The present perfect forms are have shaken and has shaken.
Examples:
They have shaken everything up. (plural subject)
She has shaken everything up. (singular subject)
The present perfect tense of shake is have/has shaken.I have shakenWe have shakenYou have shakenHe/she has shakenThey have shaken
The past perfect tense of shake is had shaken.
Will have been shaken. Will have shaken.
The present perfect tense is Have/Has Hidden.
The present perfect tense is has/have existed.
The present perfect tense of shake is have/has shaken.I have shakenWe have shakenYou have shakenHe/she has shakenThey have shaken
shook The present perfect tense is "I have shaken".
The past perfect tense of shake is had shaken.
Present tense: will shake Past tense: shook Future tense: will shake
The present tense of "shook" is "shake."
Will have been shaken. Will have shaken.
I/you/we/they shake. He/she/it shakes.
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