Present Tense: To be (negative form)
"To be" in the negative form describes qualities or characteristics that a person or thing does not possess.
"To be" in the Negative Form
To talk about what something is not, simply put the word “not” right after the conjugation of “to be”.
There are two options to make contractions in the negative form:
1. Combine the pronoun and verb “to be” into a contraction. Then add “not” as a separate word.
2. Leave the pronoun alone, and combine the verb with the word “not”.
For the first person “I am not”, there is only one option to form a contraction: “I’m not”