【文章內(nèi)容簡(jiǎn)介】 the moon, I ______ bring something unusual back to the earth.A．couldB．willC．wouldD．shall【答案】C【解析】試題分析：此題考查if引導(dǎo)的條件狀語從句的相關(guān)知識(shí)。根據(jù)語境可知此句的含義是如果我去月球，我會(huì)帶回一些不同尋常的東西。這個(gè)假設(shè)成立的幾率很小，故看為虛擬語氣。根據(jù)語法知識(shí)可知從句要用一般過去時(shí)，主句要用過去將來時(shí)，過去將來時(shí)的基本構(gòu)成would+動(dòng)詞原形，故選C?？键c(diǎn)：if引導(dǎo)的條件狀語從句點(diǎn)評(píng)：if既可以引導(dǎo)賓語從句又可以引導(dǎo)狀語從句。if充當(dāng)賓語從句的連接詞時(shí)，相當(dāng)于whether，詞義為“是否”，遵循賓語從句的時(shí)態(tài)規(guī)則，可根據(jù)語境選擇任何時(shí)態(tài)；充當(dāng)從屬連詞，引導(dǎo)條件狀語從句時(shí)，詞義為“如果”，若主句中的謂語動(dòng)詞用一般將來時(shí)，則從句中的謂語動(dòng)詞通常用一般現(xiàn)在時(shí)表示將來。22． 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C23．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(yīng)該在8：30到會(huì)，但他卻沒有出現(xiàn)。should have done：本來應(yīng)該做某事而實(shí)際上沒做。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)將來的虛擬語氣。即“if+過去時(shí)，主語+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)在的虛擬過去式（be一般用were）should/would/could/might+do對(duì)過去的虛擬had+過去分詞should/would/could/might+have done對(duì)將來的虛擬過去式（be一般用were）should/would/could/might+doshould+動(dòng)詞原形were+to do25．Luckily, he wasn’t driving fast at the time of accident。 otherwise, I am sure, it _______ a more serious accident.A．would be B．were C．would have been D．had been【答案】C【解析】【詳解】句意：幸運(yùn)的是，事故發(fā)生時(shí)他沒有開快車；否則，我相信，這將是一個(gè)更嚴(yán)重的事故?？疾樘摂M語氣。根據(jù)“wasn’t driving”是過去進(jìn)行時(shí)，所以此處是對(duì)過去的虛擬，主句時(shí)態(tài)應(yīng)用情態(tài)動(dòng)詞+have done，故選C。26．—Mum, can I go shopping with Gina?—Well, If I were you, I homework first. A．will do B．have to finish C．must finish D．would do【答案】D【解析】試題分析：句意：媽媽，我能和吉娜去購物嗎？——哦，如果我是你，我會(huì)首先完成作業(yè)。結(jié)合語境可知主句表示的是對(duì)現(xiàn)在的虛擬，故用過去將來時(shí)態(tài)，選D。考點(diǎn)：虛擬語氣點(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”：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．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。29．—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 ，無論第幾人稱做主語。主句常用would 跟動(dòng)詞原形。故選D?？键c(diǎn)：考查固定句式的用