I have to protect you as you are my sister.
Used to describe two things happening at the same time or something happening at a particular time. He was shot in the back as he tried to escape.
This year, as in previous years, tickets sold very quickly.
Angry as he was, he couldn't help smiling.
The first letter of the English alphabet. The word 'apple' starts with the letter 'a'.
In Western music, the sixth note in the scale (= series of notes) that begins on the note C, or a set of notes based on this note. The song begins with a note of 'A'.
A grade given to students for excellent performance. She received an 'A' on her final exam.
A blood type in the ABO blood group system. He has type A blood, which is compatible with type O.