"I learned you can heat chicken feathers and use it as hydrogren to replace gas in your car."

VOA: standard.2010.04.25

Let me give you one other anecdote that I can't resist. This is the kind of thing you can use at cocktail parties to impress your friends from Harvard. OK.

让我再告诉一个秘密吧,这事儿在鸡尾酒会上,你能用来唬唬,哈佛的那帮人，好。

麻省理工公开课 - 计算机科学及编程导论课程节选

You can also use the "I didn't" pattern to express that the result was not the same as your intentions.

你也可以用“I didn't”句型来表达事情的结果并不是你的本意。

I didn't 课堂 - SpeakingMax英语口语达人

In the next example you can use "I'm sorry" not to express regret for your personal fault.

下一个例句中，“I'm sorry”的使用并不是用来表达对个人过失的抱歉。

I'm sorry 课堂 - SpeakingMax英语口语达人

Instead of being very direct, you can use "I don't know" to soften your response slightly.

但你不想说得那么直接，你可以用“I don't know”来让你的回答更为委婉。

I don't know 课堂 - SpeakingMax英语口语达人

We can use the "I need" pattern to express your need for something, of course,

我们可以用“I need”句型来表达我们对某些东西的需求，当然，

I need 课堂 - SpeakingMax英语口语达人