Question

1) Complete the sentences using the indefinite article a or an, if necessary:
a) I’ve been waiting for ________ hour. What ________useful thing to do!
b) ______ apple tree is tall and it has __________ unique smell.
c) What __________ interesting story!
d) Mom asked us to buy _________ hat for her.
e) Is your husband ________ Irish or _________ Iranian?
f) It’s ________ honor to have you among my friends.
g) She bought ______ used car from _______old man. But he seemed ______honest
person.
h) Mrs. Thompson is _______ doctor. She prescribed me _______expensive medicine.
i) My brothers are _________famous artists.
j) My parents have gone abroad once _________ year.

Answer 1

-Resposta-

a. I've been waiting for an hour. What an useful thing to do!

b.  An apple tree is tall and it has an unique smell.

c. What an interesting story!

d. Mom asked us to buy a hat for her.

e. Is your husband Irish or Irianian -não precisa

f. It's an honor to have you among my friends

g. She bought a used car from an old man. But he seemed like an honest person

h. Mrs.Thompson is a doctor.

i. My brothers are famous artists. -não precisa

j. My parents have gone abroad once a year

-Explicação-

O "a" é utilizado quando a primeira letra da palavra é uma consoante, ou é pronunciada como uma (como em used, onde o u é pronunciado como you).

O "an" é utilizado quando a primeira letra da palavra é uma vogal, ou uma consoante muda (o que é o caso de hour).