虚拟语气-公开课-精品课件-全PPT文档格式.ppt
《虚拟语气-公开课-精品课件-全PPT文档格式.ppt》由会员分享，可在线阅读，更多相关《虚拟语气-公开课-精品课件-全PPT文档格式.ppt（139页珍藏版）》请在冰豆网上搜索。
一是表示说话人的愿望、要求、命令、建议等（常用在名词性从句中）。
简言之，即：
不是事实或不大可能发生的事情，就用虚拟语气来表述,虚拟语气的概念,Subjectivemood,If型Should+v型类似if型,。
混杂条件句（各自为准）Were,had,should提前，省略if,1.一个坚持，两个命令，三个建议，四个要求。
2.Itis（necessary，strange）+that,wish/asifWouldrather/ifonlyItis（high）timethatButfor/otherwise/without/inthatcase,1.过去式2.过去完成3.could、would、might+v,1.过去式2.过去完成,Should（不省）+v/过去式,1.Would,could,should,might+v,2.would,could,should,might+havedone,insistsuggest,虚拟语气的常考形式：
If引导的条件句,a.if真实条件句表示条件是真的或有可能实现的,采用陈述语气。
b.if虚拟条件句表示条件是虚拟的或几乎无法实现的,采用虚拟语气。
Ifwehavechances,wecanhavefurthercooperation.,IfIhaveanotherchance,IwillvisitChinaagain.,if真实条件句用于陈述语气,假设的情况很有可能发生,其中if是“如果”的意思,if条件从句一般现在时,主句willshall+动词原形情态动词+动词原形,Whatwillyoudoifitrainstomorrow?
Iwillsleepathomeifitrainstomorrow.,if虚拟条件句表示条件是虚拟的或几乎无法实现的,采用虚拟语气。
if引导的虚拟条件句,与现在事实相反,与过去事实相反,与将来事实可能相反,if虚拟条件句,If+主语+had+动词的过去分词,即：
If+过去完成时态,主语+would（should/might/could）havedone,IfYaoJiaxinhaddrivenmorecarefully,hewouldnothavecausedthecaraccidentinMay,2009.,与过去事实相反,IfTomhadlearnthowtoswim,hewouldnothavebeentrappedonthatislandforfouryears.,与过去事实相反,Ifhehadgotupearlier,hecouldhavecaughtthetrain.,与过去事实相反,Iftheweatherhadbeenbetter，wecouldhavehadapicnic.Butit_allday.A.rainedB.rainsC.hasrainedD.israining解析：
句子前半部分陈述的是与过去事实相反的事情，所以用了虚拟语气。
“下了一天的雨”是事实，所以用陈述语气。
因为是发生在过去的事实，所以正确答案为A。
if虚拟条件句,If+主语+动词的过去式（be动词一般用were）,主语+would（should/might/could）动词原形,即：
If+一般过去时态（be动词一般用were）,IfIhadagreatdealofmoney,Iwouldbuyavilla（别墅）formyparents.,与现在事实相反,?
IfIweretheschoolmaster,Iwouldletthestudentsgetupalittlelatertogetabettersleep.,与现在事实相反,Ifitwerenotforthefactthatshe_sing，Iwouldinvitehertotheparty.A.couldntB.shouldntC.cantD.mightnot解析：
that从句为同位语从句，描述的是事实，用陈述语气。
正确答案为C。
if虚拟条件句,1、If+主语+动词过去式2、If+主语+wereto+动词原形3、If+主语+should+动词原形,主语+would（should/might/could）动词原形,IfImetObamasomeday,Iwouldshakehandswithhim.IfIweretomeetObamasomeday,IfIshouldmeetObamasomeday,与将来事实相反,IfI_plantodoanythingIwantedto,IdliketogotoTibetandtravelthroughasmuchofitaspossible.（05湖北）A.wouldB.couldC.hadtoD.oughtto解析：
句子描述的是与将来事实相反的事情，所以正确答案为B。
1、If+主语+动词过去式2、If+主语+wereto+动词原形3、If+主语+should+动词原形,If+主语+动词的过去式（be动词一般用were）,主语+would（should/might/could）动词原形,即：
If+一般过去时态（be动词一般用were）,If+主语+had+动词的过去分词,即：
If+过去完成时态,主语+would（should/might/could）havedone,主语+would（should/might/could）动词原形,Youdidntletmedrive.Ifwe_inturn,you_sotired.（96全国）A.drove;
didntgetB.drove;
wouldntgetC.weredriving;
wouldntgetD.haddriven;
wouldnthavegot选择答案D,1.（2010高考英语天津卷）Johnwenttothehospitalalone.Ifhemeaboutit,Iwouldhavegonewithhim.A.shouldtellB.tellsC.toldD.hadtold,【答案】D【解析】主从句都是对过去发生事实的一种意愿表达，从句采用havedone的结构，故选D。
2.（2010高考英语陕西卷）Ifwe_theotherroad,wemighthavearrivedhereintimeforthemeeting.A.takeB.hadtakenC.tookD.havetaken,【答案】B【解析】主句的谓语动词形式mighthavearrived可知题干是与过去事实相反选B。
3.（2010高考英语湖南卷）Ifhemyadvice,hewouldnthavelosthisjob.A.followedB.shouldfollowC.hadfollowedD.wouldfollow,【答案】C,4.（2010高考英语北京卷）-Theweatherhasbeenveryhotanddry.-Yes.Ifithadrainedevenadrop,thingswouldbemuchbetternow!
Andmyvegetables_.A.wouldntdieB.didntdieC.hadntdiedD.wouldnthavedied,【答案】D【解析】表示与过去事实相反的假设，故主句用would/could/might/should+havedone，即D项正确。
注意以下问题：
1.错综时间虚拟条件句2.（if省略）倒装虚拟条件句3.含蓄条件句,通常情况下,在非真实条件句中主句和从句的谓语动词所指时间是一致的,但有时也可能指不同的时间,这时要根据上下文的意思采用不同的谓语动词形式。
虚拟条件句和主句动作如发生的时间不一致，主句和从句的谓语要根据各自所指的不同时间选用适当的虚拟语气形式，这种句子叫做错综时间条件句。
3、错综时间虚拟句（混合虚拟条件句）,1、If+主语+动词过去式2、If+主语+wereto+动词原形3、If+主语+should+动词原形,If+主语+动词的过去式（be动词一般用were）,主语+would（should/might/could）动词原形,即：
If+过去完成时态,主语+would（should/might/could）havedone,主语+would（should/might/could）动词原形,错综时间条件句,错综时间条件句,1）从句与过去相反，主句与现在相反Ifithadrainedlastnight,itwouldbeverycooltoday.2）从句与现在相反，主句与过去相反IfIwereyou,Iwouldnthavemissedthefilmlastnight.3）从句与现在相反，主句与将来相反Ifyouhesitatedthismoment,youmightsufferinfuture.4）从句与过去相反，主句与将来相反Iftheyhadlefthomeintheearlymorning,theywouldarriveinhalfanhour,1）.如果你当时听了我的话，现在就能完成这份工作了。
Ifyouhadfollowedmyadvice,youwouldbeabletofinishtheworknow.2）.如果我是你，我就去参加她的生日晚会了IfIwereyou,Iwouldhavegonetoherbirthdayparty3）.假若你不借钱给我，我不可能买下这幢新房，很可能现在还住在危房里。
Ifyouhadntlentmesomemoney,IcouldnthaveboughtthenewhouseandmostlikelyIwouldbestilllivinginthedangeroushousenow.,Ifhe_hislegsyesterday,he_withusnow.A.hadnthurt;
wouldgoB.hadnthurt;
wouldhavegoneC.didnthurt;
wouldgoD.didnthurt;
wouldhavegoneItishardformetoimaginewhatIwouldbedoingtodayifI_love,attheageofseven,withtheMelindaCoxLibraryinmyhometown.A.wouldnthavefallenB.hadnotfallenC.shouldfailD.weretofail,2.在虚拟条
升级会员 