EL VERBO TO BE (SER/ESTAR)

EJERCICIOS PARA PRACTICAR EL VERBO TO BE

Meaning and inflection acording to subject - Significado y flexión de acuerdo al sujeto

In English, the verb to be means ser as well as estar, and this fact makes the things a little bit easier. The inflection of the verb to be in simple present tense, for different subject pronouns, is as indicated by the following chart:

En inglés, el verbo to be significa ser tanto como estar, y este hecho hace que las cosas sean un tanto más sencillas. La flexión del verbo to be en tiempo presente simple, para diferentes sujetos, es como se indica en la tabla siguiente:

Singular Audio		Plural Audio
	contraction		contraction
I am (yo soy)	I'm	we are (nosotros somos)	we're
you are (tú eres)	you're	you are (ustedes son)	you're
he is (él es)	he's	they are (ellos son)	they're
she is (ella es)	she's
it is (él/ella [cosa, animal, tiempo, clima] es)	it's

If the subject is a singular noun, then is is used.	If the subject is a plural noun, then are is used.
Si el sujeto es un sustantivo singular, entonces se usa is.	Si el sujeto es un sustantivo plural, entonces se usa are.

Negation

The negation of the verb to be is formed by placing not after the inflected form of this verb:

La negación del verbo to be se forma poniendo not después de la forma flexionada del verbo:

Singular		Plural
I am not (yo no soy)		we are not = we aren't (nosotros no somos)
you are not = you aren't (tú no eres)		you are not = you aren't (nosotros no somos)
he/she/it is not = he/she/it isn't (él/ella no es)		they are not = they aren't (ellos no son)

Examples

1. My father is the person I admire the most. He is very hardworking. (My padre es la persona que más admiro. Él es muy trabajador)
2. The Queen of England is Isabel II. (La Reina de Inglaterra es Isabel II)
3. London is the longest city of England. It is also the longest city of the United Kingdom and the European Union. (Londres es la ciudad más grande de Inglaterra. Es también la ciudad más grande del Reino Unido y la Unión Europea)
4. Dolphins are very intelligent animals. (Los delfines son animales muy inteligentes)
5. You are a kind person. (Tú eres una persona gentil)
6. You all are good friends. (Ustedes son buenos amigos)
7. When tomatoes are red, they taste good, but the only tomato we have is green. (Cuando los tomates están rojos, saben bien, pero el único tomate que tenemos está verde)

FUENTE: http://es.wikibooks.org/wiki/Ingl%C3%A9s/Gram%C3%A1tica/El_verbo_ser_o_estar

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