Grammar

Articles: a, an and the

1,350 fill-in-the-gap exercises across 3 forms

The choice is between a, an, the and nothing. It depends on two things: whether the noun can be counted, and whether the reader already knows which one you mean.

Pick a form to practice

Two questions decide it

1. Can you count the noun? One book, two books — countable. Water, advice, money — uncountable, and they have no plural and never take a or an.

2. Does the listener already know which one? If yes, use the. If not, use a or an for a single countable noun, or nothing for plurals and uncountables.

a or an

The choice depends on sound, not spelling:

A university and an hour are the pair worth remembering: the first letter is not what matters.

the

Use it when the reader can identify the thing:

no article at all

This is the option learners forget, because many languages do not have it. Use nothing for:

Compare at school (as a pupil) with at the school (at that building).

Nouns that are uncountable in English

These catch almost everyone, because they are countable in many other languages:

advice, information, news, furniture, luggage, equipment, research, knowledge, progress, work, money, bread, traffic, weather, homework

None of them takes a, and none has a plural. To count them, add a phrase: a piece of advice, two pieces of furniture, a bit of news.

All forms

NounFirst mentionAlready knownGeneral
singular countablea dogthe doga dog / dogs
plural countabledogsthe dogsdogs
uncountablewaterthe waterwater

Mistakes to avoid

Wrong: I need an advice. correct: I need some advice.

Advice is uncountable, so it cannot take a or an.

Wrong: She is engineer. correct: She is an engineer.

A job title after be takes a or an in English.

Wrong: I have a informations. correct: I have some information.

Information is uncountable and has no plural.