【文章內(nèi)容簡(jiǎn)介】 （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”。19．What would you do if you ____ a million dollars?I’d give it to the charityA．win B．won C．will win D．is to win【答案】B【解析】試題分析：句意：如果你贏了一百萬(wàn)美元，你要做什么？——我會(huì)把它捐給慈善機(jī)構(gòu)。結(jié)合語(yǔ)境可知條件從句中描述的是與將來(lái)相反的事實(shí)，故用一般過(guò)去時(shí)態(tài)，選B?？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)話人所說(shuō)的話并不是事實(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”：20． If I_______ one million dollars, I would give it to medical research. If I _______ you, I would give it to charity.A．will have, am B．would have, was C．had, were D．have, is【答案】C【解析】考察虛擬語(yǔ)氣。第一空，虛擬語(yǔ)氣，與現(xiàn)在相反，用過(guò)去時(shí)。第二空，虛擬語(yǔ)氣，與現(xiàn)在相反，用過(guò)去時(shí)，be動(dòng)詞用were。故選C21．I don’t understand how you got a ticket. I always you a careful driver.A．think。 are B．a(chǎn)m thinking。 areC．thought。 were D．think。 were【答案】C【解析】【詳解】句意：我不明白你是怎么得到罰單的。我一直以為你是一個(gè)謹(jǐn)慎的司機(jī)?？疾閯?dòng)詞時(shí)態(tài)辨析題。本句是虛擬語(yǔ)氣，與過(guò)去事實(shí)相反，需用一般過(guò)去時(shí)；根據(jù)句意結(jié)構(gòu)，可知選C。22．You should_______ watched TV. There is so much work to do,A．not have B．have not C．not D．not having【答案】A【解析】句意“你本不應(yīng)該看足球比賽，你有許多的工作要做”。本題考查虛擬語(yǔ)氣，shouldn39。t have done本不該做……卻做了。根據(jù)句意，故選A。23．Mr. White _____ at 8:30 for the meeting, but he didn39。t show up.A．should have arrived B．should arriveC．should have had arrived D．should be arriving【答案】A【解析】試題分析：句意：懷特先生本來(lái)應(yīng)該在8：30到會(huì)，但他卻沒(méi)有出現(xiàn)。should have done：本來(lái)應(yīng)該做某事而實(shí)際上沒(méi)做。故選A考點(diǎn)：情態(tài)動(dòng)詞24．If I not so busy ,I with you .A．was , would go B．were , would goC．was , should go D．were , will go【答案】B【解析】句意“如果我不忙，我就跟你去”。本題考查對(duì)將來(lái)的虛擬語(yǔ)氣。即“if+過(guò)去時(shí)，主語(yǔ)+should/would/could/might do”結(jié)構(gòu)。故選B。點(diǎn)睛：虛擬情況從句主句對(duì)現(xiàn)在的虛擬過(guò)去式（be一般用were）should/would/could/might+do對(duì)過(guò)去的虛擬had+過(guò)去分詞should/would/could/might+have done對(duì)將來(lái)的虛擬過(guò)去式（be一般用were）should/would/could/might+doshould+動(dòng)詞原形were+to do25． If I _______ you , I _______ do that .A．was , would B．were 。 wouldn’tC．a(chǎn)m , won’t D．were , won’t【答案】D【解析】試題分析：句意：如果我是你，我不會(huì)那樣做。本句是與現(xiàn)在事實(shí)相反的虛擬條件句，從句謂語(yǔ)用動(dòng)詞用過(guò)去式（be動(dòng)詞一般用were）；主句用should（would,could,might）+ 動(dòng)詞原形。故選D?？键c(diǎn)：虛擬條件句。26． 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，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)。考點(diǎn)：考查虛擬語(yǔ)氣及時(shí)態(tài)的用法。27．— Come and join us, Betty!— I’m afraid I can’t. I’m too busy now. If I ______ time, I would certainly go.A．have B．have hadC．will have D．had【答案】D【解析】試題分析：句意：貝蒂，來(lái)加入我們吧！恐怕我不能。我現(xiàn)在太忙。如果我有時(shí)間，我當(dāng)然會(huì)去了。分析：考查if引導(dǎo)的虛擬語(yǔ)氣。表示與過(guò)去事實(shí)相反的虛擬條件句。其句子結(jié)構(gòu)為：從句：If + 主語(yǔ)+ had +過(guò)去完成式動(dòng)詞+ ……主句：主語(yǔ)+ would （should, could, might） + have +過(guò)去完成式動(dòng)詞+……故選 D考點(diǎn)：考查虛擬語(yǔ)氣的用法。28．—Swimming in the river for teenagers is very dangerous.—So it is. If I ________ them, I ________ a shower at home.A．a(chǎn)m。 would take B．were。 will takeC．was。 would take D．were。 would take【答案】D【解析】試題分析：—在河里游泳對(duì)青少年是非常危險(xiǎn)的?！拇_如此。如果我是他們，我會(huì)在家洗澡。if從句表假設(shè)，與現(xiàn)在事實(shí)相反，be動(dòng)詞則用were ，無(wú)論第幾人稱做主語(yǔ)。主句常用would 跟動(dòng)詞原形。故選D。考點(diǎn)：考查固定句式的用法。29．If I a bird, I _ fly in the blue sky.A．was。 would B．a(chǎn)m。 will C．will be。 will D．were。 would【答案】D【解析】