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雅思备考之雅思语法if条件状语从句的虚拟语气详解

2020-11-26 环球教育

  雅思备考之雅思语法if条件状语从句的虚拟语气有哪些?下面小编给你分享雅思备考之雅思语法if条件状语从句的虚拟语气的相关内容,希望可以帮助大家。


  1.用if条件从句表示的虚拟条件,是虚拟条件最普通的方式。


  ①虚拟现在时表示与现在事实相反的假设,其if从句的谓语形式用动词的过去式(be一般用were),主句用would/should/could/might+动词原形。


  【句型结构】


  If I were _____,I would/should/could/might do_______.


  【练习指导】


  Q:How to dispose garbage?


  A:You know sometimes,people would litter around because they couldn’t find any trash can at hand.If I were in the position of my city’s mayor,I would invest a large sum of the city’s finance placing lots of trash bins along the roadside.Besides,I would carry out recycling programs and dispose of hazardous materials like batteries with far tougher standards.In a word,I think we just need to dispose of garbage in a safe and environmentally friendly manner.


  ②虚拟过去时是表示与过去事实相反的假设,if从句的谓语形式用过去完成时(即had+过去分词),主句用would/should/could/might+have+过去分词。


  【句型结构】


  If I had done_____ before,I could have done____.


  【练习指导】


  Q:Describe a place you want to visit


  A:If I had got enough time and money three years ago,I could have traveled to Santorini which is one of the most luxurious destinations in Greece.


  2.除了表示虚假条件外,if从句还可以表示对将来的推测,由于是将来还没有发生的,所以谈不上是真实的还是虚假的,只能说这个事情发生的可能性有多大。一般情况下,可以用陈述语气的if从句来表示对一个未来事实的推测,这个事实是完全可能发生的。


  【句型结构】


  If sb.were to/should+动词原形,sb.would/should/could/might+动词原形。


  【练习指导】


  Q:Will you buy perfume as a gift?


  A:To be honest,giving others perfume as a gift is not that common with people I know.We prefer giving flowers or books instead because perfume seems to be kind of private.But it is really my mom’s favorite.If I should buy a bottle of Miss Dior for mom as her birthday gift,she might love it for sure.




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