occur没有形容词形式。

The thought of resigning never occurredto me .我从来没想过要辞职。

Lassitude occurs early in the course of the disease .病初出现疲倦。

This deal occurred in a pairs event .这局牌是一次双人比赛中出现的。

A strong objection at once occurred to us .我们立刻遇到强烈的反对。