虛擬語氣小結語氣是英文中謂語動詞的一種變化形式，用來表示說話者的意圖和態度。虛擬語氣表示所說的話只是一種主觀的愿望、假想或建議等。它主要用于以下幾種句式中。非真實條件句從句的謂語主句的謂語與現在事實相反過去時Would/could/should/mightdo與過去事實相反過去完成時Would/could/should/mighthavedone與將來事實相反過去時weretodoshoulddoWould/could/should/mightdoIfIwereabird,Iwouldflyinthesky.（與現在事實相反）IfIhadworkedhardlastyear,Iwouldhavebeenadmittedtotheuniversity.（與過去事實相反）Ifitshouldraintomorrow,wewouldstayathome.（與將來事實相反）錯綜時間條件句有時在非真實條件句中，主句和從句中的謂語動詞所表示的動作并不是同時發生的，這時動詞的形式要按照各自的時間進行調整，這類句子就叫錯綜時間條件句。例如：Ifyouhadtakenmyadvice,youwouldbebetternow.IfIwereyou,Iwouldhavetakenhisadvice.含蓄條件句有時一個假設的情況并不用條件從句表示，而用其他方式來表示，這樣的句子叫含蓄條件句。常用于這類結構的有without、or、otherwise、butfor、incase、suppose等。例如：Withoutwater,fishwoulddie.Butforyourhelp,Icouldn’thavemadesuchgreatprogress.Iwouldhavetakenpartinthematch,butIwasbusythatday.賓語從句在表示“建議、命令、要求”等動詞后的賓語從句中，謂語動詞要用“（should）+動詞原形”。例如：Heinsistedthatwe(should)makeanapologytohim.Theyrequestedthatthestudents(should)learnasecondlanguage.wish后的賓語從句需要用虛擬語氣。wishthat+主語+haddone（與過去事實相反）wishthat+主語+did（were）（與現在事實相反）wishthat+主語+would/coulddo（與將來事實相反）HowIwishthatIwereanadult.Hewishesthathecouldbecomeascientistoneday.WewishthatyouhadcometoourNewYear’sparty.表語從句和同位語從句主句中有suggestion、proposal、order、plan和idea等詞時，表語從句或同位語從句用虛擬語氣，謂語動詞要用“（should）+動詞原形”。例如：Mysuggestionisthatallofyou(should)readloudlyinthemorning.Hisproposalthatthey(should)challengetheothergroupstoafriendlycompetitionispraisedbytheteacher.定語從句Itis/was(high/about)timethat+主語+did/shoulddo（should不可以省略）Itishightimethatyoushouldgotobed.Itishightimethatwegotdowntowork.練習：----DoyouhaveBetty’sphonenumber?----Yes.Otherwise,I________(be)abletoreachheryesterday.Ifthenewsafetysystem________(put)touse,theaccidentwouldneverhavehappened.Hecommandedthatallthegate_______(shut)whenitwasgettingdarkincasethievescamein.Inmyopinion,itisabouttimethatwe_______(have)newcomputers.IwishI______(be)atmysister’sweddinglastTuesday,butIwasonabusinesstripinNewYorkthen.Butfortheirhelp,we_______(finish)t