What's the use of auxiliary verbs and be verbs in a sentence in English?

Auxiliary verbs are used when negating and questioning in sentences with notional verbs or action verbs. In negative sentences, not is added after it. In interrogative sentences, the auxiliary verb is mentioned at the beginning of the sentence, followed by the verb prototype,

RELATED INFORMATIONS

1. In English sentences, when to use the be verb, when to use the auxiliary verb, and when not to use it
2. When to use do does and when to use copulars such as is are For example: 1. Why does Mrs. Li's cat stop catching mice? Do you use do or is? Have you cleared your luggage? How to say it? Why use have? It's better to talk about when and what to use? isn't －－－－catching－－？ Who can explain to me why
3. What are action verbs, modal verbs, linking verbs, auxiliary verbs and copulars in English?
4. What do English transitive verbs and intransitive verbs mean, auxiliary verbs?
5. What are auxiliary verbs, modal verbs, connective verbs and examples in English
6. In English interrogative sentences, how to judge the use of verbs or auxiliary verbs?
7. The use of be verbs (am, is, are) I want to ask passers-by to help_____ thirsty. 2.Those children_____ tired. 3.Their mother_____ tired,too. 4.That ice cream man____ very busy. 5.His ice creams____ very nice. 6.What's the matter,children?We____ thirsty. 7.What's the matter,Tim?I_____ tire If you want to answer, please write my serial number on the side,
8. Fill in the blanks with the verb be (am, is, are) 1.She____ a teacher.Her name ____ mary. 2.I ____ a boy.My name ____ Li Ming. 3.____ you teacher?No,we ____ students. 4.My favorite color ____ blue. 5.It ____ a bird.Its name ____ Polly. 6.Tom's brother ____ not in the room. 7.These books ____ bule.They ____ English books. 8.Li Lei ____ at school today .He ____ drawing a picture now. 9.Amy and Kay ____ here.They ____ not at home .
9. What is added after the past tense of be verb (i.e. am, is, are) Is it the present participle (verb ing), the original form or the past tense? Or something else Sorry is what is added after the past tense (was, were) of the verb be
10. I can't tell when to use the auxiliary verb do and when to use the be verb is are, I do not always use computer Is there any formula or skill to distinguish Why is I am not always using computer wrong
11. Is it possible to use the auxiliary verb do / does instead of be when there are verbs in a sentence? Answer yes or no, speed up
12. When do you use the be verb and the auxiliary verb in English,
13. The usage of be verb and auxiliary verb The usage of be verb and auxiliary verb in declarative sentence, interrogative sentence and negative sentence is concise
14. The construction of the verb be
15. The usage of be verb and auxiliary verb I just want to ask When to use the auxiliary verb and when to use the be verb When there is a verb, is it a be verb or an auxiliary verb
16. When to use do / does and when to use the verb be?
17. Is or are in the third person plural?
18. Is the predicate used in a sentence with the same form in the singular and plural For example, there () some water. Please give more examples,
19. she is a teacher.
20. They are girls she is my sister