Tybalt is a person. Tybalt is Juliet’s cousin. Since Juliet is a Capulet, Tybalt is also a Capulet. Romeo stabs Tybalt, which causes Romeo to be banished from entering Verona again.
Immediately because Anthony "immediately" changed how he normally feels.
A signal word is a word that indicates a connection between ideas.
ALS is like a lit candle: it melts your nerves and leaves you a pile of wax.