Double R Ontology and Gold Standard April 2008 Jerry Ball Senior Research Psychologist Human Effectiveness Directorate Air Force Research Laboratory.
Verb Forms. eg1471/jc/dec2008 Forms of Verbs All verbs (except auxiliary verb be) have 5 forms. The past participle form is not always related to past.
Verb Forms. eg1471/jc/dec2008 Verb Forms All verbs (except be) have 5 forms. Infinitive / Base form (no -s) Third person -s form -ing formPast tense form.
