雅思寫作語法之虛擬語氣如何使用
雅思寫作中，正確的使用多樣化的句式有利于寫作獲取高分。在這些句式中，虛擬語氣的使用是個具有挑戰(zhàn)性的語法點，熟練使用虛擬語氣可以使作文句式呈現(xiàn)層次性。
1.If sb had done sth(壞事), sb would never have done sth(好事).
如果某人過去做了某事(壞事)，那么他永遠不可能做某事
If Hugh Miller, after toiling all day in quarry (采石場), had devoted his evenings to rest and recreation, he would never have become a famous geologist.
2.Sb would never have done sth(好事1) , never have done sth (好事2), if sb had done sth (壞事)
某人永遠不可能做某事， 永遠不可能做某事， 如果某人過去做了某件壞事
The celebrated mathematician, Edmund Stone, would never have published a mathematical dictionary, never have found the key to science of mathematics, if he had given his spare moments to idleness.
3.Had sb done sth(壞事) ， sb would never have done sth (好事)
如果某人過去做了某件壞事，而不是去做某件好事，那么他永遠不可能做某事(好事)
Had the little Scotch lad, Ferguson, allowed the busy brain to go to sleep while he tended sheep on the hillside, instead of calculating the position of the stars by a string of beads, he would never have become a famous astronomer.
對以上幾個虛擬語氣的應用范文
Group discussion Google
If Google had ignored the importance of group discussion, this high-tech company would never have achieved today's stunning success.
(If sb had done sth, he would never have done sth)
Google, a once obscure, ailing / fragile company, would never have achieved today's stunning success, never have conquered so big a market share, if it had ignored the importance of group discussion.
(sb would never have done sth , never have done sth , if sb had done sth)
Had Google , a once small , obscure company , ignored the importance of group discussion ，the hi-tech tycoon would never , never have harvested today's overwhelming success . (壓倒性的成功)
最后，給大家分享幾個雅思精品課程，希望對大家有幫助。
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