Questions & Answers about Eu vejo aquilo.
You can often just say Vejo aquilo.
Portuguese usually allows the subject pronoun to be omitted because the verb ending already shows who the subject is. Here, vejo means I see, so eu is not always necessary.
You would include eu when you want:
- emphasis: Eu vejo aquilo, mas ele não.
- contrast: Eu vejo aquilo; você vê outra coisa.
- clarity, in some contexts
So Eu vejo aquilo and Vejo aquilo are both correct.
Because vejo is the conjugated form of the verb ver (to see) for I in the present tense.
- ver = infinitive, to see
- vejo = I see
This is the present tense conjugation:
- eu vejo = I see
- você/ele/ela vê = you/he/she sees
- nós vemos = we see
- vocês/eles/elas veem = you all/they see
So in Eu vejo aquilo, the verb has to match eu.