The operation could prolong his life by two or three years.

　　這次手術(shù)可使他多活兩三年。

　　Events could have developed in a dramatically different way.

　　事情本來可以發(fā)展成另一種樣子。

　　You could see from his face that he was lying.

　　從他的表情上你可以看出他在說假話。

　　Could you give me a bed for the night?

　　今晚你能給我弄個睡的地方嗎？

　　No one could have foreseen things would turn out this way.

　　誰都沒有預(yù)料到事情的結(jié)果會這樣。