Difference between Past and Ago

PAST vs AGO: NOUN

The past tense.
The time before the present.
Previous background, career, experiences, and activities.
A earlier period in someone's life (especially one that they have reason to keep secret)
A former period of someone's life kept secret or thought to be shameful.
A verb form in the past tense.
A verb tense that expresses actions or states in the past
The time that has preceded the present; a former or bygone time, or the events of that time; that part of the history, life, or experiences of a person or thing that is passed: as, to forget the past; an unfortunate past.
A former time or state; a state of things gone by.
The period of time that has already happened, in contrast to the present and the future.
The time that has elapsed

Having served formerly in a given capacity, especially an official one.
Earlier than the present time; ago.
Of, relating to, or being a verb tense or form used to express an action or condition prior to the time it is expressed.
Having existed or occurred in an earlier time; bygone.
No longer current; gone by; over.
Of or pertaining to a former time or state; neither present nor future; gone by; elapsed; ended; spent
See under Master.
A verb tense or other construction referring to events or states that existed at some previous time
Earlier than the present time; no longer current
Of a person who has held and relinquished a position or office
Just gone by or elapsed.

Beyond.
Beyond in position; further than; also, by and beyond: as, the house stands a little past the junction.
Beyond the reach of; at a point that precludes or makes (something) impossible or improbable; out of the reach, scope, or influence of: as, past redemption; past all sense of shame; past comprehension.
Beyond in number or amount; above; more than; exceeding.
Beyond the enjoyment of; over and done with.
By; so as to pass and go beyond.
Gone by; belonging to a time previous to this; not present nor future: as, past time: one's past life.
Hence In the predicate, ago.
Spent; ended; accomplished; existing no more; over and done with.
That has completed a full term and is now retired: as, a past (or passed) master in free-masonry. See master.
That indicates or notes past time: as, a past participle; the past tense.
Earlier than the present time
No longer current

Historical, Yesteryear, Other, Bygone, Old, Yore, Then, Gone, Once, Earlier, Preceding, Previous, Ago, Last, Recent

Subsequently, Just, Since, First, Previous, Prior, Before, Recently, Years, After, Earlier, Later, Last, Agone, Past

Historical, Yesteryear, Other, Bygone, Old, Yore, Then, Gone, Once, Earlier, Preceding, Previous, Ago, Last, Recent

Then, Just, Since, First, Previous, Prior, Before, Recently, Years, After, Earlier, Later, Last, Agone, Past

The Past Perfect Continuous structure should be pretty simple for you because it starts in the exact same way as the Past Perfect Tense!
Simple past tense is used to express the actions that happened in the past or happened one after the other.
Another type of participle, the past participle, is a little more complicated, since not all verbs form the past tense regularly.
Normalized: Past time frames are normalized against past SOS.
Past progressive verbs are also called past continuous verbs.
She went out past Vega, out past Moulquet and Lambard!
You are currently past due or have recently been past due on a debt obligation.
Dear Past Dear Past been through so much I thought it would never last.
Menggunakan simple past tense, past continuous tense, past perfect tense, and past perfect continuous tense.
He comes as thoughts that continue to remind you of the past and past mistakes.

We did this a couple of updates ago.
Evergreen river basin and not that long ago.
He should have come home weeks ago now.
We did the leadership program together years ago.
The breakup just happened a few weeks ago.
We read this a couple of weeks ago.
Appellate Court ruled years ago in Reliance Ins.
However, the posting was advertised three months ago and the last update on the system was two months ago.
Xiao, we had hearings about a decade ago, a little less than a decade ago, on Google, Microsoft, Cisco, and Yahoo!
But a generation ago, two generations ago, we made a bigger commitment.