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"What did he do" vs "What did he did"

The correct phrase is "What did he do?" The second phrase, "What did he did?" is incorrect because the auxiliary verb "did" is already conjugated, so the main verb "do" remains in its base form.

Last Updated: March 21, 2024

What did he do

This phrase is correct and commonly used in English.

This phrase is used to ask about someone's actions in the past. The auxiliary verb "did" is already conjugated, so the main verb "do" remains in its base form.

Examples:

  • What did he do to help?
  • I wonder what he did yesterday.
  • Can you tell me what he did at the party?
  • Do you know what he did to fix the problem?
  • What did he do that made you angry?

What did he did

This phrase is incorrect in English.

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