The tense depends on the subject pronoun. You either use "have" or "has" with "walked."
Present Perfect Examples:
I have walked.
You have walked.
We have walked.
They have walked.
He has walked.
She has walked.
It has walked.
I/you/we/they have walked. He/she/it haswalked.
The present tense of "walk" is:I/You/We/They walk.He/She/It walks.The future tense is will walk.
The present perfect tense is Have/Has Hidden.
The present perfect tense is has/have existed.
Was is a past tense conjugation of be. The present perfect tense of be is have/has been.I/We/You/They have beenHe/She/It has been
I/you/we/they have walked. He/she/it haswalked.
The present tense of "walk" is:I/You/We/They walk.He/She/It walks.The future tense is will walk.
Present tense
The present perfect tense is Have/Has Hidden.
The present perfect tense is has/have existed.
present tense past tense future tense present perfect tense past perfect tense future perfect tense present progressive tense past progressive tense future progressive tense present perfect progressive tense past perfect progressive tense future perfect progressive tense
Was is a past tense conjugation of be. The present perfect tense of be is have/has been.I/We/You/They have beenHe/She/It has been
The present perfect tense of "are" is "have been."
They are Simple Tense past, present and future......as in walked, walk and will walk. Continuous past and present. as in was walking and am walking Perfect present, as in have walked Perfect continuous, as in have been walking
"have tried" is the present perfect tense.
The present perfect tense of clap is 'have/has clapped'.
The present perfect tense of leave is have/has left. The present perfect tense of eat is have/has eaten.