“You could have told anyone, up and down on the street.”
你本可以告诉街上任何一个人。
一句责备里藏着最锋利的追问:当时明明有那么多条路。
You could have done something.
事后指出对方本可以怎么做时用;对上级或长辈说会显得冒犯。
You could have said something. / You had every chance to speak up.
口语
could have 轻快带过,told anyone 连读,句尾放平。
You could have warned me before I signed it. 签字之前你本可以提醒我一下。