More grammar!!! The past BEFORE the past

We will go back in time…       🕔  ➜   🕒
Now we are in the past.  We will call it Past Simple.  Simple means easy.

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Now, let’s go far, far back in time…     🕔  ➜  🕒  ➜  🕐
When you go FAR back in time, it is called Past Perfect.
Why? 🤔  I do not know. 🙄

Do not worry about the names.  How do you talk about the past and FAR past in one sentence?
This video will help!

I could use Past Simple twice (saw and watched), and say

I saw many bad lessons, and then I watched this video.

This makes me think more about this good video.

Now you can make a sentence like this.  The red is Past Perfect (had seen):

By the time I saw this video, I had already seen many bad lessons.

This makes me think more about the bad lessons.

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More examples

1. We sat at the table to eat, but my friend had eaten all the food!
   This means there was no food when we sat down! 
2. We sat at the table to eat, but my friend ate all the food! 
   This is Past Simple.  It mean that we sat, and THEN my friend ate the food. 
3. I called my new friend.  I had spoken to him before, but this time, he seemed sad.