There is/are a lot of cars?
hey everybody, can you help me with this silly question
in spanish when we want to say that something does exist we say "hay un gato" that means there is a cat
but what happens when it is more than one cat do I need to say there are a lot of cats or there is a lot of cats?

Question

Answer

For plural ( more than one) use ARE, but for singular ( just one) use IS. Lets give you an example:  
-This house is stunning ( singular, only one house).
-These houses are stunning ( plural, more than one house).

Now, lets use the example you provided above:
- There is a cat ( one cat).
- There are a lot of cats ( more than one).

Goodluck!

Answer

"There are a lot of cats/cars" is correct, but colloquially people will abbreviate "There are" to "There's".

Answer

are.

Hay un gato en la casa
There is one/a cat in the house.

Hay muchos gatos en la casa. 
There are a lot / many cats in the house.

Hay un carro en el estacionamento. 
There is a car in the parking lot.

Hay unos carros en el estacionamento. 
There are a few/some cars in the parking lot.

Answer

There is a cat in the house
There are a lot of cats in the house