1/occasion释义：

n. 时机，机会；场合；理由

2/例句：

In such an emergent occasion, I had to jump out of the car.

3/occasion后面可以用下列介词：

on the occasion在那时；值此…之际

special occasion特别的时刻；特别的场合

Occasion.后面一般应该用介词on。

后面用介词of，例如：

1.He was presented with the watch on the occasion of his retirement.他在退休时获赠这块手表。

2.Her death was the occasion of mass riots.她的逝世引发了大规模的骚乱。

3.The wedding was an occasion of great festivity.这个婚礼是喜庆盛事。