Present Simple con 'be'
El verbo 'be' es especial en inglés. A diferencia de otros verbos, cambia completamente en el Present Simple. Tiene tres formas: am, is y are.
Una vez que domines 'be', estarás listo para aprender sobre otros verbos en el Present Simple.
¿Cómo se forma el Present Simple con 'be'?
Oraciones afirmativas
El verbo 'be' tiene tres formas en el Present Simple: am, is, are. La forma que se utiliza depende del sujeto.
| Sujeto | Forma completa | Forma contraída |
|---|---|---|
| I | I am | I'm |
| you | you are | you're |
| he / she / it | he is / she is / it is | he's / she's / it's |
| we | we are | we're |
| they | they are | they're |
Ejemplos:
- I am a teacher.
- She is from Germany.
- They are happy.
- We're students.
- It's cold today.
Oraciones negativas
Para formar la negación, se añade 'not' después del verbo. Para la mayoría de los sujetos existen dos formas contraídas.
| Sujeto | Forma completa | Forma contraída |
|---|---|---|
| I | I am not | I'm not |
| you | you are not | you aren't / you're not |
| he / she / it | he is not / she is not / it is not | he isn't / she isn't / it isn't |
| we | we are not | we aren't / we're not |
| they | they are not | they aren't / they're not |
Ejemplos:
- I'm not tired.
- He isn't at home.
- They aren't ready.
- We're not late.
- It isn't expensive.
Preguntas
Para las preguntas, se coloca am / is / are antes del sujeto.
| am/is/are | Sujeto | Resto de la oración |
|---|---|---|
| Am | I | late? |
| Are | you | ready? |
| Is | he / she / it | here? |
| Are | we | on time? |
| Are | they | students? |
Ejemplos:
- Are you OK?
- Is she from Spain?
- Are they at school?
- Am I right?
- Is it difficult?
Respuestas cortas
En las respuestas cortas, usamos 'Yes, [sujeto] + am/is/are' o 'No, [sujeto] + am not/isn't/aren't'. En las respuestas cortas afirmativas no se usan formas contraídas.
- Are you ready? – Yes, I am. / No, I'm not.
- Is he here? – Yes, he is. / No, he isn't.
- Are they students? – Yes, they are. / No, they aren't.
Preguntas con Wh-
Se añade una palabra interrogativa (who, what, where, when, why, how) al principio de la pregunta.
| Palabra interrogativa | am/is/are | Sujeto | Resto |
|---|---|---|---|
| Where | are | you | from? |
| What | is | your name | ? |
| Who | is | that | ? |
| Why | are | they | late? |
| How | is | she | ? |
Ejemplos:
- Where are you from?
- What is your name?
- Who is that man?
- Why are they angry?
- How old is your brother?
¿Cuándo usamos 'be' en el Present Simple?
Ejercicios prácticos
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Downloadable PDF
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