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 shaken" or "has shaken," depending on the subject of the sentence.
Have/has shaken.
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."
The future perfect tense of "shake" is "will have shaken."
The present perfect tense of "hid" is "have/has hidden."
The present perfect tense of "exist" 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 perfect tense.
The present perfect tense of "hid" is "have/has hidden."
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
The present perfect tense of "are" is "have been."
The present perfect tense of leave is have/has left. The present perfect tense of eat is have/has eaten.
"have tried" is the present perfect tense.
The present perfect tense of "exist" is "has/have existed."
The 6 forms of perfect tenses are: present perfect, past perfect, future perfect, present perfect continuous, past perfect continuous, and future perfect continuous.
The future present perfect tense of "talk" is "will have talked." For example: "By next week, I will have talked to my boss about the project."