Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Principal Parts of Verbs Verbs -show action or state of being Principal parts -base form, the past, the past participle -a fourth part, the present participle, is formed by adding –ing to the base form of the verb Verb phrase -is two or more verbs that work together as a unit (may have one or more auxiliary verbs and the main verbs)