Grammar fix
come to think of it
reflecting / realising (spoken)
Used when you suddenly remember or realise something while speaking, often to add or correct information.
Hear it in context
Notice where the phrase sounds natural.
- Come to think of it, I did see her at the supermarket yesterday.daily life
- Well, I usually prefer to study at home, but come to think of it, I actually get more done when I’m at the library because there are fewer distractions.IELTS speaking
Fix the pattern
Pattern: Come to think of it, [clause]
WrongCome to think about it, I left it at home.
RightCome to think of it, I left it at home.
Fixed phrase — 'come to think OF it', not 'about it'.
PatternCome to think of it, [clause]
Use it right
Choose the version that sounds natural in speech.
'Upon further reflection' is formal/written; 'come to think of it' is the spoken realisation marker.
Build natural chunks
Words that usually travel with it.
come to think of itcome to think of it,actually, come to think of itnow, come to think of it
Don't confuse it
Unlike 'on second thought', which can signal a change of mind or decision, 'come to think of it' is used to introduce a new idea or detail that has just occurred to you.