Grammar: Tenses

In this quarter, it is necessary to review the tenses. To remember, I made a table with Examples (Affirmative / Negative / Question), Use and Signal Words:

In this quarter, we learned about grammar was The Past Perfect. It is used for “actions that happened, or situations which existed, before another action at a particular time in the past".

Also, we learned about The Past Progressive Tense. It indicates continuing action, something that was happening, going on, at some point in the past.