题目内容：

he is old enough to know better than to spend all her money on fancy food
这句话里的better than 怎么会有这个用法的,

优质解答

know better than:vt.很懂得(具有充分智慧)例句与用法:1.I know better than that!我才不信呢!2.I know better than to go swimming after dinner.我不致笨得吃过饭就去游泳.3.Go on with you!I know better than th...