It?slipped?my?mind_初級英語口語

It slipped my mind that I had an appointment with my teacher.

我忘記了我和我的老師有約。

slip指溜走，滑動。slip one's mind表示（某人）忘記某東西,通常都是用虛主語it加slip one's mind再加that來引導(dǎo)出忘記的事。

It slipped my mind that I had to turn in my homework by ten.
我忘記了我必須在十點前就交作業(yè)。