Grammar fix

find out

discover information

To learn something that you did not know before, especially by asking, searching, or being told.

phrasal verbB1core

Hear it in context

Notice where the phrase sounds natural.

I need to find out what time the train leaves.daily life
In my last job, I had to find out a lot of information about different countries for our clients.IELTS speaking

Pattern: find out + (about) [noun phrase] / find out + (that) [clause]

WrongI found out my keys under the sofa.

RightI found my keys under the sofa.

'Find out' is for facts/information; locating a physical object is just 'find'.

Patternfind out + (about) [noun phrase] / find out + (that) [clause]

Choose the version that sounds natural in speech.

Stiff I would like to ascertain the departure time.

Natural Let me find out when it leaves.

For getting a fact, natives say 'find out'. 'Ascertain'/'determine' are correct but sound formal or bureaucratic in speech.

Words that usually travel with it.

'Find' means to locate something physically, while 'find out' is about learning new information.