d'oh

* Definition
An exclamation that usually follows the sudden realization that you did something stupid.

* Example
1) Two plus two is five. D'oh! I mean four!

* Etymology
Homer Simpson, the notoriouscartoon family man, is given credit for popularizing this expression. Feel free to use it any time you do something dumb.

This is all new to me.
这一切对我都是新的经验。用在面对新事物时，表达自己什么都不懂的意思

A: This is all new to me, so let me know if I make a mistake.
这是我的第一次，所以错了请告诉我。
B: You're doing great so far.
目前为止你表现很好。