高二虚拟语气用法讲解(ppt)

Had I had time, I would have gone to see the film. =If I had had time, I would have gone to see the film. 五 在虚拟语气的条件从句中，可以省略if ，但要 把状语从句变成一般疑问句语序。 ____ C today, he would get there on Friday. A.Was he leaving B.C. Were he to leave B. If he leaves D. If he is leaving
六 有时虚拟语气的条件从句不用if引导，而用but for, without, if only, otherwise等词。 1) But for your help, I couldn’t have made such great progress in English. 2) Without air, we couldn’t live. 以but for, without开头的句子，谓语动词的形式 和if的主句的一致。 3)3) If only the weather were fine. 以If only开头的句子，谓语动词的形式和if从句的 一致。 4)4) I had been there by taxi, otherwise I would have missed the train. 主、从句的谓语动词的形式都和if从句相一致。
主 句
主语 + would/ should/could/ might +do 主语 + would/ should/could/ might have done
If + 主语 + did (be用 were) If + 主语 + had done
与过 去事实 相反的 假设
时态
构 主从 成句 虚拟条件从句(if…)
与过去事实相反，宾语从句的谓语动词用过去完 成时。
三 与将来事实相反
从句谓语：
1）过去时 2）should + 动词原形 3) were to + 动词原形
主句谓语：
would, should, could, might +动词原形
1)If it were Sunday tomorrow, I should go to see a film.
2) If he should have time next Sunday, he would go to visit the Great Wall. 3) If I were to be twenty next year, I could take the course.
1)She talked about America as if he had been born there. 2) He sings as though he were a singer. 八、由as if或as though引导的状语从句，其谓语 动词用过去式或had + 动词的过去分词。
A an Italian. 1) He appears as though he ____ A. were B. was C. has been D. be D there yesterday. 2) It seems as if he ____ A. was B. were C. has been D. had been
九、虚拟语气在宾语从句中的应用
(1）* wish + 宾语从句 1)I wish I were a doctor. 与现在事实相反，宾语从句的谓语动词用过去时。 2) I wish I should go abroad next year. 与将来事实相反，宾语从句的谓语动词用should, would, could, might + 动词原形。 3)3) I wish I had seen the football match.
七 有时虚拟条件从句与主句的时间不一致， 出现混合虚拟语气结构。
1)If he had followed the doctor’s advice, he would be well. 2) If I were you I would not have gone to see the film yesterday. 在混合虚拟语气结构中，从句表示的动作与主句 表示的动作的时间不一致，这时主、从句谓语动 词的形式要根据它们发生的时间进行调整。
四 与过去事实相反
从句谓语： had + 动词的过去分词
主句谓语：
would, should, could, might + have + 动词的过去分词
If he had come earlier, he would have seen her. If he had driven more carefully, he would not have had the car accident yesterday
主 句 主语 + would/ should/ could/ might do
与将 来情况 相反的 假设
①If + 主语 + did ② If + 主语 +were to do ③ If + 主语 + should do
ห้องสมุดไป่ตู้ 虚拟语气在条件从句中的应用
1）与现在事实相反 过去时 从句谓语： would, should, could, might +动词原 主句谓语： 形 If I had a lot of money I would buy a villa If I were you, I would go there. 注意：在虚拟语气中，只能用were，不能用was.
条件句表示主句的条件,分真实条
件句 和虚拟条件句 两种。
a. 真实条件句 表示条件是真的或有可 能实现的, 采用陈述语气。 b. 虚拟条件句 表示条件是无法实现或 几乎无法实现的, 采用虚拟语气。
一、用法归纳: 虚拟语气在条件状语从句中的用法
主从 虚拟条件 成 句 从句(if …) 时态 与现 在事实 相反的 假设 构