I'm sorry I have not been able to reply sooner.

迟于作复，歉甚。

《新英汉大辞典》

No, I have not been in London.

不，我没去过伦敦。

youdao

I have not been coerced in anyway.

我没有被任何方式所哄骗。

youdao

Since I have not been informed that South Carolina declared war on the United States, I can only believe that this hostile act was done without your knowledge or permission.

VOA: special.2009.07.23

No, I have not been in London.

不，我没去过伦敦。

耶鲁公开课 - 心理学导论课程节选

But that's maybe not every Korean student, but the ones I had have been like that.

也许不是每个韩国学生都这样，但是我的学生是这样的。

中国学生的特点 - SpeakingMax英语口语达人

" I said: "I have not been told and do not know the true position.

BBC: [an error occurred while processing this directive]

In fact, I have not been able to find any record or trail of it.

NPR: Big Technology A Threat To Small Businesses?

If a favorite of yours is missing, it is probably because I have not been through it.

FORBES: 10 Best Airports: A Subjective View