En inglés, el uso de las formas cortas es muy común, en particular se utilizan en el lenguaje coloquial y en situaciones informales.
Los verbos en el presente que tienen formas cortas son "to be" (ser/estar) y "to have"/"have got" (tener). "To do" (forma auxiliar) tiene una forma corta, pero sólo en el negativo.
| Afirmativo | Forma corta | Negativo | Forma corta |
| I am | I'm | I am not | I'm not |
| You are | You're | You are not | You're not/You aren't |
| He is | He's | He is not | He's not/He isn't |
| She is | She's | She is not | She's not/She isn't |
| It is | It's | It is not | It's not/It isn't |
| We are | We're | We are not | We're not/We aren't |
| They are | They're | They are not | They're not/They aren't |
| Afirmativo | Forma corta | Negativo | Forma corta |
| I have | I've | I have not | I've not/I haven't |
| You have | You've | You have not | You've not/You haven't |
| He has | He's | He has not | He's not/He hasn't |
| She has | She's | She has not | She's not/She hasn't |
| It has | It's | It has not | It's not/It hasn't |
| We have | We've | We have not | We've not/We haven't |
| They have | They've | They have not | They've not/They haven't |
Nota: Para "have got" solemos usar la forma corta en el presente en vez de la forma larga. No usamos la forma corta de "to have" para indicar posesión. Veremos ejemplos del uso de la forma corta de "to have" en la lección del presente perfecto.
| Negativo | Forma corta |
| I do not | I don't |
| You do not | You don't |
| He does not | He doesn't |
| She does not | She doesn't |
| It does not | It doesn't |
| We do not | We don't |
| They do not | They don't |
Nota: Hay más información sobre el uso del auxiliar en las lecciones sobre construir frases y los verbos
| Forma larga | Forma corta |
| What is | What's |
| Who is | Who's |
| When is | When's |
| Where is | Where's |
| How is | How's |
| Here is | Here's |
| There is | There's |
| That is | That's |
Nota: Existen más formas cortas con otros tiempos verbales. Las veremos en las lecciones correspondientes.
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