3. Review of the verb to be in present


AFFIRMATIVE FORM

Singular

It

is

Plural

They 

are

Example:     It is a lion. It's very fast

                   They are lions. They are very fast.


NEGATIVE FORM

Singular

It

isn't

Plural

They 

are

Example:     It isn't a lion. It isn't very fast

                   They aren't lions. They aren't very fast.


INTERROGATIVE FORM

Singular

Is

it ....... ?

Plural

Are

they .... ?
 Example:     Is it a lion ?

                    Are they lions?