<span>This is called the progressive verb form. Most commonly known are the present and the past progressive, known also as present and past continuous forms of a verb. And example would be saying that someone "is working", or "was working", where we use the participle working and helping verb "is", that is, "was".</span>
The answer for the question is progressive verb. <span>Progressive verbs are verb tense used to show an ongoing action in progress at some point in time. we can have present progressive verb (singing), future progressive ( will be singing). Infinitive verbs are verbs that do not show tense, numbers, mood, and person. An irregular verb is a verb in which the past tense is not formed by adding the usual -ed ending. Examples include; sing (past tense sang), feel (felt). </span>
