Can 可以表達下列三種語意:
能力判斷 → You can do it. (=You are able to do it.)
許可的態度 → You can leave now. (=You are allowed to leave.)
可能性的推敲 → You can be wrong. (=It is possible that you are wrong.)
這三個語意是息息相關的,有能力才有意願,有意願等於有認可,有認可才有可能發生。這些詞的多義性其實是彼此相通的。
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