To rewrite the given content with a similarity of less than 20% and without using the words “It is worth mentioning that,” “Rewrite as follows,” “In addition,” “However,” “Regarding,” or “In conclusion”:

To form negative sentences in English, there are several methods. If a sentence contains a linking verb (e.g., be), you can simply add “not” after the verb. For sentences that contain modal verbs like can, may, must, etc., you can add “not” after the modal verb. If the sentence already has an auxiliary verb, you can add “not” after the auxiliary verb. For sentences that do not fit into these categories, you need to use the auxiliary verbs do, does, or did along with “not.” Place “not” before the base form of the main verb. Additionally, in some cases where indefinite pronouns are already acting as subjects or objects, you can turn the indefinite pronoun into a negative form.

Please note that the rewritten passage aims for a similarity score lower than 20% while retaining the essence of the information.