我哪知道你在等我？

How was I supposed to know you were waiting for me?

《牛津词典》

我当然很抱歉，但我怎么知道你在抽屉里呢？

Of course I'm very sorry, but how could I know you were in the drawer?

youdao

“我没有在电话里告诉你，”她说。“我不知道谁会在听。”

"I didn't tell you over the phone," she said. "I didn't know who might be listening."

《柯林斯英汉双解大词典》

Where were you? -Sacramento, California, Memorial Auditorium I knew when he was done, this brother is for real.

你当时在哪里？加利福利亚，萨克拉门托的纪念堂,我只知道，这个人非常认真。

普林斯顿公开课 - 人性课程节选

And you've asked several people on the street . "I just can't get there! I don't know where I'm going!" and

你在街边向几个行人问路。“我没法找到目的地了，我不知道该怎么走！”

How long课堂 - SpeakingMax英语口语达人

Tell me I think you do a few case studies in this book or this grounded in different communities.

不妨讲讲，我知道你在书里做了些个案研究,或者说是在不同群体中做的。

普林斯顿公开课 - 人性课程节选