引導虛擬語氣的詞



一些含有假設、猜想、建議等意思的動詞后面的賓語子句要用should+原形動詞結構,should往往可以省略,這類動詞有:advice, order, request, suggest等。
He suggested that I practice more.
他建議我多多練習。

表示假設語氣的副詞子句可以由不定詞片語或分詞片語等代替。
To think of his singing, I could hardly help laughing.
想起他唱歌, 我就會忍不住笑起來。

在as if, as though, in case, even if等引導副詞子句中,表示與事實相反時,要用假設語氣。
Even if you laughed at me, I wouldn't give up.
即使你嘲笑我，我也不放棄。

表示假設語氣的副詞子句可以由with, without, but for等介系詞片語代替。
With his help, I would make more progress.
在他的幫助下，我會有較大地進步。

在wish后的子句用過去式表示與現在事實相反的假設;
Then I wish you were my first listener.
那么我希望你是我的第一個聽眾。

在wish后的子句用過去完成式表示與過去事實相反的假設。
I really wish I had not spoken like that.
我真希望我沒那樣講。