省略在虚拟条件句中的应用，在非真实条件句中虚拟语气

知识点1:省略在虚拟条件句中的应用

三、省略“it+be”
If necessary, I would send more farm-hands to help you. 如果需要的话我会派更多的民工去你。

四、省略整个条件从句
这样的省略通常需要借助一定的上下文，即省略条件从句后，所剩下的主句的意思在一定的上下文中意思是清楚的。如：
I might see her personally. It would be better. 我可以亲自去看她，这样好一些。(=…If I saw her personally, it would be better.)


知识点2:错综时间虚拟条件句

在高中，一些学生在学习虚拟语气时，不清楚什么是错综时间虚拟条件句，今天我给大家简单说明一下：
当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时，被称为“错综时间条件句”，动词的形式要根据它所表示的时间作出相应的调整。如：[1]从句,动词,相关知识点

在“动词+宾语+宾补”结构中,如果宾语是不定式、动名词、宾语从句,则常用it做形式宾语,而将实际的宾语移到补语后面去。如：I found the job rather difficult. (我发觉这个工作相当难做。)I found it rather difficult to do the job.查看详情>>

If you had followed my advice last month, you would be better now.
If I were you, I would have taken his advice.（从句表示现在时间，主句表示过去时间）[2]would,have,相关知识点

If I had V-ed, I would have ... 句型结构分析语法讲解：句子成分、什么句型句法，怎么用什么意思 I might have been incredulous had I not been accustomed to such responses. 若非我已经习惯了这样的回答，我可能不敢轻易相信。 Had he not apolo查看详情>>

If you had listened to me, you might not be in such trouble now.（从句表示过去时间，主句表示现在时间）
If it hadn't been raining those days, we should be going on with the second stage of the works.（从句表示过去进行时间，主句表示现在进行时间）

知识点3:在非真实条件句中虚拟语气

虚拟语气用于非真实条件句中有下列几种情形：
1. 表示与现在事实相反的虚拟语气，非真实条件句中的谓语动词用“过去式(be动词一般用were)”，而主句的谓语动词用“would / should / could / might + 动词原形”。如：[3]should,could,相关知识点

常见的情态动词有：can (could) ,may (might), must ,shall (should), will (would), dare (dared) , need等,另外,have to、had better也当作情态动词使用。情态动词后面必须加动词的原形。 查看详情>>

①If I were you I would stay here. 如果我是你，我就呆在这儿。
②We would go with you if we had time. 如果我们有时间，会和你一起去的。[4]go with,would,相关知识点

like作为"喜欢"讲时，可以接动名词也可以接不定式，但接动名词时多表达一种习惯性动作。而接不定式则侧重于表达一次性、特殊性的动作。 但要注意的是like 与would连用时则一定要接不定式，如：Would you like to go with me? 再有一点要注意的是，like作为介词"像"讲时，只能用分词作其宾语。 ［误］ I like to swim very muc查看详情>>

2. 表示与过去事实相反的虚拟语气，非真实条件句中的谓语动词用“过去完成时”，而主句的谓语动词用“would / should / could / might + have + 过去分词”。如：[5]should,could,might,相关知识点

表推测的 can / may / could / might / should / must表推测的 can / may / could / might / should / must1. 从所用句型来看can用于否定句和疑问句，may用于肯定句和否定式，两者均可用于否定句，但是含义不同(cannot=不可能，may not=可能不)；could, might 和 should查看详情>>

①If he had come here yesterday, I should have told him about it. 如果他昨天到这里来，我早就告诉他这件事了。[6]should,have,相关知识点

should + have + 过去分词如果是否定式，则表示本来不该发生的情况却发生了。如：You shouldn’t have opened her letter. 你是不应该拆她的信的。She shouldn’t have stood in a queue. She should have got tickets from the machine. 她本来就不该去排队，她应查看详情>>

②If I had seen you yesterday, I would have asked you about it. 如果我昨天看到你，我就会问你这件事。[7]would,have,相关知识点

would have V-ed ... 句型结构分析语法讲解：句子成分、什么句型句法，怎么用什么意思 She would have married him, but when she learned that he was a rascal, she parted with him. 她本来会嫁给他的，但知道他是个流氓后，她就离开他了。查看详情>>