By the way, when did you say this photo was taken?

对了，你说这张照片是在什么时候拍的？

youdao

If you have not heard what a caller said, it is much more polite to say "I'm sorry. Could you say this again, please?" than to simply say "What?"

如果你还没有听到打电话的人说了什么，更礼貌的说法是：“对不起。你能再说一遍吗？”而不是简单地说：“什么？”

youdao

You say this is what thing!

你说这是什么玩意儿！

youdao

When a person shares her feelings freely and openly like this, you might say she wears her heart on her sleeve, or on her clothing.

VOA: special.2010.07.11

How many grams of fat would you have-- would you say this has and how many calories?

你们认为这种食物有多少克脂肪,含多少卡路里

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So you say this to someone in order to make it happen.

所以你会向某人使用这个句型，来促使这事发生。

I can't help but 课堂 - SpeakingMax英语口语达人

You say this man has limited options, many of which are not in his best interest.

FORBES: Self Interest: The Most Life Enhancing Driver of Them All

Think about all the traits that would come to mind when you say this name.

FORBES: Which Is The Strongest Brand? Lindsay Lohan, TMZ or Penthouse?

And you say this is largely about power and how it's divided between the countries.

NPR: Marketplace Report: Wolfowitz's Anti-Corruption Plan