could have been

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could have been

本可以是
Mistakes are creeping in which could have been avoided.
本可避免的错误都逐渐一一发生了.
It could have been worse.
事情可能更坏,这是不幸中的大幸.
The performance could have been better.
这次表演原来可以更好些的.

可能、已经.,表示对过去的猜测。
望采纳,谢谢~

“本可以成为某事物而没有成为”,属于虚拟语句的用法。可以表示遗憾、谴责的语气。
例如: i could have been the prize winner. 意思是我本可以成为获奖者的,但是事实上我没有。

可能已经怎么怎么了,表虚拟