A: é usado antes de palavras começadas com uma consoante (exemplo: A boy) ou diante de som de consoante
(exemplo: a university).
An: é usado antes de palavras começadas com uma vogal (exemplo: An egg) ou diante de som de vogal (exemplo: An honor).
Supply A or AN.
1. There is ______________automobile in the garage.
2. Today is _______________ hot day.
3. My sister was in New York ___________year ago.
4. There is __________car in front of the church.
5. __________ woman is reading a book in the library.
6. They have forecast a lot of rain for the next few weeks. I need to buy ________ umbrella.
7. I eat _____ apple for breakfast every day.
8. I live in ______ old house near the centre of town.
9. I need _____ new calculator. This one is broken.
10. Have you ever seen a ghost? - No, I don't believe in ghosts.
Respostas
Resposta:
1. There is an automobile in the garage.
2. Today is a hot day.
3. My sister was in New York a year ago.
4. There is a car in front of the church.
5. A woman is reading a book in the library.
6. They have forecast a lot of rain for the next few weeks. I need to buy an umbrella.
7. I eat an apple for breakfast every day.
8. I live in an old house near the center of town.
9. I need a new calculator. This one is broken.
10. Have you ever seen a ghost? - No, I don't believe in ghosts.
Explicação:
Há uma regra bem simples: quando a palavra começa com um som de vogal (A, E, I, O, U), então, use ‘AN’ – você vai perceber que pronunciar essas palavras fica até mais fácil com ‘AN’. E o contrário: quando a palavra começar com som de consoante, use ‘A’.
Assim, você usa ‘a’ com: “A ball” (uma bola), “A glass of water” (um copo de água) e “A cup of coffee” (uma xícara de café). Com essas palavras, você usa ‘AN’: “AN umbrella” (um guarda-chuva), “AN ice cream” (um sorvete) e “AN apple” (uma maçã).