Englishfor English speakers
A is used when the following word could be any of a certain type.
Compare "A book I saw on the shelf" and "The book I gave you yesterday".
A is the first letter of the alphabet.
The letter "a" comes before "b".
In some schools, an A is a very high grade.
Ron got an A on his earth science test.
A polite way of saying "woman".
Please direct this lady to the soft furnishings department.
The wife of a lord or a woman who holds the office in her own right.
Lady Diana was very popular with the British people.
A polite woman who is respected.
Mary, please try to act more like a lady in public.
If you are not ladylike, you will not be seen as a lady.
Someone who kills. Usually this mean someone who kills other people, and does not have a good reason to kill.
The police caught the killer today.
She was happy that her brother's killer was caught.
Something that kills.
Lighting can be a real killer.
Something that cause problems.
Failing the exam was a real killer.
Something that is very exciting.
The show was great, a real killer.
If something is killer it kills.
Watch out! There are killer bees!
The family barely got away from the killer storm.
If something is killer it is very good.
That was a killer show!