虛擬語(yǔ)氣常見(jiàn)句型

1、對(duì)過(guò)去的虛擬Ifsb.haddonesth,sb.wouldhavedonesth對(duì)現(xiàn)在的虛擬Ifsb.didsth,sb.woulddosth對(duì)將來(lái)的虛擬Ifsb.didsth,sb.woulddosthIfsb.weretodosth,sb.woulddosthIfsb.shoulddosth,sb.woulddosth錯(cuò)綜虛擬條件句（if+過(guò)去完成時(shí),sb.woulddosth）Ifthedoctorhadcomesoonerlastnight,Tomwouldbealivetoday.Ifyouhadstudiedhardatthattime,youwouldbeakeyunivers

2、itystudentnow.虛擬條件句，從句可以省略if,但謂語(yǔ)動(dòng)詞要部分倒裝.含蓄虛擬條件句標(biāo)志性詞匯：without（如果沒(méi)有）,butfor（要不是）,otherwise/or（否則）*if條件句可以與without/butfor互相轉(zhuǎn)換，意思相同。表示建議要求命令等動(dòng)詞以及相應(yīng)的名詞引導(dǎo)的名詞性從句，通常跟should結(jié)構(gòu).lnsist/suggest/advise/command/order/urge/recommend/require/request/proposethatsb.shoulddosth*insist做認(rèn)為”講時(shí),相當(dāng)于think,不用should結(jié)構(gòu).Suggest

3、做暗示,表明講時(shí),相當(dāng)于imply,不用should結(jié)構(gòu).&常見(jiàn)的should結(jié)構(gòu)句型Itnecessary/natural/important/vital/essential（關(guān)鍵的，至關(guān)重要的）/probable（很可能）/advisable/desirable（明智的，可|取的）/Strange/surpriSing/funn,thatsb.shoulddosthItisapity/ashame/nowonderthatsb.shoulddosth.wish+賓語(yǔ)從句,要用虛擬語(yǔ)氣.Wishthatsb.haddonesth（對(duì)過(guò)去虛擬）Wishthatsb.didsth（對(duì)現(xiàn)在虛擬）Wishthatsb.woulddosth（對(duì)將來(lái)虛擬）wouldrather后的虛擬語(yǔ)氣只有兩種句型：wouldrathersb.didsth（對(duì)現(xiàn)在和將來(lái)虛擬）wouldrathersb.haddonesth（對(duì)過(guò)去虛擬）Ifonly!（虛擬語(yǔ)氣）asif/asthough如果表示與事實(shí)相反的情況，要用虛擬語(yǔ)氣.asifsb.didsth（對(duì)現(xiàn)在虛擬）asifsb.haddonesth（對(duì)過(guò)去虛擬）asifsb.woulddosth（對(duì)將來(lái)虛擬）is13.lthigh/abouttime+虛擬語(yǔ)氣Itishigh/abouttimetha