The verb 'to be' is very important in English. We use 'am', 'is', and 'are' to talk about who someone is, how someone is, or what something is. For example:
I am a student.
She is happy.
They are friends.
Singular Forms of "To Be" (1)
adj.
1
singul…
pron.
I
verb
am
pron.
you
verb
are
pron.
he
pron.
she
pron.
it
verb
is
Use 'am' with I. Use 'is' with he, she, it, or one person or thing.
Singular Subject (1)
'To Be'
Example
I
am
I am a student.
you (singular)
are
You are my friend.
he
is
He is happy.
she
is
She is happy.
it
is
It is a cat.
Tom
is
Tom is a student.
Kim
is
Kim is a teacher.
I am a student.
You are my friend.
He is happy.
She is happy.
It is a cat.
Tom is a student.
Kim is a teacher.
Plural Forms of "To Be" (2+)
adj.
2+
plural
pron.
we
pron.
you
pron.
they
verb
are
Use 'are' with you (plural), we, they, or more than one person or thing.