if he had worked harder,he would have succeeded,这里为什么要用would

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/20 20:28:16

if he had worked harder,he would have succeeded,这里为什么要用would have succeded?

虚拟语气,全句意思是,如果他曾经工作的更努力一些的话,他本来会成功的.
因为他之前工作的不够努力,所以他没有成功.此处用虚拟语气表示本来可以做到却没有做到的事情.would have done 和 should have done这两种形式都可以用来表达虚拟语气中的”本来“或”本应该“done的意思.
再举个例子：假如我是你,我会工作的更努力.If I were you,I would work harder.(因为我根本不可能是你,所以要用虚拟语气,必须用were.如果用am就错了.)
再问：什么事虚拟语气，虚拟语气的句子结构是什么？
再答：虚拟语气用来表示说话人的主观愿望或假想，而不表示客观存在的事实，所说的是一个条件，不一定是事实，或与事实相反。虚拟语气通过谓语动词的特殊形式来表示。英语中的语气分为陈述语气、祈使语气、虚拟语气三类。应用条件: 在表示虚假的、与事实相反的或难以实现的情况时用虚拟语气，表示主观愿望或某种强烈情感时，也用虚拟语气。即当一个人说话时欲强调其所说的话是基于自己的主观想法，愿望，假想，猜测，怀疑或建议，而不是根据客观实际，就用虚拟语气。用法及动词形式 1、表示与现在事实相反的情况：从句：If 主语+过去时主句：主语+should/would/could/might+do eg：If I were you,I would take an umbrella.如果我是你，我会带把伞。（事实：我不可能是你） 2、表示与过去事实相反的情况从句：If 主语+had+done 主句：主语+should/would/could/might+have done　 eg：If I had got there earlier,I should/could have met her. 如果我早到那儿，我就会见到她。 3、表示对将来情况的主观推测从句：①if+主语+were to do 主句：①主语+should/would/could/might+do 　②if+主语+did/were ②主语+should/would/could/might+do　　③if+主语+should+do ③主语+should/would/could/might+do　 eg：1．If he should come here tomorrow,I would talk to him.如果他明天来这儿的话，我就跟他谈谈。（事实：来的可能性很小）注意，在虚拟语气的从句中，动词be的过去时态一律用were，不用was。

if he had worked harder,he would have succeeded,这里为什么要用would 虚拟语气If she had worked harder,she would have succeeded这是过去完成时 Stave said that if he had known how it worked,he would have he would have if i had asked if he had worked hard at high school ,he would be a college If she had worked harder,she_____ A.would succeed B.would ha 英语翻译如果他昨天来这里,就会知道.if he had come yesterday,he would know.为什么 if i had worked hard,i would have succeed If he had only had enough money,he would have bought that ho had he worked harder he ——the final examination A must have Had he worked harder,he（）the exams.A.must have got through If he had a car,he would not have to walk 请翻译.