每天一句英語口語:需要支持大綱

He would have lost his position if you hadn't backed him up.

假如你當初沒有支持他,他可能已經失去職位了。

學習亮點:

back up

1.支持
He would have lost his position if you hadn't backed him up.
假如你當初沒有支持他,他可能已經失去職位了。

would have done

1.這種虛擬語氣的句子按道理是應該配套用的：主句had done +從句would have done。但是有些情況下可以用混合型，也就是不完全配套。本句中答案用would have a chance to survive是表示與現在事實相反，也就是說 那他“現在”還可能活着。想一想如果改用would have had a chance的話，就表示與過去事實相反，也就是說那他“當時”就有機會活着——這肯定不是說話者的本意。

2. could have done也表示虛擬語氣，它的含義是“本來能做但沒有做”，如He could have passed the exam.(本來能考及格但是沒有）。本句它和would have done的意思和用法差不多，也不好用。

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