Yourself: Using Both Indefinite and Definite Articles
Now that you have reviewed the use of indefinite
and definite articles before nouns, you can test your knowledge
with this quiz. In the following paragraphs, decide which article
should be used before a noun, depending on a) whether the noun
that it precedes is countable or non-countable and b) whether
the noun has been identified to the reader. Select one of the
following to "fill in the blank": a, an,
some the, or no article. Click on the blank
space to see the correct choice and an explanation.
___ reaction was acidified, causing ___
release of carbon dioxide. Next, ___
carbon dioxide was evacuated from ___
Jenny poured ___
gels to use for electrophoresis. ___
gels were composed of two different concentrations: 8% and 12%.
___ 8% gels were placed
in ___ cold room overnight.
___ investigators have not yet enrolled enough patients
in ___ clinical trial.
___ tardy investigators
will be notified by ___
If you would like to see the entire paragraph
with all of the articles, click on each paragraph heading above
(for example, "Paragraph 1").