(一). It (completely) slipped my mind. 我一下子想不起來了。

原音重現：
A:Don't you have a dentist appointment today?
你今天沒有預約牙醫嗎？
B:Oh yeah! It completely slipped my mind.
啊，是啊！我給忘了。
英英釋義：
This means "I forget it." Usually this is said as an apology that the person didn't remember something.

(二).Let me remind you. 有事情要告訴你。/記住了。/我再說一遍。

原音重現：
A:Let me remind you that you need to clean your room.
別忘了打掃你的房間。
B:OK, Mom. I'll do it this afternoon.
知道了，媽媽。我今天下午就打掃。
英英釋義：
This is a way of making sure someone remembers something. It is similar to saying "Remember that..."
美劇表達：
1.Let me remind you that I am the boss here.
別忘了我才是這兒的老板。