Count nouns have two forms: singular and plural.

Singular count nouns refer to one person or thing:

a book; a teacher; a wish; an idea

Plural count nouns refer to more than one person or thing:

books; teachers; wishes; ideas

Singular count nouns

Singular count nouns cannot be used alone. They must have a determiner:

the book; that English teacher; a wish; my latest idea

Plural forms

We usually add –s to make a plural noun:

book > books; school > schools; friend > friends

We add -es to nouns ending in –ss; -ch; -s; -sh; -x

class > classes; watch > watches; gas > gases; wish > wishes; box > boxes

When a noun ends in a consonant and -y we make the plural in -ies...

lady > ladies; country > countries; party > parties

…but if a noun ends in a vowel and -y we simply add -s:

boy > boys; day > days; play > plays

Some common nouns have irregular plurals:

Man > men; woman > women; child > children; foot > feet;
person > people

Plural count nouns do not have a determiner when they refer to people or things as a group:

Computers are very expensive.
Do you sell old books?




I would like to point out to one widespread mistake when it comes to qualifying the noun "people".
Everywhere, in the UK, in the US, here in Canada, and I am sure everywhere else, you hear people say "the amount of people", instead of "the number of people". Please, use the word "number" before the word "people", as people are a countable noun; we should not think of people as minced meat, should we.


I have a question regarding the word "crew" . I believe that crew is a collective noun however I found it in a vocabulary list written as "crews" with "s" . is that true ? and why ?

thank you

Hello Nour,

I can't explain the vocabulary list you have, but it might be helpful to think that although 'crew' is a collective noun, it is a count noun. For example, at a press conference we can speak of different TV crews -- the BBC crew, the Al-Jazeera crew, etc. They are different groups and so we use the word 'crew' in the plural.

Does that make sense?

All the best,
The LearnEnglish Team

Oh this is nice. as I know that "crew" means the "a group of people who work on and operate a ship". so we can use it as a group of people who work together in TV news channels ?


Hello NourSfieh,

Yes, that is correct. 'Crew' is used for the people who work on a ship, a plane, a spaceship and similar. It is also used for teams of people who make film and television programmes.


Best wishes,


The LearnEnglish Team


How about the words that end in -fe?

Knife > knives; wife > wives

Is that also a rule?

Hello TanniaLozano,

Yes, that is a rule for forming plurals with words ending in 'f' or 'fe'. However, there are some exceptions which need to be learned individually, such as roof (roofs).


Best wishes,


The LearnEnglish Team

sir, as u said that the comfort zone is a word combination .for example: 'the baby need a comfort zone'. In this sentence, instead of 'comfort' can we use 'comfortable'? does it change the meaning?

Hello Lavakusha,

Yes, as I suggested in my last comment, in general 'comfort zone' and 'comfortable zone' have different meanings. Please follow the link in my last comment to the definition and note there is an example sentence to illustrate the meaning. 'comfort zone' has a bit more to do with one's psychological state and 'comfortable' has more to do with one's physical state.

All the best,
The LearnEnglish Team

hello sir, is there a word called "comfortable zone(literally says comfort zone)" do exist or it is grammatically wrong.