Grammar fix

special occasion

important event

A special event or time that is celebrated or remembered because it is important or meaningful.

collocationB1common

Hear it in context

Notice where the phrase sounds natural.

We usually go out for dinner on special occasions like birthdays and anniversaries.daily life
In my country, people often buy new clothes for special occasions such as weddings or important festivals.IELTS speaking

Pattern: on/for a special occasion; special occasion + noun

WrongWe only drink it in special occasions.

RightWe only drink it on special occasions.

Use 'ON special occasions', not 'in'.

Patternon/for a special occasion; special occasion + noun

Choose the version that sounds natural in speech.

Stiff We reserve this wine for events of particular significance.

Natural We save this wine for special occasions.

'Special occasion' is the set phrase; the paraphrase is stiff.

Words that usually travel with it.

special occasion + use
on special occasionsfor a special occasiondress formark

Do not confuse with 'regular day' or 'everyday event,' which are not special occasions.