"There is,I think we can say with certainty, that there is not much interest, this is an overstatement.

VOA: standard.2009.11.05

It's only to say that I can't escape the fact that the very first movement of mind, not the last movement but the first movement of mind, is interpretative.

只能说我不能回避的事实,是我思维的第一反应，不是最后反应而是第一反应，就是解读。

耶鲁公开课 - 文学理论导论课程节选

And I can't say that over the courses of our studying together, not that he became much better,

我想说在我和他一起学习的课上，不是他变得更好了，

留在记忆中的学生 - SpeakingMax英语口语达人

"I don't think anything there was a surprise. What the assessment says is basically, things are catastrophically bad in Afghanistan, which is,I'd say, objectively true, but that things are not unsalvageable, that we can turn this around as long as we stay dedicated to the appropriate strategy and fully resource that strategy.

VOA: standard.2009.09.22

Or you can say "I'm not sure that" when you are uncertain.

或当你没把握时，你可以用 "I'm not sure that"。

I'm sure 课堂 - SpeakingMax英语口语达人