“be so kind as to”是什么意思及用法

be so kind as to 意思：劳驾。

用法：

How very kind of you to say so .非常感谢您这么说。

It 's very kind of you to say so .你这样说真是太好了。

This has been so nice, so terribly kind of you.您这么做真是太好心，太令我们感激不尽了。