When to use be (the prototype of AM is are) in English

Can, may, should, could, will, have to, etc

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1. What do you mean by be and am is are
2. The usage of AM is are in English
3. Am (plural)_____ Come on, will you?
4. What is the plural of is?
5. Which can be used in the plural form TOM and I ___ good friends
6. The plural form of is / am this that ciass bus
7. The plural of AM; is
8. They are girls she is my sister
9. she is a teacher.
10. 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,
11. In English sentences, when to use be and when to use am is are
12. It is not am is are, but be You would be much better now if you Be in detail
13. Be verb is.am.are Which words do they use? Which form? (if it is missed, it will not be counted as a score) It is to write out all the words that use is am are and classify them according to the different usages of be verb in 3,
14. What are the rules of plural change of nouns and tense change of verbs?
15. What are the nouns, verbs and adjectives of the English word "organization"
16. English words about crime should have nouns, verbs and adjectives For example, the noun verb adjective steal the steal thief
17. The usage of verbs, nouns, adjectives and prepositions in English words
18. How to distinguish English words from adjectives, verbs and noun adverbs
19. English translation Three beautiful lights, a picture of my family, enough warm clothes Wear (synonym) Glad (a synonym) Rain (same pronunciation, 5) What is the present participle?
20. English translation For writing a composition I can play erhu Quick, erhu or urheen What is Mao