How do verbs change in interrogative and negative sentences?

How do verbs change in interrogative and negative sentences?

1. When there is a be verb (AM / is / are / was / were) in the sentence, it includes the structure of "tie Biao" and progressive tense. The variable negative sentence is formed by adding not after the be verb, that is, "subject + be + not + other elements.";
The formula is "be + subject + predicative +..." For example:
There was a modern building here last year
There was not a modern building here last year
Was there a modern building here last year?
When there is no be verb in a sentence, but there is a modal verb (can / may / must, etc.), when changing the negative sentence, add not after the modal verb, and the negative sentence structure is "subject + modal verb + not + original form of action verb + other components."; when changing the general question, just mention the be verb before the subject, and the formula is "modal verb + subject + original form of action verb + other components?"
He can buy you a camera in Sichuan
He cannot buy you a camera in Sichuan
Can he buy you a camera in Sichuan?
When there is neither be nor modal verb in the sentence, we should choose different auxiliary verbs according to the specific tense and person, The "formula" of general questions can be summarized as "auxiliary verb + subject + action verb (most tenses use the original form) + other components?" (verbs use past participles in complete tenses); when the above three situations need to change into special questions, use the formula "question + general questions?"