Have been improving.
---
Have been improving is the present perfect progressive tense conjugated for first and second person singular and first, second, and third person plural.
The present perfect tense of improve:
I have improved
You have improved
He/she/it has improved
We have improved
They have improved
Past perfect tense - I had dug. Present perfect tense - I have dug. Future perfect tense - I will have dug.
Past perfect tense, past perfect continuous tense, present perfect tense, present perfect continuous tense, future perfect tense and future perfect continuous tense.
The tense that uses "had" is the past perfect tense, while the tense that uses "have" is the present perfect 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
Existed is the past tense. The past perfect tense is had existed.
I/We/You/They have improvedHe/She/It has improved
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
Past perfect tense - I had dug. Present perfect tense - I have dug. Future perfect tense - I will have dug.
Present Tense, Paste Tense, Future Tense, Future Perfect Tense, Present Perfect Tense, Past Perfect Tense
Past perfect tense, past perfect continuous tense, present perfect tense, present perfect continuous tense, future perfect tense and future perfect continuous tense.
Present perfect tense - have/has gone. Present perfect continuous tense - have/has been going. Past perfect tense - had gone. Past perfect continuous tense - had been going. Future perfect tense - will have gone. Future perfect continuous tense - will have been going.
The tense that uses "had" is the past perfect tense, while the tense that uses "have" is the present perfect 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
Existed is the past tense. The past perfect tense is had existed.
The past perfect tense of hope is had hoped.
The future perfect tense is will have given.
The past perfect tense is had submitted.