虚拟语气常见句型

一、wish从句中的虚拟语气
wish +从句表示一种愿望或希望。

是要。

就好了！
1. 从句动词用“过去式” ，表示从句动作与wish同时存在或发生。

例如：
I wish I knew as much as you do. 要是我知道的和你一样多就好了。

I wish I were a PLA man .我希望我是一名中国人民解放军。

2. 从句动词用“had+过去分词，表示从句动作在wish之前存在或发生。

例如：
I wish I had been at the club yesterday. 要是我昨天在俱乐部就好了。

3. 从句动词用“would/could+动词原形”，表示从句动作在wish之后存在或发生。

例如:
I wish it would stop raining tomorrow. 我希望明天雨能停。

二、as if 从句中的虚拟语气
“as if/as though +从句”，表示方式。

从句中动词的用法与wish从句中的动词类似。

例如：1. She looks as if she were ten years younger. 她看起来好像年轻了十岁。

(从句动作与主句同时存在或发生)
2. The village looks as though it had been deserted for years. 这个村子看起来好像很多年没人住了。

(从句动作在主句之前存在或发生)
3. They talked and talked as if they would never meet again. 他们意犹未尽地谈着，好像将来再也不见面一样。

(从句动作在主句之后存在或发生)
He looks as if he were ill .他看起来好象是生病了。

（2）Tom looks as if nothing had happened to him .汤姆看起来啥事都没有发生似的。

注意：从句表示的内容若为事实或可能为事实，也可用陈述语气。

三、It’s time +(that)… 句型中的虚拟语气
在It is (high) time (that)…句型中，从句的动词用过去式(be用were)或should do, shou ld不可省，表示“某人该做某事了” 。

例如：
It is time that the students went to bed. 现在是学生们睡觉的时候了。

Now it is about time you should take the place of me. 现在你该接我的班啦。

四、would rather从句中的虚拟语气
1. would rather sb+动词过去式, 表现在或将来的愿望。

例如:
To be frank, I’d rather you were not here now. 坦率地说, 我宁愿你现在不在这里。

2. would rather sb+ had+过去分词, 表过去的愿望。

例如:
I’d rather I hadn’t remember ed leaving something in the toilet and gone back to f ind it, or I wouldn’t have got lost. 我宁愿当时没想起把东西落在洗手间并返回去找，否则我就不会迷路。

五、“(should) do 型”虚拟语气
在表示建议、要求、命令等的名词性从句中，谓语动词用“(should)＋动词原形”。

常见动词有：一个坚持（insist）, 两个命令(order, command), 三个建议(suggest, advise, recommend), 四个要求(ask, demand, request, require)。

例如：
I suggested that he (should) go there at once. (宾语从句)
= I made a suggestion that he (should) go there at once. (同位语从句)
= My suggestion was that he (should) go there at once. (表语从句)
= It is suggested that he (should) go there at once. (主语从句)
注意：suggest与insist后宾语从句中的虚拟语气与陈述语气的区别。

1. Her face suggested (暗示/表明) that she was ill. So I suggested (建议) that she (should) be sent to hospital immediately.
2. Tom insisted (坚决要求) Mike (should) apologize to his teacher, but Mike insiste
d (坚持说/坚持认为) that h
e was not wrong.
六、if only ：要是。

就好了
一、only if 不用虚拟语气
1. 在only if 这个短语中，副词only是中心词，而从属连接词if则只是用来连接从句的，因此，它表示“只有……（才）；只有在……的时候，唯一的条件是……”的意思。

例如： I told him he would succeed only if he tried hard. 我告诉他，只有努力才能成功。

2. only if 有时也写成only.。

.if，表示唯一的条件，但是意思不变。

例如： I will only come home if you come with me. （= I will come home only if you come with me.）只有你跟我一起走，我才回家。

因此，根据上面的分析，课文中的句子我们也可以把它改成Yet they could get the blood only if one of the frightened children would agree to give it. 这样，句子就比较容易理解，意思也就十分清楚了：但是，只有这些受惊吓的孩子中有人自愿献血，他们才能够得到血。

二、if only
1. 在if only这个短语中，中心词是从属连接词if，而副词only只是加强if的语气的，因此，if only仅仅是if的一种强化形式，不仅能表达说话人的愿望，而且能表达条件。

因此，它同if一样，也能引出条件状语从句。

If only they were here now， we would be able to celebrate their wedding anniversary.如果他们现在在这里，我们就能庆祝他们的结婚纪念日了。

2. if only常常用来表达强烈的愿望或遗憾，因此，主要用在虚拟语气中，用以表达强烈的愿望或非真实条件。

常被译为“但愿”、“要是……该多好啊”等。

例如： If only she could have lived a little longer. 要是她能活得再长一些，那该多好啊！
3. if only从句在大多数情况下用作虚拟条件句，但是偶尔也有用在真实条件句的情况。

例如：
He will succeed if only he does his best. 只要他竭尽全力，他就会成功。

4.If only I were as clever as you!要是我和你一样聪明就好了！。