Here, A is the definite article meaning the.
So:
Portuguese a can mean different things depending on context:
In A roda gira devagar, it is clearly the article because it comes before the noun roda.
If you wanted a wheel, you would say:
Gira is the 3rd person singular present tense of the verb girar, which means to turn, to spin, or to rotate.
So:
In this sentence, a roda gira means:
Because girar is the infinitive form, like to turn or to spin in English.
In a normal sentence with a subject, Portuguese usually uses a conjugated verb:
So:
In Portuguese, you normally do not need a subject pronoun like it here.
The noun itself is already the subject:
So A roda gira already means The wheel turns.
You could say ela in some contexts, but it would usually be unnecessary or used for emphasis:
In European Portuguese, gira is pronounced roughly like ZHEE-ruh.
A few key points:
So gira does not start with a hard g as in gift. It is a soft sound:
A rough English-friendly pronunciation would be:
A few notes:
This is only an approximation, but it helps with the main sounds.
Yes. As a form of girar, it means turns/spins here.
But giro / gira can also be an adjective in Portuguese, meaning something like nice, cute, or cool in some contexts.
For example:
However, in A roda gira devagar, it is definitely the verb gira from girar, because it follows the subject a roda and is part of the sentence structure.
Yes. In European Portuguese, estar a + infinitive is a very common way to express an action in progress.
So:
The first sentence is simpler and more general. The second one emphasizes that the action is happening right now.
Usually, A roda means the wheel, so it sounds like a specific wheel or a wheel already known from the context.
But in some cases, Portuguese can use the definite article more generally than English does. Context decides a lot.
So in a basic learning sentence, the safest understanding is:
If you wanted a more general plural idea, you might say:
The plural would be:
Changes:
So: