A.- Supply the correct form of TO-BE verb in present tense(AFFIRMATIVE).

1.- Heis a good student

2.- They areold friends

3.- I am a student

4.- John and Peter are  absent from the class today

5.- We are both students

6.- The weather isgood today

7.- The skyis clear

8.- Henry and John are brothers

9.- She and I ambrothers (siblings)

10.- Mr Smithissick today

11.- She is a businesswoman

12.- Mr Jonesis a lawyer

13.- Today is Wednesday

14.- She and Johnare both good students

15.- The policeman in the corner is busy with the traffic today

16.- He and I are old friends.

B- Change the following sentences from affirmative to the negative form.

1.-  They are in Europe now.

NEGATIVE: They aren’t in Europe now.

2.-  John is angry with you.

NEGATIVE: John isn’t angry with you.

3.-  He and she are cousins.

NEGATIVE:  He and she aren’t cousins.

4.-  He is very studious.

NEGATIVE: He is not very studious.

5.-  Both sisters are tall.

NEGATIVE:  Both sisters are not tall

6.-  She is a funny girl.

NEGATIVE: She is not a funny girl

7.- They are members of the country club.

NEGATIVE: They aren’t members of the country club

8.-  He is a good tennis player.

NEGATIVE: He a isn´t good tennis player

9.-  Mr. Smith is a pilot with American Airlines.

NEGATIVE: Mr. Smith is not a pilot with American Airlines

10.- The sky is very cloudy today.

NEGATIVE: The sky is not very cloudy today

11.-  The office of the principal is on the third floor office.

NEGATIVE: The office of the principal is not on the third floor office

12.- It is cold today.

NEGATIVE: Today is not cold

13.- She is a tall, blonde girl.

NEGATIVE: She isn’t a tall, blonde girl

14.- It is a good movie.

NEGATIVE: It is not a good movie

15.- The stamps are in my desk.

NEGATIVE:  The stamps are not in my desk

16.- He is in his office.

NEGATIVE: He is not in his office

C.- Change all the sentences above to the question form.

1.-  Are they in Europe now?              

2.-  Is John angry with you?

3.- Are he and she cousins?

4.- Is he very studious?

5.-  Are both sisters tall?

6.-  Is she a funny girl?

7.- Are they members of the country club?

8.-  Is he a good tennis player?

9.-  Is mr. Smith a pilot with American Airlines?

10.- Is the sky very cloudy today?

11.- Is the office of the principal on the third floor office?

12.- Is it cold today?

13.- Is she a tall, blonde girl?

14.- Is it a good movie?

15.- Are the stamps in my desk?

16.- Is he in his office?

ARTICULO SINGULAR INDEFINIDO (A – AN):

En el idioma Inglés, se utiliza el artículo singular indefinido A – AN – que significan UN – UNO – UNA; recordemos que un artículo es la categoría gramatical que va antes del sustantivo para definirlo en género y en número;  en Inglés, hay que tener cuidado al usarlo, ya que está definido desde la gramática, que usamos A antes de una consonante y  AN antes de una vocal, ejemplos:  AN  actor, AN  apple, AN engineer. (Un actor, una manzana, un ingeniero).

A  Doctor, A  dog, A  pear. (Un doctor, un perro, una pera.)

Complete the following sentences with A – AN:

1.-   It is A lovely day                                             

2.-  It is AN old university

3.-   He is AN unusual man                                            

4.-  It is AN exception to the rule

5.-   It is A long trip, but it is AN easy trip                       

6.-  It is A  large library

7.-   It is AN orange                                               

8.-  They are pears

9.-   He is A honest man                                      

10. She is AN old woman

11.- His car is AN used car                                              

12  It is A tall tree

13.- It is AN egg                                                     

14  It is AN apple

15.- It is AN old bus                                   

16  It is AN empty bottle

17.- He is AN actor                                                

18  It is A windy day

19.- It is A good idea                                             

20  It is A new building