ARTICLES A OR AN When do we use a and when do we use an ? In speaking, we use a /ə/ before a consonant sound: a car a house a big truck a wheel a grey day Warning: Some words that begin with a vowel letter in writing have a consonant sound: /ə ju:ˈnaɪtɪd …/ /ə ju:niˈvɜ:sɪti/ /ə wʌn …/ a united group a university a one-year-old child We use an /ən/ before a vowel sound: an apple an old shoe an orchestra an umbrella Warning: Some words that begin with a consonant letter in writing have a vowel sound: /ən aʊə(r) / an hour/ən empi: θ ri : …/ an MP3 player A one year old baby. PRESENT SIMPLE FORM
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