In positive imperative, we use the base verb.
Example:
“Collect the organic rubbish!”
It means we want someone to collect the rubbish.
The negative imperative sentences tell someone not to do something.
Example: “
Do not forget to wash your hands!” or “Don’t forget to wash your hands!”
It means we want someone to not forget to wash their hands.
In this sentence, we want someone to not forget to wash their hands.
b. Read the text in Section 3 again, and underline the imperative expressions.