【文章內(nèi)容簡介】 考點：if引導的虛擬條件句。點評：在英文中條件句有兩種，一種是真實的條件句，if后遇到將來時用一般現(xiàn)在時，一種是虛擬的條件句，if后用過去時，be用were，在英文的實際使用中應該注意它們的區(qū)別。20．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。21．The workers insisted that they a free lunch every noon and the boss hadto do that.A．be given B．being given C．will be to give D．were given【答案】A【解析】句意：工人們堅持要求他們每天中午都有免費的午餐，老板必須這樣做。考查虛擬語氣。insist堅持，要求，其后面的賓語從句要用虛擬語氣，跟虛擬式動詞原形 或者“should + 動詞原形” 。結合句意和語境可知選A。 22．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23． Come and join us, Jim! I’m sorry I can’t . If I _______ time, I would certainly go.A．will have B．have had C．had D．had had 【答案】C【解析】試題分析：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。（1）、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” （2）、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”（3）、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”：句意：吉姆，來加入我們吧！抱歉，我不能。如果我有時間，我肯定會去的。結合語境可知下文中表示與現(xiàn)在相反的事實，故條件狀語從句中用一般故去時態(tài)，選C?？键c：考查虛擬語氣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． What if I have to go there and know nothing about it? If I______ you, I would try to find some information about it on the Internet.A．a(chǎn)m B．was C．will be D．were【答案】D【解析】試題分析：句意：——倘若我必須去那兒而且對那里一無所知，該怎么辦？——如果我是你，我會在網(wǎng)上查找一些有關那里的信息。根據(jù) I would try to find可知主句用的是would+do,可知這是對現(xiàn)在事實的假設的虛擬語氣，因此If引導的條件狀語從句用一般過去時，根據(jù)虛擬語氣的用法be動詞在If引導虛擬語氣中用were .故選 D?？键c：考查虛擬語氣的用法。26．If I you, I invite him to go to see a movie.A．a(chǎn)m, would B．were, willC．were, would D．was, will【答案】C【解析】試題分析：句意：句意：如果我是你，我會邀請他去看電影。go to see a movie去看電影；invite sb to do邀請某人做某事；在表達與現(xiàn)在事實相反的虛擬語氣中，Be用were,主句用would。所以選C?？键c：考查虛擬語氣。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，從句中應使用一般過去時；根據(jù)traffic accident，應及時報警。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。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：虛擬語氣。解題思路：根據(jù)句意:如果你有一百萬你將會干什么？ “如果你有一百萬”是對現(xiàn)在的一種假設，與現(xiàn)在的事實相反。表示與現(xiàn)在事實相反的虛擬語氣的結構是：主句用should/would/could/might+動詞原形，從句用一般過去時態(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