“as good as gold”可不是“像黄金一样宝贵”，真实含义是（小孩）规规矩矩的；乖巧的。

【例句】
His son is as good as gold in the kindergarten.
他的儿子在幼儿园里很乖。

The boys were as good as gold on our walk.
我们散步的时候，这帮小男孩表现得很乖。