Most nouns in English have both singular and plural forms. However, there are some nouns that are only used in the singular form. These are:
- Names of particular people, places, events, etc.
Peter, Johnson, Trafalgar Square, Easter, Saturday…
Although, you can use them in the plural if you think of them in a ‘countable’ way:
We never work on Saturdays.
The Johnsons are coming for lunch this evening.
- Most uncountable nouns: water, furniture, advice, hair…
Water is cold today.
Good advice is better than rubies.
- Some nouns ending in ‘S’: politics, Emirates, crossroads, measles, physics, maths,…
Emirates is charging for seat selection.
Politics is not my cup of tea.
How common is measles in your country?