Grammar fix
main concern
most important worry
the thing you are most worried or focused about in a situation
collocationB1common
Hear it in context
Notice where the phrase sounds natural.
- My main concern right now is finding a new job.daily life
- When choosing a university, my main concern was the quality of the teaching staff.IELTS speaking
Fix the pattern
Pattern: main concern (of/for) + noun/pronoun
WrongMy main concern is about the cost.
RightMy main concern is the cost.
'My main concern is + noun' directly. ('I'm concerned ABOUT the cost' uses 'about', but 'concern is' doesn't.)
Patternmain concern (of/for) + noun/pronoun
Use it right
Choose the version that sounds natural in speech.
'My main concern is' is the natural set phrase. 'The principal matter causing me apprehension' is absurdly formal.
Build natural chunks
Words that usually travel with it.
main concernmy main concernis safetythe main concern israise concerns
Don't confuse it
'Main concern' is about the most important issue, while 'minor concern' means something less important.