not that I know of：是习语，也是口语。在句子中是一个独立成分。

意为“据我所知不是这样；据我所知没有”。

例如：

You are kidding, not that Iknow of.

您开玩笑，没那回事儿。

Not that I know of! It's not worthy of a movie!

据我所知还没有！这不值得拍成电影！

Mother: Not that I know of. I think the only one he's had was about five years ago.

母亲： 据我所知不是那样。我记得他唯一的一次注射大约是在五年前。

I was told that he failed in the test. Not that I know of.

听说他考试没通过。据我所知并非那样。

Are you going to Washington next month? Not that I know of.

下个月你去华盛顿吗？没这回事。

Eshiro: Not that I know of, I'm afraid.

江城：很遗憾至少我不清楚。

"Has he gone to Shanghai?"" Not that I know of. "

“他到上海去了吗?”“据我所知他并没有去。”

"No, not that I know of, " replied Mrs. Norris; "she was here a moment ago. "

“没有，我想没有吧，”诺里斯太太答道。“她刚才还在这儿。”

Under “Evidence of Pre-Existing Historical/Cultural Presence, ” he’s written, “Not that I know of.”

在“现场存在历史/文化遗迹的证据”一栏下面，他写着：“没有见到。”

I do not plan to take this as a future career, at least not that i know of . i don't plan to ever be famous, I do it for my own, and anyone else's entertainment, anyone willing to listen.

我没想把这当成未来的职业，至少现在是这样认为的。我也没想成名，只为了能让自己和听歌的人娱乐一下而已。