if虚拟语气 if虚拟语气的基本结构

as if虚拟语气用法例句

She always talks to me as if she was my sister.

as if 从句的用法：

if虚拟语气 if虚拟语气的基本结构

if虚拟语气 if虚拟语气的基本结构

+he

1．表语从句，常与as,look, seem,feel,taste,ell,sound等系动词连用。

她看起来好像年轻了十岁。

It seems as if our team is going to win．

看来我们队要胜了。

2. 方式状语从句，表示“事情是怎么做的”或“一个人或事物是什么样的”。

She loves the boy as if she were his mother．

她爱这男孩，就好像她是他的妈妈一样。

The child talked to us as if he were a grown-up．

那孩子跟我们谈起话来，像个成年人似的。

as if 还可用于省略句中：

He acts as if （he were） a fool．

他做事像个傻子。

汤姆举起手好像要说什么。

as if 从句的语气及时态：

1． as if 从句用陈述语气的情况。当说话者认为句子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。

He talks as if he ifis drunk．

从他谈话的样子来看他是醉了。

2. as if 从句用虚拟语气的情况。当说话人认为句子所述的是不真实的或极少有可能发生或存在的情况时。从句虚拟语气动词时态的形式如下：

You look as if you didn’ t care．

你看上去好像并不在乎。

He talks as if he knew where she was．

他说话的样子，好像他知道她在哪里似的。

（2）从句表示与过去事实相反，谓语动词用“had+过去分词”。

The girl listened as if she had been turned to stone．

那女孩倾听着，一动也不动，像已经变成了石头似的。

as if 固定搭配：

1.从句表示与将来事实相反，谓语动词用“would/could/might+动词原形”。

He opened his mouth as if he would say soming．

他张开嘴好像要说什么。

看来好像要下雪了。

2.as if 后面可以接陈述语气和虚拟语气，如果句子的情况是真实的，那么只要保持时态一致即可，如果后面接的并非真实情况，则要按照虚拟语气规则把句子形式改变（简单说就是时态倒退原则）。

4.谈论过去情形的动词形式,过去式，表示过去的状态.

He looked at me as if I were mad.

他那样看我，好像我是个疯子。

He stood there looking at the train and laughing, as if to miss a train was the best joke in the world.

他站在那里，望着火车哈哈大笑，好像误了火车是天底下最开心的事儿似的。

怎样区分IF的是条件状语从句还是虚拟语气

He talks as if he is drunk． 从他谈话的样子来看他是醉了。

1.看句意。与现实相taken反或不太可能实现的事，是虚拟语气。

3.看结构.IF的是条件状语从句常见结构：从现主将（从句是现在时，主句是将来时）

PS：如果觉得语法有困难，my买本《张道真语法书》看看（山东地图出版社）

if 是虚拟语气还是状语从句用主将从现，怎么看

Tom raised his hands as if （he was going） to say soming．

一般来说，虚拟语气是指不可能发生的事，或者是发生的可能性很小，可根据前后文判断。if

If

从句doesn't表现在时，用were

或动词过去式，表过去，用had

加动词过去分词形式，表将来，用were

to

加动词原形。条件状语从句一般是用一般现在时，主句用将来时，主句的动作要在从句动作发生后才能发生。看到一般现在时，就当做条件状语从句，其他形式就当做虚拟语气，一般不会错，如果能记下虚拟语气的形式更好。

if 从句和虚拟语气

were to + 动词原形

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.

do

sth

will/shall

do

sth.

go

with

me,

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.

did

sth

would/should

do

sth.

Ididn't

make

that

mistake,

Iwouyould't

he

such

afailure.

3.

当if后面接什么时态都可以时，if为“是否”的意思，句子为宾语从句.

do

sth

do

sth.

He

said

was

stop.

由if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，而从句用一般现在时表示将来。

例如

it

tomorrow,

Iwill

visit

former

school.

这里从句就用一般现在时。

当然if的从句也可以用虚拟语气

例如If

Ig加动词原形，或者用shouldot

up

early

in

morning,

Iwouldn't

miss

train.

英语虚拟语气的语句有哪些?怎么用? 例如if从句的虚拟用法

3. as if 在俚语中能表示反讽，功能类似"like".

时间 从句谓语形式 主句谓语形式

根据句意确定时态.如你所例句子

将来 动词过去式(be用were)

should + 动词原形

would / should / might / could + 动词原形

现在 动词过去式(be 用 were) would / should / might / could + 动词原形

过去 had +动词过去分词 would / should / might / could he + 动词过去分词

2.条件中的虚拟语气的举例

(1) 将来时的条件句中的虚拟语气.如：

If he should go to Qing Hua University,he would make full use of his time.如果他要上清华大学的话,他就会充分利用他的时间了.

If he were to come here,he would l us about it.如果他要来的话,他会通知我们一声.

(2) 现在时的条件句中的虚拟语气.如：

If he were free,he would us.要是他有空的话,它会帮助我们的.

If he studied at this school,he would know you well.如果他在这所学校学习的话,它会对你很熟悉.

(3) 过去时的条件句中的虚拟语气.如：

If I had got there earlier,I would he met Mr.Li.如果我早点到那儿,我就会会到了李先生.

3.运用条件句中的虚拟语气时,须注意的几个问题

(1) 当从句的主语为第三人称单数时,谓语动词若是系动词be时,可用was代替were.但在倒装虚拟结构及if I were you,as it were中,只能用were.如：

Were I ten years younger,I would study abroad.要是我还年轻十岁的话,我会去国外学习.

If I were you,I would try my best to grasp the chance.要是我是你的话,我要尽力抓住这次机会.

(2) 有时,虚拟条件句中,主、从句的动作若不是同时发生时,须区别对待.

①从句的动作与过去事实相反,而主句的动作与现在或现在正在发生的事实不符.如：

If I had worked hard at school,I would be an engineer,too.如果我在学校学习刻苦的话,我现在也会使工程师了

If they had rmed us,we would not come here now.如果他们通知过我们的话,我们现在就不会来这里了.

②从句的动作与现在事实相反,而主句的动作与过去事实不符.如：

If he were free today,we would he sent him to Beijing.如果他今天有空的话,我们会已经派他去了.

If he knew her,he would he greeted her.要是他认识她的话,他肯定会去问候她了.

③从句的动作与过去发生的情况相反,而主句的动作与现在正在发生的情从句中提出一种与客观现实不相符或根本不可能存在的条件,主句会产生的一种不可能获得的结果.条件句中的虚拟语气根据不同的时间有三种不同的形式.况相反.如：

If it had not been raining too much,the crops would be growing much better.如果天不下太多的雨的话,会长得更好.

If he had been working hard,he would be working in the off now.要是他工作一直努力的话,他现在已进了办公室了.

(3) 当虚拟条件句的谓语动词含有were,should,had时,if可省略,而将were,should,had等词置于句首.如：

Should he agree to go there,we would send him there.要是他答应去的话,我们就派他去.

Were she here,she would agree with us.如果她在这儿的话,她会同意我们的.

Had he learnt about comrs,we would he hired him to work here.如果她懂一些电脑知识的话,我们会已经聘用他来这里工作了.

(4) 有时,句子没有直接给出设情况的条件,而须通过上下文或其他方式来判断.如：

But for his ,we would be working now.要不是他的帮助,我们还会在工作呢.

Without your instruction,I would not he made such great progress.要是没有你的指导,我不会取得如此大的进步.

(5) 有时,虚拟条件句中,主、从句可以省略其中的一个,来表示说话人的一种强烈的感情.

He would he finished it.他本该完成了.

You could he passed this exam.你应该会通过这次考试了.

②省略主句

If I were at home now.要是我现在在家里该多好啊.

If only I had got it.要是我得到它了该多好啊.

if的条件状语从句后面要用虚拟语气吗

If it should rain, the crops would / could / might be sed.

而if的条件状语从句可分为两类：

If the weather were fine, we would go to Shanghai.

ihe

time,i

will

with

this

meeting.例1

2、虚拟条件句

iwere

you,i

wouldShe looks as if she were ten years younger．

he

attended

meeting.例2

一般if的是真实条件句还是非真实条件句通过时态可以直接看出，if的真实条件句的时态一般遵循<主将从现>的规律，看例1，而If的非真实条件句的时态有很多，这可以参考if虚拟语气时的用法了.看例2

虚拟语气一定有if吗

条件句中虚拟语气的形式

不一定，首先，有条件句的虚拟句型，可以省略if，倒装条件句，主句语序不变；其次，还收用过去时态表现在状态和shouwould 是一个常被错误地认为只是表达“过去将来时”的助动词。其实，would 还是一个常用于现在时语境的“情态动词”，即委婉表达“推断”、“建议”的词。此时的 would 并不是“过去时”的概念。因此，if 在这样的句子里要用现在时：ld

+v

的两种虚拟句也It looks as if it might snow．是不需要if的。

if的虚拟语气应该用什么时态？

I would he come to see you,but I was too busy.我本该来看你了,然而我太忙了.

1. 表示与现在事实相反的情况，其句型为“ if+ 主语 + 动词的过去式（ be 动词用 were ），主语 +would / could / might / should + 动词原形”。如：

此问题涉及到"as if" 的两种用法

如果天气好，我们就去上海。（事实上天气不好）

If they had time, they would / could / 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，主语 +would / could / should / might + he + 动词的过去分词”。如：

If I had taken his a, I shouldnsuffered't / wouldn't / couldn't he 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设和结果，其句型为“ if + 主语 + 动词的过去式 / should + 动词原形 / were to +动词原形，主语 +would / could / might / should + 动词原形”。如：

杯子摔下来会打破的。（事实上没有摔下来）

如天下雨，庄稼就一定（有可能）会得救。

if在虚拟语气中三种用法的公式是什么？

Would it be sible if he joined us?（这不是虚拟语气，而是委婉请求！）

三种情况，(1)对过去，从句had done主句would/could/might/he done(2)对现在，从句：did /were主句：would/could/might do(3)对将来，should do/were to do/did.从句，更上一个一样。注意，“主将从现”原则。

（1）如果从句表示与现在事实相反，谓语动词补充问题回答:用一般过去时。

当if 不做虚拟语气时,它不同时态的用法

the

if 用于表达非虚拟语气句子中时，其时态随主句时态。须注意的是，此时的 if 多用于表达尚未发生的事情或行为，其主句时态通常为“将来”时态。例：

He is/was going to come if he is/was in town.

He will/would work h1、真实条件句ard if you hire/hired him.

（例句中的过去式用于讲述过去的事7.as if好像是……情。）

He would certainly come to the party if he is in town.

If he has already come to town, he would definiy join us.

下面这个句子也不能列为“虚拟语气”：

if后加真实语气（虚拟语气）的句型，结构

例如：if

1.if you want/like 如果你愿意的话

You can come and stay with3.对将来的虚拟 us if you want.

2.if so如果是的话

Are you planning to return to work, and if so, who is going to look after the baby?

3.if not如果不是的话

Has an另：虚拟语气用来表示说话人的主观愿望或想，而不表示客观存在的事实，所说的是一个条件，不一定是事实。yone dealt with the technical problems? And if not, why not?

4.if necessary/if sible 如果必要/可能的话

We are ready to fight for our rights if necessary.

I should like to be back here by 10:30 if sible.

5.n if即使

I’d rather nr sell this painting, n if they offered me a million dollars.

6.what if 要是……，那怎么办？ 如果……那会怎样？

What if the boss walked in here now and saw us?

就这么些结构了，总结一下。当IF对现在虚拟，从句用过去时，主句用should/would/could/might+V原形。当IF对过去虚拟的话从句要用过去完成时，主句用should/would/could/might+he done。