Afirmativa presente: Paul and Meg they are enemies The school it is a good place
afirmativa passado: the school it was a good place Paul and Meg was they are enemies
interrogativa presente: Paul and Meg are they enemies? the school was it a good place? interrogativa passado: was Pedro is your friend? Paul and Meg are was enemies? negativa presente - the school it as not a good place pedro isn`t my friend negativa passado-- the school it was a not good place pedro was isn`t my friend ESPERO TER AJUDADO!