高中英语虚拟语气句型

常见的虚拟语气句型 1． if条件句 条件状语从句可分为真实条件句，即条件满足，事实就发生的情况；和非真实条件句，即与事实相反或难以实现的假设情况。虚拟语气的基本句型，即是这种非真实条件状语从句。其具体形式如表中所示： 条件从句谓语 主句谓语 与现在事实相反 动词过去式(动词be用were) would/should +动词原形 与过去时间相反 had + 过去分词 would/should + have +过去分词 动词过去式(动词be用were) 将来不大可能发生的事 或 should +动词原形 would/should +动词原形 或 were +动词不定式 If I knew English, I would go abroad to further my study. If I had got up early, I wouldn’t have been late. If I were to do it, I should do it at once. 【说明】 ①在非正式英语中，条件从句中的第一、第三人称单数主语后可用was代替were。 If I was you, I would accept the invitation. ②主句中的would可用于各种人称，而should只用于第一人称。 ③在主句中也可用情态动词could，might代替would，should。 If I had had enough time, I might have done it better. ④条件从句中的谓语动词含有were，had，should时，可以省略从属连接词if，然后采用倒装结构，把were，had，should移到主语前面。 Should you pass this way, do drop in for a visit.= If you should pass this way,…… Had I known it, I wouldn’t had made such a silly mistake.= If I had known it,…… Were it left to me to decide whether I sho