1. Did you make this?

2. Did you made this?

Which one is correct and could someone explain the reason as well?

Thank you.
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Comments  (Page 2) 

The correct one is:

1. Did you make this?

Did you make this? Is correctly written, because did is the past form of auxiliar verb do, and the main verb of the sentence does not change.
Students: We have free audio pronunciation exercises.

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