fast
In Spanish, 'rápido' represents the concept of quick or fast. It could be used in different contexts e.g., running quickly, fast car, etc.
The car is very fast
This is a descriptive sentence where 'rápido' is used as an adjective to describe the car.
I have to quickly go to the store
This phrase is used when someone needs to hurry to a place. In this context, 'rápido' is acting as an adverb, modifying the verb 'ir'.
I ate my lunch quickly
Here, 'rápido' describes how the action 'comí' - 'I ate', was done.
She learns quickly
This sentence describes the manner in which 'she' learns. 'Rápido', in this context, describes how fast she picks up new information.
Time flies fast
This phrase is a metaphor used to express that time passes quickly.
He runs faster than a lion
This is a comparative sentence where 'rápido' is being used to compare the speed of two things - 'he' and 'a lion'.
You speak fast
This phrase is used to inform or describe the speed at which someone speaks, using 'rápido' as an adverb describing 'hablas' (you speak).
The fast train will arrive soon
In this sentence, 'rápido' describes the train and is used as an adjective.
You should work quickly
'Rápida' is used here to give advice on the speed at which one should work, indicating that it should be fast.
I am expecting a quick response
This phrase uses 'rápida' as an adjective to express the expectation of a fast or swift response.