2025年全国英语等级考试pets3三级常见语法解析

全国英语等级考试 pets3 三级常见语法解析(4)虚拟语气表达与客观事实相反的假设，由 if 虚拟条件从句和主句构成。 一、虚拟语气的主线内容 根据虚拟与其这种与事实相反的假设所对应的时间不一样，虚拟语气的 if 虚拟条件从句与主句的谓语动词分别有三类构成形式： 假设类型 If 虚拟条件从句 主句与目前事实相反 Did/were Would/should do 与过去事实相反 Had done Would/should have done 与未来事实也许相反 Were to do/did/should do Would/should do 例：1、I wouldn”t talk that way if I were Peter. 2、If the whole operation had not been planned before hand, a great deal of time and money would have been lost 3、Jean doesn”t want to work right away because she thinks that if she were to get a job she probably wouldn’t be able to see her friends very often. 4、I would ask George to lend us the money if I knew him. 5、Do you think there would be less conflict (战斗、斗争) in the world if all people spoke the same language. 6、If Bob had come with us, he would have had a good time. 二、if 的省略形式(又称虚拟语气的倒装构造) 在 if 虚拟条件从句中，假如谓语局部包含 were，should，had 等词，则可以把这些词放到主语前，省略 if，构成虚拟语气的倒装构造。 三、主句与从句时间不全都时虚拟语气的构成 当虚拟语气的 if 虚拟条件从句和主句的动作发生的时间不全都时，要根据各自表达的时间采纳对应的虚拟语气的构成形式。 例：1、If I had attended the meeting yesterday, I would know what happened now. 2、If you had taken our advice at that time, you would not be in trouble now. 四、主观倾向性动词引导的虚拟语气的构成 在英语中存在某些动词，表达提议、命令、规定等主观的倾向，由这些动词引导的 that 宾语从句中，从句的谓语动词要用 should+动词原形，should 可以省略。此类常见的主观倾向性动词有“一坚持、二命令、三提议、五规定”，分别是： 一 坚 持 ： insist 二 命 令 ： order 、 command 三 提 议 ：suggest 、 advise(n advice) 、 propose( 提 议...