Correct use of article a/an
The article a placed in front of a noun conveys the idea of one. When writing about two separate objects, a second a must be used. If the two objects are considered as one, then the second a may be left out.
- Incorrect: I have a hammer and chisel.
- Correct: I have a hammer and a chisel. (Here we are talking about two separate objects.)
- Incorrect: She has a son and daughter.
- Correct: She has a son and a daughter.
- Incorrect: The mechanic used a block and a tackle to lift the machine.
- Correct: The mechanic used a block and tackle to lift the machine. (Here we are talking about one object.)
Search the Dictionary of Practical English Usage
Acronyms and initialisms New!
Above and over
Accept and agree
Adverbs with two forms
Affect and effect
All and every
Already, just and yet
All and whole
A lot of, lots of, plenty of, a large amount of, a great deal of
Already and all ready New!
Alternate and alternative
Although and though
Amount and Number: differences New!
Anyhow and somehow
Articles - Rules for the use and omission of articles
Article A / an
As, because, since and for
As if and as though
As and though
Ask and ask for
As well as
As well as grammar
As well as grammar exercise
As, when and while
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