Stage 4 Subject-Verb Intro

As we've seen so far, in sentences with a 3rd person subject, the verb meaning "is" is est.

Caecilius est pater.
servus est in horto.

But when the subject is "I" (first person), the verb meaning "am" is sum.

ego sum maestra. = I am a teacher.
ego sum fessus. = I am tired.

When the subject is third person, the verb ends with -t.

Caecilius in tablino scribit.
filia in horto legit.

When the subject is "I" (first person), verbs (other than sum) end with -o.

ego in tablino scribo. = I write in the study.
ego in horto lego. = I read in the garden.

When the subject is "you" (second person), the verb ends with -s.

tu es discupula. = You are a student.
tu in atrio sedes. = You are sitting in the atrium.