UC知道这两句子有什么区别? 虚拟语气
来源：百度知道 编辑：UC知道 时间：2024/06/02 18:01:47
1,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
A If she had worked harder, she would have succeeded.
2,混合条件句
主句与从句的动作发生在不同的时间，这时主，从句谓语动词的虚拟语气形式因时间不同而不同，这叫做混合条件句。
B If you had asked him yesterday, you would know what to do now.
我理解不了..好像都一样啊..解析一下 谢谢
句型： 条件从句 主句
过去完成时 should(would) have+ 过去分词
A If she had worked harder, she would have succeeded.
2,混合条件句
主句与从句的动作发生在不同的时间，这时主，从句谓语动词的虚拟语气形式因时间不同而不同，这叫做混合条件句。
B If you had asked him yesterday, you would know what to do now.
我理解不了..好像都一样啊..解析一下 谢谢
A If she had worked harder, she would have succeeded. 都是过去的假设。
B If you had asked him yesterday, you would know what to do now.
前面是假设过去，意思是如果你昨天问我，
后面是假设现在，意思是现在你就会知道做什么了。
第一句是：如果她以前能更努力工作，它就能成功
意思是说她以前不努力，这会没成功
第二句：如果昨天问过他，今天你就知道怎么做了，
这两句是时态的差别，句意上没什么区别
第一句用的全部是虚拟,但是混合条件句就不是了,you would know what to do now用的不一定是虚拟,也有可能应该用什么时态就用什么时态
例如:
I could have come the party yesterday,but i was busy then.
虚拟的用法还是要弄熟的哦