for等。
But for your help, we couldn't have succeeded. 要不是你的帮助，我们是不会成功的。
Without electricity life would be quite different today. 如果没有电，今天的生活就会完全不同。 [考题印证]
(2013·安徽改编)I ________(go) to my cousin's birthday party last night, but I was not available.
解析：本题考查虚拟语气。句意：昨天晚上我本来要去我表弟的生日晚会，但是我没空。would do表示对将来或现在的假设；would have done表示对过去事情的假设，意思是“本来会做”。but后面是实际情况，而前面则是虚拟语气。
答案：would have gone
[来源:www.shulihua.net]
考点二 虚拟语气用于名词性从句中 1．用于宾语从句中。
(1)wish后面所跟宾语从句中的虚拟语气。
表示对现在情况的虚拟：wish＋主语＋动词过去式或were 表示对过去情况的虚拟：wish＋主语＋had＋过去分词
[来源:www.shulihua.net]
表示对将来情况的虚拟：wish＋主语＋would/could＋动词原形 I wish (that) I were a bird and could fly freely in the sky. 我希望我是只小鸟能在天空自由飞翔。 How I wish I had listened to my parents' advice! 我多么希望听了父母的建议！ How I wish it weren't raining now. 我多希望现在没下雨啊。
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[考题印证]
(2012·北京西城期末改编)—Let's play football together tomorrow afternoon.
—OK, but how I wish I________(play) it as skillfully as you. 解析：wish后的宾语从句要用虚拟语气。根据句意可知此处表示与现在的事实不符的一种愿望，因此从句用一般过去时态。
答案：had played
(2)用于表示建议、愿望、命令等词后的宾语从句中，常见的动词有：demand，order，require，insist，suggest，propose，advise等。宾语从句中的虚拟语气结构为“should＋动词原形”，should可以省略。
He suggested that we (should) start off early the next day. 他建议我们第二天早点出发。 [考题印证]
(2013·浙江改编)Eye doctors recommend that a child's first eye exam ________(be) at the age of six months old.
解析：本题考查虚拟语气在名词性从句中的运用。句意：眼科医生建议孩子的第一次视力检查应该在六个月大的时候。recommend推荐，建议；后接从句，从句用虚拟语气，谓语动词用should do，should可以省略。
答案：(should) be
(3)在would rather后的宾语从句中，也用虚拟语气，其结构为：
??过去时?与现在事实相反?would rather sb.＋?
??过去完成时?与过去事实相反?
I would rather they didn't hear of the news. 我宁愿他们没听到那个消息。
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I would rather you hadn't told him the news yet. 我宁愿你没把消息告诉他。 [考题印证]
(2012·江西丰、樟、高、宜四市联考改编)Our teacher insisted that the key words worth paying attention to ________(underline) before class.
解析：分析句子结构可知，worth paying attention to作the key words的后置定语；insist表示“坚持主张”时，其宾语从句使用虚拟语气，谓语动词使用should do，should可以省略，因此该从句谓语为(should) be underlined。
答案：(should) be underlined 2．用于主语从句中。 It
is
desired/suggested/proposed/recommended/necessary/important/strange/natural/a pity/essential＋that从句，从句中的谓语动词用“should＋动词原形”，should可以省略。
It is suggested that the meeting (should) be put off till next week. 人们建议会议推迟到下周。
It is strange that he (should) have acted toward his parents like that.(act在主句谓语动词be之前发生，所以要用“should have acted”)真奇怪他竟然那样对他父母。
[考题印证]
(2013·青岛一模)It's strongly suggested that measures ________(take) to forbid students to cheat in the exams.
解析：句意：强烈建议采取措施来禁止学生在考试中作弊。在“It is＋过去分词＋that从句”结构中，that从句要用虚拟语气，谓语动词
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用“(should＋)动词原形”。
答案：(should) be taken
3．用于表语从句和同位语从句中。
在suggestion，proposal，order，plan，idea，request，advice等名词后的表语从句和同位语从句中要用虚拟语气，其构成是“should＋动词原形”，should可以省略。
My idea is that we (should) think it over before accepting it. 我的意见是在接受之前要反复考虑。
We all agreed to his suggestion that we (should) go to Dalian for sightseeing.
我们都同意他让我们去大连旅游的建议。 考点三 特殊句型中的虚拟语气
1．it is (high/about) time (that)．..句型中的虚拟语气。
在句型“it is (high/about) time (that)．..”后面也可跟虚拟语气，从句中常用过去式。有时也用“should＋动词原形”，意为“该是??的时候了”。
It is time (that) we went home. 我们该回家了。 [考题印证]
(2012·浙江六校联盟第一次联考)It's high time that we ________(devote) ourselves to environmental protection and ecological improvement.
解析：句意：是我们致力于环境保护和生态改善的时候了。在It's (high/about) time that...结构中应使用虚拟语气，后的谓语动词可用一般过去时。
答案：devoted
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