he had undergone an operation vs he had underwent an operation

The correct phrase is "he had undergone an operation." The verb "undergo" is followed by the past participle "undergone" in this context. The phrase "he had underwent an operation" is incorrect.

Last updated: March 27, 2024

he had undergone an operation

This phrase is correct and commonly used in English.

This phrase is used to indicate that someone has experienced or gone through a medical procedure or surgery in the past.

Examples:

He had undergone an operation to remove his appendix.
After he had undergone an operation, he needed time to recover.
She had undergone an operation on her knee last year.
The patient had undergone an operation to repair a heart valve.
They had undergone an operation to separate conjoined twins.

he had underwent an operation

This phrase is incorrect in English.

Alternatives:

he had undergone an operation
he underwent an operation
he has undergone an operation
he was undergoing an operation
he will undergo an operation

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he had undergone an operation vs he had underwent an operation