【文章內(nèi)容簡介】 （had+過去分詞），主句謂語用“should （would, could, might）+have+過去分詞”與將來事實相反 若與將來事實相反，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：如果你贏了一百萬美元，你要做什么？——我會把它捐給慈善機構。結合語境可知條件從句中描述的是與將來相反的事實，故用一般過去時態(tài)，選B?？键c：if引導的條件狀語從句點評：虛擬語氣是一種特殊的動詞形式，用來表示說話人所說的話并不是事實，而是一種假設、愿望、懷疑或推測。判斷是真實條件句還是非真實條件句。只有在非真實條件句中才使用虛擬語氣。通過句子意思，看假設的條件是否能夠?qū)崿F(xiàn)，能夠?qū)崿F(xiàn)是真實條件句，不能使用虛擬語氣；假設的條件不能實現(xiàn)則是非真實條件句。與現(xiàn)在事實相反 若與現(xiàn)在事實相反，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）+動詞原形” 與過去事實相反 若與過去事實相反，條件從句的謂語用過去完成時（had+過去分詞），主句謂語用“should （would, could, might）+have+過去分詞”與將來事實相反 若與將來事實相反，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】考察虛擬語氣。第一空，虛擬語氣，與現(xiàn)在相反，用過去時。第二空，虛擬語氣，與現(xiàn)在相反，用過去時，be動詞用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謹慎的司機?？疾閯釉~時態(tài)辨析題。本句是虛擬語氣，與過去事實相反，需用一般過去時；根據(jù)句意結構，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。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：懷特先生本來應該在8：30到會，但他卻沒有出現(xiàn)。should have done：本來應該做某事而實際上沒做。故選A考點：情態(tài)動詞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”。本題考查對將來的虛擬語氣。即“if+過去時，主語+should/would/could/might do”結構。故選B。點睛：虛擬情況從句主句對現(xiàn)在的虛擬過去式（be一般用were）should/would/could/might+do對過去的虛擬had+過去分詞should/would/could/might+have done對將來的虛擬過去式（be一般用were）should/would/could/might+doshould+動詞原形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，我不會那樣做。本句是與現(xiàn)在事實相反的虛擬條件句，從句謂語用動詞用過去式（be動詞一般用were）；主句用should（would,could,might）+ 動詞原形。故選D?？键c：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，我肯定會幫助你的，但是我太忙了。對過去的虛擬If+主語+had +動詞過去分詞,主語+would / should / might / could have + 動詞過去分詞。所以描述的是過去的事情，故我過去很忙應該用過去時?？键c：考查虛擬語氣及時態(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，來加入我們吧！恐怕我不能。我現(xiàn)在太忙。如果我有時間，我當然會去了。分析：考查if引導的虛擬語氣。表示與過去事實相反的虛擬條件句。其句子結構為：從句：If + 主語+ had +過去完成式動詞+ ……主句：主語+ would （should, could, might） + have +過去完成式動詞+……故選 D考點：考查虛擬語氣的用法。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：—在河里游泳對青少年是非常危險的?！拇_如此。如果我是他們，我會在家洗澡。if從句表假設，與現(xiàn)在事實相反，be動詞則用were ，無論第幾人稱做主語。主句常用would 跟動詞原形。故選D?？键c：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】