The use of articles

A countable noun (when singular) always takes either the indefinite (a, an) or definite (the) article. But when plural, it takes the definite article if it refers to a definite, specific group and no article if it is used in a general sense. For example,

• The student arrived late.
• You are welcome as a student in our city
• The students at your university seem happy.
• Students are welcome here anytime.

Uncountable nouns never take the indefinite article (a or an), but they do take singular verbs. The is sometimes used with uncountable nouns in the same way it is used with plural countable nouns, i.e, to refer to a specific object, group, or idea.

• Oil is a precious commodity in our world.
• The oil in your in your car needs changing.
• Salt has become more expensive recently.
• Please pass me the salt.

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After viewing the video lecture, check you understanding with these self check quizzes  
articles & nouns       &      Countable & uncountable nouns

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