublehim.•A.whatB.whichC.asD.thatDDThankyou!