作业帮虚拟语气如何使用
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虚拟语气如何使用
虚拟语气如何使用
虚拟语气如何使用
虚拟语气：用来表示所说的话只是一种主观的愿望、假象、建议等.
虚拟语气的用法：
一、在条件从句中的用法
1、与现在事实相反（虚拟现在）,谓语动词的形式是：
从句：动词过去式（be的过去式一般用were）；
主句：would（或should,could,might）+动词原形
例：(1)If I were a student,I would study hard.
(2)If she were free,she would go with us.
(3)The grass would grow taller if it rained more often this year.
2、与过去事实相反（虚拟过去）,谓语动词的形式是：
从句：had+过去分词；
主句：would（或should,could,might）+have+过去分词
例：(1)The new teacher would have taught better if she had had more experience.
(2)If I had known her telephone number,I would have called her.
(3)What should we have done if that had happened?
3、与将来可能相反,谓语动词的形式是：
从句：动词过去式或should（或were to）+动词原形；
主句：would（或should,could,might）+动词原形
例：(1)If I were a soldier in the future,I should be a good one.
(2)If she should come early,please tell her to wait a moment.
(3)If you were to come to Shenzhen,you could see the great changes here.