I have forgotten what I have learned.

我忘记了所学的东西。

youdao

I have forgotten her.

我已经忘记她了。

youdao

Are you sure you locked the gate? You could easily have forgotten.

你肯定锁上大门了吗？你很可能是忘了。

《牛津词典》

People seemed to have forgotten the political problems that shook his administration.

VOA: special.2010.04.22

Now in 1644 when he wrote the Areopagitica, Milton may have forgotten that Spenser's Guyon did in fact descend in to hell without the help of his teacher, the palmer.

644年他在《论出版自由》中写道，弥尔顿可能忘记斯潘塞笔下的盖恩事实上是在,没有自己的老师朝圣者的帮助下进入贪神之洞的。

耶鲁公开课 - 弥尔顿课程节选

I must have forgotten to set my alarm.

我肯定是忘记设闹钟了。

Must 实战 - SpeakingMax英语口语达人

But with the spotlight on Milk's legacy, author Weiss worries that history may have forgotten Moscone.

NPR: The Moscone-Milk Anniversary �� And Legacy

Most likely, your parents or grandparents were immigrants at one time, but you have forgotten that.

CNN: SHARE THIS

For those who have never known one, or those who have forgotten, here they are.

WSJ: How to Enjoy Lousy Baseball