https://online2.tingclass.net/lesson/shi0529/0008/8532/p60.mp3
https://image.tingclass.net/statics/js/2012
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(dòng)。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(diǎn)前就交作業(yè)。
