導(dǎo)讀 關(guān)于millions of people travel by plane這個問題很多朋友還不知道,今天小六來為大家解答以上的問題,現(xiàn)在讓我們一起來看看吧!1、原
關(guān)于millions of people travel by plane這個問題很多朋友還不知道,今天小六來為大家解答以上的問題,現(xiàn)在讓我們一起來看看吧!
1、原句應(yīng)該是這種形式:The millions of calculations involved, if they had been done by hand(這種虛擬語氣比較容易看出來了吧?這里是插入語哦,對這個句子進(jìn)行進(jìn)一步的補(bǔ)充說明), would have lost all practical value by the time they were finished. 可以當(dāng)成這樣來理解If they had been done by hand, the millions of calculations involved would have lost all practical value by the time they were finished. 虛擬語氣中,如果從句時過去完成時。
2、主句就用would have done的形式。
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