【正文】
ave+過(guò)去分詞”與將來(lái)事實(shí)相反 若與將來(lái)事實(shí)相反,條件從句的謂語(yǔ)用過(guò)去式(be通常用were),主句謂語(yǔ)用“should (would, could, might)+動(dòng)詞原形”:25. If it had been possible, I would have helped him, but I ______ too busy.A.had been B.would be C.were D.was【答案】D【解析】試題分析:句意:如果可能的話(huà),我肯定會(huì)幫助你的,但是我太忙了。對(duì)過(guò)去的虛擬If+主語(yǔ)+had +動(dòng)詞過(guò)去分詞,主語(yǔ)+would / should / might / could have + 動(dòng)詞過(guò)去分詞。所以描述的是過(guò)去的事情,故我過(guò)去很忙應(yīng)該用過(guò)去時(shí)??键c(diǎn):考查虛擬語(yǔ)氣及時(shí)態(tài)的用法。26.If I you, I’d keep quiet and listen carefully in class.A.a(chǎn)m B.will be C.were【答案】C【解析】試題分析: 與現(xiàn)在事實(shí)相反:條件從句用動(dòng)詞過(guò)去式,主句用would/could/should/might+動(dòng)詞原形;與過(guò)去事實(shí)相反:條件從句用had done,主句用would/could/should/might+have done;與將來(lái)事實(shí)相反:條件從句用動(dòng)詞過(guò)去式/should+動(dòng)詞原形/were to do,主句用would/could/should/might+動(dòng)詞原形。句意:如果我是你,我上課就會(huì)保持安靜,認(rèn)真聽(tīng)課。故選C??键c(diǎn):考查虛擬語(yǔ)氣的用法。27.Sir, you should__________ at the red light.But you didn’t.A.stop B.have stopped C.not have stopped D.stopped【答案】B【解析】試題分析:句意:先生,你應(yīng)該在紅燈亮?xí)r停下來(lái)。但你沒(méi)有。這里用虛擬語(yǔ)氣,用情態(tài)動(dòng)詞should + have + 過(guò)去分詞,這是對(duì)過(guò)去的一種虛擬。所以選B。考點(diǎn):考查虛擬語(yǔ)氣。28.(題文)I would wear a shirt and tie to the party if I ________ you. It’s more polite.A.were B.will be C.a(chǎn)m【答案】A【解析】試題分析:與現(xiàn)在事實(shí)相反的虛擬語(yǔ)氣,if從句用過(guò)去時(shí),主句用would/should/might+動(dòng)詞原形。句意:如果我是你,我就穿襯衫帶領(lǐng)帶去參加聚會(huì)。那樣更禮貌。故選A。考點(diǎn):考查虛擬語(yǔ)氣的用法。29.If I you, I would rather at home and watch TV than to the party.A.was;stay, go B.a(chǎn)m;stay, go C.were;to stay, go D.were;stay, go【答案】D【解析】試題分析:句意為:如果我是你,我寧愿在家看電視也不去參加聚會(huì)。根據(jù)語(yǔ)境,這是一個(gè)與現(xiàn)在事實(shí)相反的虛擬條件句,主句用would/should+動(dòng)詞原形,從句用一般過(guò)去時(shí)(be動(dòng)詞用were)。另外,would rather do sth than do sth是固定句型,表示“寧可……也不……”。故選D??键c(diǎn):考查虛擬條件狀語(yǔ)從句。30.If I _____ you, I _____ late for school this morning.A.were, wouldn’t be B.were, wouldn’t C.was, won’t be D.a(chǎn)m, will【答案】A【解析】試題分析;句意:如果我是你,今天早晨我上學(xué)就不會(huì)遲到。與現(xiàn)在事實(shí)相反,故從句用過(guò)去時(shí)態(tài),主語(yǔ)用過(guò)去將來(lái)時(shí)態(tài)。選項(xiàng)B缺少謂語(yǔ)動(dòng)詞。故選A??键c(diǎn):if引導(dǎo)的條件狀語(yǔ)從句點(diǎn)評(píng):虛擬語(yǔ)氣是一種特殊的動(dòng)詞形式,用來(lái)表示說(shuō)話(huà)人所說(shuō)的話(huà)并不是事實(shí),而是一種假設(shè)、愿望、懷疑或推測(cè)。判斷是真實(shí)條件句還是非真實(shí)條件句。只有在非真實(shí)條件句中才使用虛擬語(yǔ)氣。通過(guò)句子意思,看假設(shè)的條件是否能夠?qū)崿F(xiàn),能夠?qū)崿F(xiàn)是真實(shí)條件句,不能使用虛擬語(yǔ)氣;假設(shè)的條件不能實(shí)現(xiàn)則是非真實(shí)條件句。與現(xiàn)在事實(shí)相反 若與現(xiàn)在事實(shí)相反,條件從句的謂語(yǔ)用過(guò)去式(be通常用were),主句謂語(yǔ)用“should (would, could, might)+動(dòng)詞原形” 與過(guò)去事實(shí)相反 若與過(guò)去事實(shí)相反,條件從句的謂語(yǔ)用過(guò)去完成時(shí)(had+過(guò)去分詞),主句謂語(yǔ)用“should (would, could, might)+have+過(guò)去分詞”與將來(lái)事實(shí)相反 若與將來(lái)事實(shí)相反,條件從句的謂語(yǔ)用過(guò)去式(be通常用were),主句謂語(yǔ)用“should (would, could, might)+動(dòng)詞原形”。