Overt tense/aspect marking is essentially obligatory in auxiliary-less main clauses. Unmarked occurrences are acceptable only for a subset of the class of stative verbs, namely those which do not admit combination with preverbal ta (see Feature 46 "Tightness of link between progressive marker and verb"). There are no verbs which fail to combine with the other preverbal modifiers. Thus we can distinguish three sets of verbs:
a. stative verbs which do not combine with ta, e.g., konosé 'know, be acquainted with', sabi ~ sa 'know', ke (Curacao) and kjèr (Aruba) (both: 'want');
b. stative verbs which are optionally modified by ta, e.g., stima 'love', kosta 'cost';
c. all other stative and non-stative verbs, e.g., deseá 'want, wish', ke 'believe', kanta 'sing'.
The interpretation of the verb preceded by ta is not affected by stativity. Whether the verb is stative or dynamic, the presence of ta in out-of-the-blue utterances triggers a present tense interpretation.
Source: Muller 1989b: 323
Source: Papiamentu database
Source: Kouwenberg & Murray 1994: 46