雅思备考之雅思语法if条件状语从句的虚拟语气有哪些？下面青岛新航道的小编带你解答这个问题！
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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