1. There is / there are = Hay…
Afirmativa / Negativa / Interrogativa
Formas contractas
Singular
There is / there is not/ Is there…?
There´s / there isn´t
Plural
There are / there are not/ Are there…?
There are/ there aren´t
Respuestas breves:
Is there…? Yes, there is / No, there isn´t
Are there…? Yes, there are / No, there aren´t.

2. Forma afirmativa: “There´s a poster on the wall”
There is + a + sustantivo contable en singular.
There is + some + sustantivo incontable.
There are + some+ sustantivo contable en plural.
“There´s a poster on the wall”
“There´s some money on the table”
“There are some CDs on the floor”

3. Forma negativa: “There isn´t a computer in the classroom”
There is + not + a + sustantivo contable en singular.
There is + not + any + sustantivo incontable.
There are + not + any + sustantivo contable en plural.
“There isn´t a computer in the classroom”
“There isn´t any food in the house”
“There aren´t any students in the school”

4. Forma interrogativa: Is there + a + sustantivo contable en singular.
Is there + any + sustantivo incontable.
Are there + any + sustantivo contable en plural.
En las respuestas breves afirmativas no se usan las formas contractas; por el contrario, en las negativas se suelen utilizar.
“Is there a bicycle in the garden? Yes, there is”
“Is there any food in the fridge? No, there isn´t”
“Are there any books in your bag? Yes, there are”

5. “There aren´t any biscuits” “Are there any apples?”
!Ojo!
Any se utiliza en frases negativas e interrogativas, delante de los sustantivos contables en plural e incontables en singular.
“There aren´t any biscuits”
“Are there any apples?”
“There isn´t any sugar in my tea!”