Questions & Answers about Eu quero isto.
You can say either Eu quero isto or simply Quero isto.
In Brazilian Portuguese, subject pronouns are often optional because the verb ending already shows the subject. Since quero clearly means I want, eu is not required.
- Eu quero isto = more explicit, sometimes more emphatic
- Quero isto = very natural in everyday speech
People may include eu for emphasis, contrast, or clarity.
Because quero is the conjugated verb form, while querer is the infinitive.
- querer = to want
- quero = I want
So in a full sentence, you usually need the conjugated form: