Grammar fix
common sense
practical judgment
The natural ability to make good decisions and behave in a sensible way in everyday situations.
collocationB1common
Hear it in context
Notice where the phrase sounds natural.
- It’s just common sense to lock your doors when you leave the house.daily life
- In my opinion, common sense is more important than academic knowledge in many everyday situations, because it helps people solve problems quickly.IELTS speaking
Fix the pattern
Pattern: noun (uncountable); have/use/show common sense
WrongHe has a good common sense.
RightHe's got good common sense.
Uncountable — no 'a'.
Patternnoun (uncountable); have/use/show common sense
Use it right
Choose the version that sounds natural in speech.
'Exercise prudent judgment' is formal; 'use common sense' is what people actually say.
Build natural chunks
Words that usually travel with it.
common senseusegoodlackbasic
Don't confuse it
Not the same as 'knowledge' or 'intelligence'; common sense is about practical decisions, not facts or academic ability.