雅思大作文舉例只會用if？是時候換換啦
來源：環(huán)球教育
小編：長安 892今天北京環(huán)球教育王洪亮老師跟大家分享一個老生常談的知識點，什么叫做條件狀語從句呢？
通俗來講，往往由引導詞 if 或 unless 引導的狀語從句叫做條件狀語從句。在英文中，條件是指某一件事情實現(xiàn)之后，其它事情才能發(fā)生，通常譯作“假如”。在雅思寫作中，條件狀語從句十分好用，拿過來就能用，可以起到很好的突出強調作用。
一提到條件句，很多同學馬上就會想用if來引導。首先，我們一起來看以下七個句子：
Part A：
1.You can borrow my dictionary if you return it before you go home.
2.You cannot go to university if you do not have good grades.
3.Pollution will get worse if we continue to live in a throwaway society.
4.Many developed countries are willing to waive the Third World debt if the money is reinvested in education and medicine.
5.Some countries will never be able to rectify their deficits even if they work hard.
6.Computers are difficult things to understand, even if you read a lot of books about them.
7.Crime is a problem, even if you go to relatively safe countries.
這些句子都是由if 引導的條件句（ even if 可以是條件也可以是讓步狀語從句），這些句子固然很好，但是不是有些千篇一律呢？
條件狀語從句不僅僅限于if，下面給大家介紹一些可以替換if 的方式。我們分別用以下短語來替換上面七句話中的if ：
providing that （假如 ） / unless (除非） / as long as （只要） / on condition that （ 如果， 條件是 ）/ no matter how （不管怎樣）/ however many （ 無論多少）/ wherever （無論什么地方）
第一句話可以直接用providing that ( 也可以用provided that ) 來替換if
1.You can borrow my dictionary providing that you return it before you go home.
第二句話可以把if not 換成unless
2.You cannot go to university unless you have good grades.
第三句話可以直接用as long as 替換if
3.Pollution will get worse as long as we continue to live in a throwaway society.
第四句話可以直接用on condition that 替換if
4.Many developed countries are willing to waive the Third World debt on condition that the money is reinvested in education and medicine.
第五句話用no matter how 直接替代if
5.Some countries will never be able to rectify their deficits even if they work hard.
第六句話用however many 直接替代even if
6.Computers are difficult things to understand, however many books you read about them.
第七句話用wherever 直接替代even if及后面的內容，改寫為
7.Crime is a problem, wherever you go.
Part B：如果我們強調的重點是條件里的內容，那么我們可以把條件句放在句子的前面?，F(xiàn)在試著把剛剛七個句子的強調內容提前：
1.Providing that you return it before you go home, you can bor-row my dictionary.
2.Unless you have good grades, you cannot go to university.
3.As long as we continue to live in a throwaway society, pollu-tion will get worse.
4.On condition that the money is reinvested in education and medicine, many developed countries are willing to waive the Third World debt.
5.No matter how hard they work, some countries will never be able to rectify their deficits.
6.However many books you read about them, computers are difficult things to understand.
7.Wherever you go, crime is a problem.
Part C：練習
現(xiàn)在到大家自由發(fā)揮的時間了，大家根據上面七個短語，來試著補充以下句子 ：
1.British universities will accept students from abroad __________
2.Working for a large company can be a fulfilling experience ____
3.Most banks are happy to lend customers money _____________
4.The government will reduce income tax ____________________
5.The environment situation will continue to worsen ____________
6.There will always be long waiting lists at our hospitals ________
7.Traveling helps you understand more about the world around you ______
Part D：此外，一些名詞也可以表示條件，比如prerequisites ( n 前提，先決條件 ） conditions ( n 條件 ） re-quirement ( n 要求，條件 ）
我們一起來看以下三句話，來進行填空練習
1.Being able to drive is one of the _____ of the job of salesmen. （prerequisites)
2.Before you accept a job, it is important that you agree with the ______ of the contract. ( conditions )
3.It is a _____ of the university that you attend an interview. ( requirement )
Part E：if 除了可以表示條件外，還可以表示虛擬。條件可以是事實，但是虛擬表示與事實相反，不可能實現(xiàn)。虛擬語氣有三種基本類型：與現(xiàn)在事實相反，與過去事實相反，與將來事實相反。
這三種情況所對應的句子結構和時態(tài)是不同的：
1.與現(xiàn)在事實相反：if + 一般過去時，主語 + would + 動詞原形
例句：如果我是你，我就會接受他的建議
If i were you, I would accept his suggestions.
2.與過去事實相反：if + 過去完成時 (had done)，主語 + would + have done
例句：如果你昨天在這里，就能見到他了
If you had been here yesterday, you would have seen her.
3.與將來事實相反：if +一般過去時，主語+would +動詞原形
例句：如果太陽不見了，你就會贏得大獎
If the sun were to disappear, you would win the jackpot.
所以我們看，其實條件狀語從句可以有很多種不同的表達，大家可以在平時練習的時候變化自己的表達方式，豐富自己的文章。
