I forgot to pick up my dry cleaning! 我忘了要去洗衣店拿衣服。
I just forget to return his call. 我忘給他回電話(huà)了。
Excuse me? You forgot to give me my receipt. 打擾一下,你忘了給我收據(jù)了。
Why didn't you prepare a report? 你為什么沒(méi)寫(xiě)報(bào)告?
It's my fault. I forgot to do it. 是我的錯(cuò),我忘了。