Now let's take a closer look at the circumstances under which we will refer to the Past Progressive. You should know that English speakers talk about the past by separating short-term episodes and long-term processes. Be sure to remember, if you want to emphasize duration, use the Continuous line.
Let's move on to the cases of Past Progressive usage:
1. The event took place at a specific moment in the past. In this case, counselors at 3 o'clock, at 7 pm yesterday, this morning 5:40.
Jacob wasn't sleeping at 5 am this morning.
Her friends were repairing a car at 4 o'clock yesterday.
2. The action continued for a while, but was interrupted by another, short-term action. The clearest indicator of this usage would be the conjunction when.
I was sunbathing on my house's roof when you interrupted me.
Ted was trying to tie shoelaces when I came.
3. The two processes happened at the same time. It is important that they did not break off, but ran parallel to each other.
Waves were crashing on the rocks while I was walking along the beach.
4. Often this construction is used in stories about the past to make the interlocutors feel the atmosphere and become fully involved in the events.
The weather was amazing. My sister and I were enjoying the sunset, our grandpa was reading a newspaper, Dad was watching football on TV, and our poor Mom was cooking.
5. Used to describe uncharacteristic or annoying situations that have happened before. In this case, use special, emphasizing words always - always, often - often, constantly - constantly.
He was always doing something wrong as I remember.
She was keeping silent almost constantly at work meetings, but my boss wanted her to speak. (If a person is asked to speak and he keeps silent all the time, it is annoying.)
6. To translate from direct speech to indirect speech. To convey thoughts in your own words, not exactly in your own words.
"What are you reading now, Alison?" asked Mr. Brown. (Direct speech in Present Continuous)
For transition to indirect speech it is correct to follow the principle of harmonization of tenses: Present Continuous - Past Continuous. The quotation marks are also omitted.
Mr. Brown asked Alison what she was reading then.
Note the change of pronouns and adverbs: you - she, now - then, here - there.
Another example:
George said, "I am staying here."
George said, that he was staying there.
Difficulties occur when we want to talk about a long activity but cannot use Past Continuous because some verbs are not used with this tense. These are so-called state words describing thought processes: to think, mean, understand, forget, remember; expressing opinion, feeling, emotion: to agree, suppose, need, notice, hear, hear, want, hurt, taste, smell, smell, smell; indicating belonging: to own, have, belong, relate. Past Simple is used in place of Past Continuous with these words.
This laptop always belonged to me. (You can't say was belonging)
I agreed with everything he said.