Learn Hardcore Portuguese (Brazil): Não quero ir sozinha pela avenida quando está escuro. - I do not want to go alone along the avenue when it is dark.

Breakdown of Não quero ir sozinha pela avenida quando está escuro.

Why is não placed before quero?

In Portuguese, não normally goes directly before the verb it negates.

So:

This is the standard way to make a sentence negative in Portuguese. Unlike English, Portuguese does not use a separate helping verb like do.

So:

Why is there no eu in the sentence?

Portuguese often leaves out subject pronouns when the verb already makes the subject clear.

Because quero clearly shows I, eu is optional here.

You could say:

But it is very common, and natural, to say:

Why do we use ir after quero?

After verbs like querer (to want), Portuguese usually uses an infinitive for the next action.

So quero ir works just like want to go in English.