occur to sb
(of an idea or a thought 观念或想法) to come into your mind 被想到；出现在头脑中
The idea occurred to him in a dream.
这个主意是他在梦中想到的。
occur to sb that…
It didn’t occur to him that his wife was having an affair.
他没有想到自己的妻子有婚外情。
~ to do sth
It didn’t occur to her to ask for help.
她没想到请别人帮忙。