Answer:
This is an example of past perfect tense, when a sentence uses the words, "had done", "will be doing".
Here are some examples in a sentence.
- I will be leaving tomorrow for the games.
- She had done all her chores, so she played outside.
- He had ate all of the popcorn! It tasted so great.
- They had bought beautiful shoes. I will never forget those shoes.
- Hope this helps!
- If it does, please leave thanks!