Present perfect is formed with --- have/has + past participle.
Because long is a regular verb the past participle is verb + -ed = longed.
So present perfect is have longed or has longed eg
They have longed to see each other again
He has longed for a new car for years.
Have/Has longed.
Have/Has longed.
Present tense
"Have you been waiting long" is an example of the present perfect tense. It is used for an action that started in the past and has continued up till now.
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."
"have tried" is the present perfect tense.
The present perfect tense of leave is have/has left. The present perfect tense of eat is have/has eaten.
The present perfect tense of clap is 'have/has clapped'.