“It's polite,"said the Queen, "to say thank you for all this information."

="It's polit to say thank you for all this information," said the Queen.0

to say thank you for all this information；句子中 thank you for…… 前面省略了to吗？

解答如下：

你的理解有误，表示这样的，这个属于，宾语内容倒装结构，调整语序并还原后为下面句子。（你可以把said the Queen当插入语理解）

The Queen said ( that) it is polite to say (that) thank you for all this information.

参考译文：女王所，对所有这些信息所谢谢你是有礼貌的行为。

(以上句子结构实际上是：sb said it is polite to say thank you for sth)

(it is polite of sb to do sth 某人做某事是有礼貌的)

    “It's polite,"said the Queen, "to say thank you for all this information."

="It's polite to say thank you for all this information," said the Queen.句子中 thank you for…… 前面不能加to。因为thank you for all this information是一个完整的句子，作 say 的宾语。to say thank you for all this information是动词不定式短语作真正的主语，It 是形式主语。