“突然想到”常见的英文表达有：
1、 It suddenly occurred to me：这是较为正式和常用的表达。例如：It suddenly occurred to me that I had left my keys at home.（我突然想到我把钥匙忘在家里了。）
2、 It hit me suddenly：相对比较口语化。例如：It hit me suddenly that we hadn't made a reservation.（我突然想到我们还没订位子。）
3、 A thought suddenly crossed my mind：也是常用的表达方式。例如：A thought suddenly crossed my mind that maybe I should take a break.（我突然想到也许我该休息一下。）