非真实条件句的英文(非真实条件句句型)

我们都知道，在大学英语四级考试中，单独考察英语四级语法的题型很少，但是英语四级语法知识点却贯穿整张试卷，下面是英语四级频道为大家整理的大学英语四级语法知识，希望可以为大家带来帮助。

2017年12月大学英语四级语法大全目录

16.2 非真实条件句

时态：可以表示过去，现在和将来的情况。它的基本特点是时态退后。

a.　 同现在事实相反的假设。

句型 ： 条件从句　　　　　主句

一般过去时　　　should( would) +动词原形

If they were here, they would help you.

b.　 表示于过去事实相反的假设。

句型： 条件从句　　　　　 主句

过去完成时　　　 should(would) have+ 过去分词

If she had worked harder, she would have succeeded.

The rice would not have been burnt if you had been more careful.

If my lawyer had been here last Saturday, he would have prevented me from going.

If he had come yesterday, I should / would have told him about it.

含义：He did not come yesterday, so I did not tell him about it.

If he had not been ill and missed many classes, he would have made greater progress.

含义： He was ill and missed many lessons, so he did not make greater progress.

c.　 表示对将来的假想

句型：　 条件从句　　　　　　 主句

一般过去时　　　　　 should+ 动词原形

were+ 不定式　　　　 would + 动词原形

should+ 动词原形

If you succeeded, everything would be all right.

If you should succeed, everything would be all right.

If you were to succeed, everything would be all right.

2017年12月大学英语四级语法大全目录

  相关文章:

   Directions:Forthispart,youareallowed30minutestowriteashortessayentitled“MyViewonUniversityRanking”Youshouldwriteatleast150words.范文MyViewonUniversityRankingThepastyearshave

   相传在4000多年前的夏朝，即中国历史上第一个奴隶制王朝就开始有了历法(calendar)，后人把当时中国古老的传统历法叫“夏历”。夏历是按月亮的运行周期(rotatingcycle)制定的，故又称作“阴历”。由于夏历中有一年四季节

   Directions:Forthispart,youareallowed30minutestowriteacompositiononthetopicABoominContinuingEducation.Youshouldwriteatlea

   四六级图表作文题总是让大家不知所措，英语四级频道给大家发50个套句，融会贯通走起!每天过10个，5天时间解决四六级图文写作!GO!GO!!GO!!!1.thetableshowsthechangesinthenumberof……overtheperiodfrom……to……该表格描述了在……年之……年

   距离2019年12月大学英语四级考试还剩不到2个月时间，不知各位考生准备好了嘛~四级写作是四级考试中的重头戏，今天四六级为大家分享2019.12月英语四级范文模板：宿舍生活，满满的干货，只要你认真用心的学，就能取得好成绩!12月英语