negative be verbs
1 The verb “to be” is one of the most useful and most used verbs in any language. Since we use it to give information and to correct information, it is very important to be able to use “to be” correctly. This could mean the difference between saying “I am allergic to nuts” and “I’m not allergic to nuts”. While most situations will not be as life-threatening as an allergy, it is still important to know how to form negatives correctly. https://convoenglish.co/simple-present-tense-negative-be-verbs/