编辑:sx_chenj
2014-04-15
高中英语虚拟语气知识点
类 别 |
用 法 |
例 句 |
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If引导的条件从句 |
高中英语虚拟语气与现在事实相反 |
从句动词:过去式(be用were)主句动词:should/would/could/might+do |
If he were here, he would help us. |
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与过去事实相反 |
从句动词:had+done |
If I had been free,I would have visited you. |
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与将来事实相反 |
从句动词:过去式/should+动词原形/were+to do主句动词:should/would/could/might+动词原形 |
If it should rain tomorrow, we would not go camping. |
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省略if的虚拟条件句 |
将虚拟条件从句中的were,had,should放到主语之前,构成主谓倒装 |
①Should he come ,tell him to ring me up. ②Were I you,I would not do it. ③Had I been free,I would have visited you. |
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混合虚拟条件句 |
不同时间的虚拟:各遵守各的规则 |
①If he had listened to me, he would not be in trouble now. ②If he had told me yesterday,I should know what to do now. ③If I were you, I would have gone to her birthday party. |
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虚拟与陈述的混合:各遵守各的规则 |
①He could have passed the exam,but he wasn’t careful enough. ②You should have come earlier.The bus left a moment ago. |
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含蓄虚拟条件句 |
but for+名词表示虚拟条件 |
句子或主句中的谓语动词的形式视具体情况而定。这是考查考生应变能力的最佳试题。 |
---But for your timely warning,we ______ into great trouble. ---You know we’re friends. A. would get B. must have got C. would have got D. can’t have got |
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without+名词表示虚拟条件 |
Without the air to hold some of the sun's heat, the earth at night would be freezing cold. |
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动词不定式表示虚拟条件 |
It would be only partly right to follow in this way. |
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现在分词表示虚拟条件 |
Having known in time ,we might have prevented the accident.要是及时得知的话,我们也许能阻止这场事故。 |
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过去分词表示虚拟条件 |
Given more attention, the tree could have grown better. |
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副词otherwise表示虚拟条件 |
I was too busy at that time.Otherwise,I would have called you.我当时太忙,否则我就给你打电话了。 |
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连词but连接的句子表示虚拟条件 |
He _____fatter but he eats too little . A. would become B. would have become C. must become D. must have become |
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其它状语从句 |
as if/as though引导的状语从句中动词用did或had+done或would/could/might+do。 注意:as if/as though引导的状语从句中也可以用陈述语气: 当说话者认为所述的是真实的或极有可能发生或存在的事实时: It sounds as if it is raining.听起来像是在下雨。 |
①与现在事实相反 He talks as if he knew where she was. ②与过去事实相反 He talks about Rome as if he had been there before. ③与将来事实相反 He opened his mouth as if he would say something. |
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in order that/so that引导的状语从句中动词用can/could/may/ might/ would等+do |
Turn on the light so that we can see it clearly. |
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宾语从句 |
demand, suggest, order, insist后接的从句中动词为should+do |
He suggested that we not change our mind. |
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wish后的从句中分别用过去式,过去完成式和should/would+do表示与现在,过去和将来情况相反 |
I wish I could be a pop singer. I wish I would have gone to Shanghai last month. |
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主语从句 |
在It is necessary / important / strange that… It is suggested / demanded/ ordered / requested that…等从句中, 谓语动词用should+do |
It is strange that such a person should be our friends. |
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其它句型中 |
It is time that…句型中动词用过去式或should+do |
It’s high time that we left/should leave. |
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would rather所接的从句中动词用过去式或者过去完成式 |
I would rather you stayed at home now. |
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If only句型中动词常用过去式或者过去完成式,表示强烈的愿望 |
If only our dream had come true! |
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