It is a two-line Poem, (which is probably for little children).
= "When a verb is in the Negative Form, and uses the negative word �NOT �,
"We add the word �DO �, to make the sentence complete."
An EXAMPLE
Positive Form: "I like bananas."
Negative "I not like bananas." This is not correct English.
Negative Form "I do not like bananas". This IS CORRECT ENGLISH.
I hope that this helps you.
Les Douglas