it occurred to me

It occurred to me that today is her birthday.
我想起来今天是她的生日.

It occurred to me that… 我（突然）想起……
It +不及物动词+ that-分句
类似的还有：
It appears that… 似乎……
It happens that… 碰巧……
occur的意思有：
1. 发生
Earthquakes occur frequently in this area.
这一地区经常发生地震。
2. 出现;存在;被发现[Q]
Do giraffes occur in Africa only?
长颈鹿是不是只在非洲才有?
3. 被想起,被想到,浮现[(+to)]
It occurred to me to visit my teacher.
我想到要去看看我的老师。
It never occurred to me that he might be in trouble.
我怎么也没有想到他会遇上麻烦。
A brilliant idea occurred to me.
我想到一个极好的主意。
It didn't occur to him that she would refuse his invitation.
他没有想到她会拒绝他的邀请。

我想到了...

我想到了某事/人！

突然想到...