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有關虛擬語氣的幾點重要說明

一、錯綜時間虛擬條件句

所謂錯綜時間虛擬條件句即條件從句與主句所指時間不一致，如從句指過去，而主句即指的是現在或將來，此時應根據具體的語境情況，結合上面提到的三種基本類型對時態作相應的調整。如：

If you’d listened to me, you wouldn't be in such trouble now. 如果你聽了我的話，你現在也不會有這樣的麻煩了。

二、含蓄虛擬條件句

所謂含蓄虛擬條件句即指將條件從句隱藏在上下文一定的短語中的一類條件句。如：

To hear him talk，you'd think he was Prime Minister. 聽他講話你會以為他是首相。

Without your help，I couldn't have achieved all this. 要不是有你幫助，我不會取得這些成就。

三、連用虛擬語氣的幾個固定表達

有三個表示“若不是”、“要不是”的表達，它們總是連用虛擬語氣，它們是 but for, if it were not for, if it hadn’t been for。如(from www.hz123456.com)：

But for your help we would have been late. 幸虧你幫忙，要不我們就遲到了。

If it weren’t for water, no plant could grow. 要是沒有水植物就無法生長。

If it hadn’t been for your help, we wouldn’t have succeeded. 要不是有你幫忙，我們是不會成功的。

四、虛擬語氣的省略與倒裝

有時可將條件從句的連詞 if 省略，而將從句中的were, should, had 等提到句首。如：

Were it not for your help, I wouldn't be doing so well. 若不是你幫忙，我現在不會干得這樣好。

Had I been there, I would have asked her the question. 如果我在那里，我就會問她這個問題。