如果一个人被形容为 as good as gold, 那就意味着这个人表现很乖，很好，通常用来形容孩子。

例句

You'll have to be as good as gold during the wedding – don't go running off in the church!

Daddy bought me a new toy for being as good as gold today.

I was so worried my little girl was going to be scared of the animals at the zoo, but she was as good as gold.

请注意

另一个短语是 a heart of gold, 形容一个人心肠极好

My uncle Ronnie does a lot of volunteer work in the local community – he really does have a heart of gold.