Grammar fix

catch sight of

see briefly

to notice or see someone or something for a short moment, often unexpectedly.

collocationB1occasional

Hear it in context

Notice where the phrase sounds natural.

I caught sight of my friend across the crowded street.daily life
During my trip to the mountains, I caught sight of a deer running through the trees, which was a really special moment for me.IELTS speaking

Pattern: catch sight of + noun/pronoun

WrongI caught sight on him.

RightI caught sight of him.

'Catch sight OF someone', not 'on'.

Patterncatch sight of + noun/pronoun

Choose the version that sounds natural in speech.

Stiff I unexpectedly perceived him among the assembled crowd.

Natural I caught sight of him in the crowd.

'Unexpectedly perceived among the assembled crowd' is overwritten; 'caught sight of' is normal.

Words that usually travel with it.

Different from 'look at', which means to watch something on purpose.