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句謂語用“should (would, could, might)+have+過去分詞”與將來事實(shí)相反 若與將來事實(shí)相反,條件從句的謂語用過去式(be通常用were),主句謂語用“should (would, could, might)+動(dòng)詞原形”:21. If I ____Alice, I _____them the truth.A. was , would tell B. were ,would tell C. am, will tell D.is , will tell【答案】B【解析】試題分析:本題的含義是如果我是你,我將告訴他們真相,本題if引導(dǎo)的是一個(gè)虛擬的條件句,在虛擬句中,be用were,主句通常用過去的一種,will應(yīng)該用would,故本題選B??键c(diǎn):if引導(dǎo)的虛擬條件句。點(diǎn)評(píng):在英文中條件句有兩種,一種是真實(shí)的條件句,if后遇到將來時(shí)用一般現(xiàn)在時(shí),一種是虛擬的條件句,if后用過去時(shí),be用were,在英文的實(shí)際使用中應(yīng)該注意它們的區(qū)別。22.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:如果你贏了一百萬美元,你要做什么?——我會(huì)把它捐給慈善機(jī)構(gòu)。結(jié)合語境可知條件從句中描述的是與將來相反的事實(shí),故用一般過去時(shí)態(tài),選B??键c(diǎn):if引導(dǎo)的條件狀語從句點(diǎn)評(píng):虛擬語氣是一種特殊的動(dòng)詞形式,用來表示說話人所說的話并不是事實(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氣。通過句子意思,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,條件從句的謂語用過去式(be通常用were),主句謂語用“should (would, could, might)+動(dòng)詞原形” 與過去事實(shí)相反 若與過去事實(shí)相反,條件從句的謂語用過去完成時(shí)(had+過去分詞),主句謂語用“should (would, could, might)+have+過去分詞”與將來事實(shí)相反 若與將來事實(shí)相反,條件從句的謂語用過去式(be通常用were),主句謂語用“should (would, could, might)+動(dòng)詞原形”:23. 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】考察虛擬語氣。第一空,虛擬語氣,與現(xiàn)在相反,用過去時(shí)。第二空,虛擬語氣,與現(xiàn)在相反,用過去時(shí),be動(dòng)詞用were。故選C24.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”。本題考查虛擬語氣,shouldn39。t have done本不該做……卻做了。根據(jù)句意,故選A。25.If I were invited to the party,I _______ a red skirt.A. will wear B. wear C. would wear【答案】C【解析】試題分析:如果我被邀請(qǐng)參加聚會(huì),我會(huì)穿紅色的裙子。此處考查虛擬語氣。句中,主句和從句的謂語都要用虛擬語氣,與現(xiàn)在事實(shí)相反的假設(shè),從句(條件句)動(dòng)詞過去式( be一般用were)。主句(結(jié)果句) should /would/ could/ might +動(dòng)詞原形。故答案為C??键c(diǎn):考查虛擬語氣。 26.The headmaster with his students Hangzhou Paradise Park if it tomorrow.A.is going to。 isn’t rainy B.a(chǎn)re going to。 isn’t rainyC.is going to。 won’t rain D.a(chǎn)re going to。 doesn’t rain【答案】A【解析】考查主謂一致和if從句。with連接幾個(gè)主語時(shí),與第一個(gè)保持一致。排除B、D;if條件句用一般現(xiàn)在時(shí)代替將來時(shí),排除C。句意“如果不下雨,班主任和同學(xué)明天將要去杭州天堂公園。”故選A。27.What would you do if you _____ the traffic accident?I would ______.A.see,do my housework first B.saw。buy some fruit right awayC.see。call at 110 at once D.saw。call the police right away【答案】D【解析】考查虛擬語氣和情境交際的用法。問句使用了虛擬語氣,從句中應(yīng)使用一般過去時(shí);根據(jù)traffic accident,應(yīng)及時(shí)報(bào)警。28.— 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)的虛擬語氣。表示與過去事實(shí)相反的虛擬條件句。其句子結(jié)構(gòu)為:從句:If + 主語+ had +過去完成式動(dòng)詞+ ……主句:主語+ would (should, could, might) + have +過去完成式動(dòng)詞+……故選 D考點(diǎn):考查虛擬語氣的用法。29.What_____you do if you had a million dollars ? A.would B.will C.did D.do【答案】A【解析】考查點(diǎn):虛擬語氣。解題思路:根據(jù)句意:如果你有一百萬你將會(huì)干什么? “如果你有一百萬”是對(duì)現(xiàn)在的一種假設(shè),與現(xiàn)在的事實(shí)相反。表示與現(xiàn)在事實(shí)相反的虛擬語氣的結(jié)構(gòu)是:主句用should/would/could/might+動(dòng)詞原形,從句用一般過去時(shí)態(tài)。故選A。30.—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