Events could have developed in a dramatically different way.

　　事情本來可以發展成另一種樣子。

　　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.

　　誰都沒有預料到事情的結果會這樣。

　　The resources at our disposal could have been better utilized.

　　我們所掌握的資源本來可以利用得更好，獲得更高的效益。

　　You could tell she was foreign by the way she dressed.

　　從她的穿著就可以看出她是外國人。