if的虚拟语气:If引导的虚拟语气

1.If引导的虚拟语气

1. 当if后面接一般现在时的动词时,表示对将来的一种推测. if sb do sth sb will/you shall be rewarded. 2. 当if后面接一般过去时的动词时,则是一种虚拟语气. if sb did sth sb would/t have suffered such a failure. 3. 当if后面接什么时态都可以时，句子为宾语从句. sb do sth if sb do sth. He said if rain was stop. 由if引导的条件状语从句，时态应该是主将从现，就是说主句用一般将来时。

2.if 条件句和虚拟语气

if引导的条件句中的虚拟语气：1、if引导的条件状语从句可以分为两类：真实条件句（Sentences of Real Condition）和虚拟条件句，凡是假设的情况发生性可能很大,就是真实条件句，当假设是不大可能实现时，就是虚拟条件句。2、表示与现在事实相反的情况.其句子结构为：if + 主语+ 动词的过去式(be 用were) + ……主句：might) + 动词原形+ ……3、表示与过去事实相反的虚拟条件句.其句子结构为：If + 主语+ had +过去完成式动词+ ……主句：might) + have +过去完成式动词+……4、表示与将来事实相反的虚拟条件句 (对将来的事实实现的可能性不大).其句子结构为：If + 主语+ should (或were) + 动词原形+……主句：might) + 动词原形+……拓展资料if的用法1、She gets very upset if I exclude her from anything .要是有什么事情我不让她参加，她会非常难过。and I said no .他问我是否和你一块儿离开的，我说不是。3、Sometimes,to achieve .有时即便有可能达到那个标准，那也是非常困难。4、If I could just make another small point about the weightlifters in the Olympics .请允许我就有关奥运会举重运动员的问题再补充一点。5、I wonder if you'请问您能不能给我们提供一些信息？6、If there was any disappointment it was probably temporary .即便有点儿失望，也肯定是暂时的。then at least the possibility of some drug which could stop the spread of the virus .近来的一些进展即使不能提供治愈的希望。

3.虚拟语气if的三种用法

1、表示与现在事实相反的情况：If+主语+动词一般过去时(Be动词用were)。主语+ should/would/might/could+do。2、表示与过去事实相反的情况：If+主语+had+done。3、表示与将来事实相反：①if+主语+were to do。②if+主语+should+do。③if+主语+动词一般过去式（be动词用were）。主句：主语+should/would/might/could+do。扩展资料虚拟语气通过谓语动词的特殊形式来表示。英语中的语气分为陈述语气、祈使语气、虚拟语气、疑问语气和感叹语气五类。

4.IF虚拟语气的三种时态是什么？

if虚拟语气。

5.英语IF虚拟语气的用法

if虚拟语气，if条件句虚拟语气用法，不会的来学学吧

6.if引导的虚拟语气应该用什么时态

1. 表示与现在事实相反的情况，if+ 主语 + 动词的过去式（ be 动词用 were ），we would go to Shanghai. 如果天气好,我们就去上海，（事实上天气不好） If they had time。might go with me. 如果他们有时间;他们就会（可能）和我一起去，2. 表示与过去事实相反的情况。其句型为。if + 主语 + 动词的过去完成式“might + have + 动词的过去分词;I shouldn'：t /couldn't have made such a mistake. 如果我按照他的建议去做;我一定不会（不可能）犯这样的错误;3. 表示与将来事实可能相反的假设和结果，其句型为。were to +动词原形;如;The glass would break if you dropped it. 杯子摔下来会打破的”（事实上没有摔下来） If it should rain。could /。might be saved. 假如天下雨,

7.if在虚拟语气中三种用法的公式是什么？

虚拟语气是一种特殊的动词形式！用来表示说话人所说的话并不是事实，判断是真实条件句还是非真实条件句。只有在非真实条件句中才使用虚拟语气。通过句子意思。看假设的条件是否能够实现，能够实现是真实条件句，不能使用虚拟语气，假设的条件不能实现则是非真实条件句；要用虚拟语气.判断这个假设是与哪个事实相反，①与过去事实相反：②与现在事实相反。③与将来事实可能相反。最基本的虚拟语气句型:1. 虚拟现在时表示与现在事实相反的假设:其if 从句的谓语形式用动词的过去式(be 一般用were)，主句用would/，2. 虚拟过去时是表示与过去事实相反的假设。if 从句的谓语形式用过去完成时即had＋过去分词，could /might + have +过去分词;he would have telephoned you.3. 虚拟将来时是表示对将来实现的可能性很小的或不确定的假设,If从句的谓语形式用一般过去式或用were to /。主句用would /，could/might +动词原形;he would get there by Friday4. 省略if 采用倒装语序的条件句,有时可以把含有助动词、情态动词、be或have的虚拟条件句中的连词if省去。were 等词提到主语之前,I wouldn’t do that.==>,I wouldn’t do that.5. 有时虚拟条件句并没用if 从句表示出来,而是用介词短语(otherwise，but for)、上下文或其它方式来表示,We didn'：otherwise we would have telephoned him. Without you help;虚拟语气在从句中用should的情况:想法的动词后的从句里,agree,command,decide,demand,determine,grant,indicate,request,suggest,urge,vote.常考到的是,suggest:advise,demand,require,propose,order,decision,command,decree,demand,order,preference,request,was +形容词后的that 从句中用should的结构,should 可以省略. 这类形容词常见的有:anxious,essential,impossible,important,natural,necessary,possible,recommended,urgent,in case(以防)从句中用should,should 可以省略.She walked quietly lest she (should) wake up her roommates.Have your gun ready in case we should need it.III:wish 后的 that 从句中:1. 表示现在或将来的愿望,从句中过去式.I wish I knew his address.I wish I were young.2. 表示过去没有实现或不可能实现的愿望,从句用过去完成式或would,but I had to get up and come to class.3. 如果将wish改成wished,其后that 从句中动词的形式不变.4. 如果that 从句中用would,一般表示 对现状不满或希望未来有所改变或请求I wish he would answer my letter.I wish prices would come down.I wish you would help me.I wish you would stop asking silly questions.IV:high/first(second,用过去式.表示“would just as soon 后的that从句中,用过去式或过去完成式,I would rather he came tomorrow than today.John would rather that she had not gone to the party yesterday evening.VI:谓语动词与wish宾语从句的虚拟形式相同.If only he didn’t drive so fast!(现在)If only she had asked someone’s advice.(过去)If only the rain would stop.(将来)VII:在as if /过去想象中的动作或情况,用过去完成式.He speaks as if he were on the spot.She spoke to me as if I were deaf.This device operated as though it had been repaired.注:如果有可能成为事实,用陈述语气.He looks as if he is going to be ill.2. 在 insist 后的从句中,用陈述语气,坚持别人做什么事情,