<o:ent xmlns:o="http://oup.dataformat.com/doc/OUP_DTD_Dictionary.html" sortkey="a" url="x3684931">
<o:hwGrp>
<o:hw>a</o:hw>
<o:vhw>an</o:vhw>
</o:hwGrp>
<o:SB url="x3684934">
<o:sense url="x3684932" status="Active">
<o:xrefGrp>
<o:xref>See note below.</o:xref>
</o:xrefGrp>
</o:sense>
</o:SB>
<o:specialFeature url="x3684933" type="usage_notes">
<o:oup_head>a, an</o:oup_head>
<o:oup_body>
<o:paragraph>The indefinite article <o:render as="italic">a</o:render> is used before words beginning with a consonant sound, including /y/ and /w/ sounds. The other form, <o:render as="italic">an</o:render>, is used before words beginning with a vowel sound. Since the sound rather than the letter controls, it's not unusual to find <o:render>a</o:render> before a vowel or <o:render>an</o:render> before a consonant. Hence: <o:render>a European country</o:render>, <o:render>a one-year term</o:render>, <o:render>an FBI agent</o:render>, <o:render>an MBA degree</o:render>.</o:paragraph>
</o:oup_body>
</o:specialFeature>
</o:ent>