：问一句话

浪迹的小鱼

原句：
If you had told me about it earlier,I would have been able to help you

可以说成下面的句子么？
If you would have told me about earlier,I would have been able to help you

minori1979jp

不可以。

这是有关虚拟语气的知识。

16. 虚拟语气
1） 概念
　　 虚拟语气用来表示说话人的主观愿望或假想，所说的是一个条件，不一定是事实，或与事实相反。

2） 在条件句中的应用
　　 条件句可分为两类，一类为真实条件句，一类为非真实条件句。非真实条件句表示的是假设的或实际可能性不大的情况，故采用虚拟语气。

16.2 非真实条件句
1）时态：可以表示过去，现在和将来的情况。它的基本特点是时态退后。
a.　 同现在事实相反的假设。
句型 ： 条件从句　　　　　主句
　　　　一般过去时　　　should( would) +动词原形
　 If they were here, they would help you.

b.　 表示于过去事实相反的假设。
句型： 条件从句　　　　　 主句　　　　　
　　　过去完成时　　　 should(would) have+ 过去分词
　 If she had worked harder, she would have succeeded.　　
　 The rice would not have been burnt if you had been more careful.　
　 If my lawyer had been here last Saturday, he would have prevented me from going.

　 If he had come yesterday, I should / would have told him about it.
　 含义：He did not come yesterday, so I did not tell him about it.
　 If he had not been ill and missed many classes, he would have made greater progress.
　 含义： He was ill and missed many lessons, so he did not make greater progress.　

c.　 表示对将来的假想
　句型：　 条件从句　　　　　　 主句
　　　　 一般过去时　　　　　 should+ 动词原形
　　　　 were+ 不定式　　　　 would + 动词原形
　　　　 should+ 动词原形
　If you succeeded, everything would be all right.
　If you should succeed, everything would be all right.

请参考：
http://news.hongen.com/news/show_34_61_2.html

helladise

小新解释得真详细啊

浪迹的小鱼

可是还有这句话

You wouldn't have make such a mistake if you had been more careful

minori1979jp

原帖由 浪迹的小鱼 于 2008-12-21 09:36 发表
可是还有这句话

You wouldn't have make such a mistake if you had been more careful

这句话总体上来说，虚拟语气的使用上是没有错误的，除了一点别的小错误。

You wouldn't have made such a mistake if you had been more careful

[ 本帖最后由 minori1979jp 于 2008-12-21 10:04 编辑 ]

peteryang821

虚拟语气两个句子不可能同一时态，虚拟的部分总比假设的部分的时态前进一个时态

[ 本帖最后由 peteryang821 于 2008-12-22 17:29 编辑 ]