- Which sentence correctly says "They are going to study tomorrow"?
Answer: Eles vão estudar amanhã.
Ir + infinitive needs 'ir' conjugated to match the subject ('eles vão') followed by a bare infinitive: 'Eles vão estudar amanhã.' The 'vão a estudar' version copies the Spanish pattern. Portuguese does not put 'a' between 'ir' and the infinitive.
- Choose the best translation: "I'm going to call my grandmother tomorrow."
Answer: Vou ligar para minha avó amanhã.
'Vou' is the eu form of 'ir', and 'vou + infinitive' expresses a future plan: 'Vou ligar para minha avó amanhã.' 'Ia ligar' is tempting, but it means 'I was going to call', a past intention. It is not a current plan.
- Complete the sentence: "Amanhã eu ___ jogar futebol com meus amigos."
Answer: vou
The subject is 'eu', so 'ir' becomes 'vou': 'Amanhã eu vou jogar futebol.' 'Vamos' may be tempting because of 'meus amigos', but the subject is still 'eu'. The friends are only mentioned after 'com'.
