释义：

　　know better than to 知道的比……多

　　know better than 表示“知道的比……多”，“最起码知道……”，换句话说就是“没有那么蠢”。than 后面可以接名词或 to+动词。

　　例句：

　　You know better than that.

　　你不至于那么蠢。

　　I know better than that.

　　该懂的我都懂了。

　　Of course, she knew better than to say this to her husband.

　　当然，她可没有蠢到把这些告诉她丈夫。

　　对话：

　　A: Your children are very well behaved.

　　你的孩子很有教养。

　　B: They know better than to act badly.

　　他们已经过了胡闹的年纪了。