"Has/have served".
served
The present perfect of follow is has/have followed.
The present perfect form of "present" is "have/has presented."
The present perfect tense is Have/Has Hidden.
The present perfect tense is has/have existed.
The past perfect is formed by had + past participle. The past participle of serve is served.past perfect = had served.They had served lunch by the time I got there.
have/has planned (PRESENT PERFECT)
The present perfect is 'I have sung'
The present perfect tense of "are" is "have been."
Has/have drawn is the present perfect of "draw".
Present perfect tense.
There are two forms of the present perfect tense: simple present perfect (I have eaten) and progressive present perfect (I have been eating). Both forms use "have" or "has" with the past participle of the main verb to indicate an action that started in the past and has relevance to the present.