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Portuguese/Imperfect subjunctive tense regular verbs
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
The imperfect subjunctive is formed by adding the following endings to the stem.
For all verbs this is formed from the third person plural preterite stem plus the set endings in the table below for the type of verb
What is meant by the 'stem' in this case is what is left after taking the 'ram' ending from the 'eles' form of the preterite tense.
Trying this with a regular verb (1st person singular form):
FALAR > falaram - ram = fala > fala + sse = FALASSE
Trying this with an irregular verb (1st person singular form):
FAZER > fizeram - ram = fize > fize + sse = FIZESSE
For the 'nós' and 'vós' forms, accents must be added as per the table below:
...I was speaking
Eu fala
sse
...you were speaking
Tu fala
sses
...he was speaking
(also ela, você)
Ele fala
sse
...we were speaking
Nós fal
ássemos
BUT
Nós comêssemos
Nós partíssemos
...you (p) were speak
Vós fal
ásseis
Vós comêsseis
Vós partísseis
...they were speaking
(also elas, vocês)
Eles fala
ssem