Use of the simple present of to be
The principal use of the simple present is to refer to an action or event that takes place habitually, but with the verb "to be" the simple present tense also refers to a present or general state, whether temporary, permanent, or habitual.
- I am happy.
- She is helpful.
The verb to be in the simple present can be also used to refer to something that is true at the present moment.
- She is 20 years old.
- He is a student.
Affirmative forms of the verb to be
| Subject Pronouns | Full Form | Contracted Form |
|---|---|---|
| I | am | 'm |
| you | are | 're |
| he/she/it | is | 's |
| we | are | 're |
| you | are | 're |
| they | are | 're |
Interrogative forms of the verb to be:
| Am | I? |
| Are | you? |
| Is | he/she/it? |
| Are | we? |
| Are | you? |
| Are | they? |
Negative Forms of the verb to be:
| Subject Pronouns | Full Form | Contracted Form |
|---|---|---|
| I | am not | 'm not |
| you | are not | aren't |
| he/she/it | is not | isn't |
| we | are not | aren't |
| you | are not | aren't |
| they | are not | aren't |
Examples:
- Is Brad Pitt French?
- No, he isn't. He's American.
- What about Angelina Joli? Is she American, too?
- Yes, she is. She is American.
- Are brad Pitt and Angelina Joli French?
- No, They aren't. They are American.
Enlace
https://www.grammar.cl/Present/To_Be.htm
https://www.english-4u.de/en/tenses-exercises/verb-to-be.htm



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