“know better than”不能解释为“更知道”

【例句】She certainly knows better than to tackle such problems by herself.【误解】她当然更明白独自去解决这类问题。

【正确】她当然明白不能独自去解决这类问题。

【说明】know better than是固定用法，意思是“很懂得”、“明白事理（而不至于……）