A1. We use Indefinite Article 'a' or 'an':
a. with singular countable nouns to say what kind of thing or person is. (e.g. You're such a hard worker.)
b. use 'a’ or ‘an' before singular countable noun when we talk about it the first time. (e.g. When we were on holiday, we stayed at a hotel. Sometimes we ate at the hotel and sometimes we went to a restaurant.)
c. Generally, we use ‘an’ (not ‘a’) before a/e/i/o/u (e.g. a watch, an idea)
d. We use 'a’ or ‘an' to say what someone is or what job they do. (e.g. My brother is a teacher)
e. use 'a’ or ‘an' to show the person or thing is one of a group (e.g. He is a student at London University), and to say something about all things of that kind (e.g. A whale is an animal.)
f. say that somebody has a long nose/ a nice face/ blue eyes (a part of body) (e.g. He has a nose for a good script.)
g. use Indefinite Article as 'as per': once a week, twice a day, $10 a pound, etc.
Idiom 365
kick the bucket: Die, Pass away
Example: When I kick the bucket, you can just bury me under a tree.