虚拟语气讲解1精要.pptVIP

错综时间的条件句 如果从句与主句的动作发生的时间不同，需要按时间来确定虚拟形式。 If he had not taken my advice then, he wouldn‘t do it much better like this now. 如果他当时不听取我的建议，他现在就不会 干得这样好。 2. If they had studied hard, they could do it easily now. 如果他们努力学习的话，现在干的就会容易些。 * 虚拟语气 虚拟语气是一种特殊的动词形式，一是用来表 示说话人所说的话不是一个事实，而是一种假 设、猜测、怀疑等(在条件从句中)；一是表示 说话人的愿望、要求、命令、建议等 (在宾语 从句、表语从句、同位语从句)。 一、在条件从句中 ，表示与事实相反的条件，分三种情况(以 do 为例)： 主语+ would （could / might) do ①if+ 主语+did ②if+主语+should do ③if+主语+were to do 与将来事实相反 主语+ would （could / might) +have done if+主语+ had +done 与过去事实相反 主语+ would （could / might )do if +主语+ were /did 与现在事实相反 主句 从句 时间 1. If I were you, I would go at once. (与现在事实相反) 2. If it were sunny tomorrow, I would come to see you. (与将来事实可能相反) 3. If you had come a few minutes earlier, you would have met him. (与过去事实相反) 省略 if 的条件从句 当从句中有 were, had 或 should 时，可省略if ， 而把它们放在句首。 1) If I were to meet him tomorrow, I should ask him about it. Were I to meet him tomorrow,… 2) If he should fail in the experiment this time, he would try again. Should he fail in the experiment… 3) If I had had enough money with me yesterday, I would have bought that coat. Had I had enough money with me yesterday… 介词或介词短语代替if 从句的虚拟语气 Without music, our life would be very different. = If there were not music,…. But for your help, we wouldn’t have finished our work in time. = If you hadn’t helped me,….. but for 要不是….. *