SpeakUp

Grammar fix

main reason

most important reason

The biggest or most important reason for something happening or for a decision.

collocationB1common

Hear it in context

Notice where the phrase sounds natural.

  • The main reason I moved to this city was for a better job.daily life
  • The main reason I prefer public transport is because it’s more convenient and better for the environment.IELTS speaking

Fix the pattern

Pattern: the main reason (for something) is/was...

WrongThe main reason of leaving was the pay.

RightThe main reason for leaving was the pay.

'Main reason FOR' something — not 'of'.

Patternthe main reason (for something) is/was...

Use it right

Choose the version that sounds natural in speech.

Stiff The principal motivation behind my decision was financial.

Natural The main reason was money.

'Main reason' is the plain everyday phrase; 'principal motivation' is essay-formal.

Build natural chunks

Words that usually travel with it.

  • the main reason + for/why
    forwhybehindis that

Don't confuse it

‘Main reason’ is stronger and clearer than just ‘a reason’ or ‘an important reason’.

Try it in Daily Speak →