What is is + v3?

"Is + v3" refers to a grammatical structure in English which is formed by using the auxiliary verb "is" followed by a past participle, known as the "v3" form. This structure is used to form the present perfect tense, which indicates that an action or event started in the past and continues up to the present.

For example:

• "He is married." - This sentence uses the "is + v3" structure to indicate that the man in question got married in the past and is still married now.
• "She is finished with her work." - Here, the present perfect tense is used to show that the woman completed her work sometime in the past, but the effects of that action are still relevant in the present (i.e. she is now able to relax or do something else).

Another use of "is + v3" is the passive voice. In this case, the verb "is" is followed by the past participle of the main verb to indicate that the subject of the sentence is the recipient of an action, rather than the performer of the action. For example:

• "The house was built." - The passive voice is used here to show that the house was constructed by someone else in the past, rather than specifying who built it.