雅思語法|在條件狀語從句的虛擬語氣是怎樣的？對于這塊知識還不清楚的學(xué)生可以詳細了解一下：

　　1. 用if條件從句表示的虛擬條件，是虛擬條件最普通的方式。

　?、?虛擬現(xiàn)在時表示與現(xiàn)在事實相反的假設(shè)，其if 從句的謂語形式用動詞的過去式 (be 一般用were)，主句用would/ should/ could/ might +動詞原形。

圖片來源站酷

　　【句型結(jié)構(gòu)】

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

　　【練習(xí)指導(dǎo)】

　　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.

　?、?虛擬過去時是表示與過去事實相反的假設(shè)，if 從句的謂語形式用過去完成時(即had+過去分詞)，主句用would / should / could / might + have +過去分詞。

　　【句型結(jié)構(gòu)】

　　If I had done_____ before, I could have done____.

　　【練習(xí)指導(dǎo)】

　　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. 除了表示虛假條件外，if從句還可以表示對將來的推測，由于是將來還沒有發(fā)生的，所以談不上是真實的還是虛假的，只能說這個事情發(fā)生的可能性有多大。一般情況下，可以用陳述語氣的if從句來表示對一個未來事實的推測，這個事實是完全可能發(fā)生的。

　　【句型結(jié)構(gòu)】

　　If sb. were to / should + 動詞原形，sb. would / should /could/ might +動詞原形。

　　【練習(xí)指導(dǎo)】

　　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.