- 我对这个计划一无所知。
I am quite ignorant of the plan.
- 他几乎对那个动物一无所知。
He knows almost nothing about that animal.
- 是的，据我所知是这样。
Yes, as far as I know.
- 据我所知，他从来没有犯过这样的错。
As far as I know, he has never made such a mistake.
- 据我所知，他是一个诚实的人。
So far as I know, he is an honest man.
- 据我所知，他没做错任何事。
As far as I know, he did nothing wrong.
- 据我所知，这本书从来没有被翻译成日文。
As far as I know, the book has never been translated into Japanese.
- 据我所知，这里是整个湖最深的地方。
To the best of my knowledge, the lake is the deepest here.
- 就我所知，他是个很用功的学生。
He is an industrious student to the best of my knowledge.
