she had undergone an operation vs she undergone an operation

The correct phrase is "she had undergone an operation." The use of the past perfect tense (had undergone) is necessary to indicate that the action of undergoing the operation happened before another past event. The phrase "she undergone an operation" is incorrect as it lacks the auxiliary verb "had."

Last updated: March 12, 2024

she had undergone an operation

This phrase is correct and commonly used in English.

This phrase is used to indicate that the action of undergoing the operation happened before another past event. The past perfect tense (had undergone) is necessary for this context.

Examples:

She had undergone an operation before she started feeling better.
By the time they arrived, she had undergone an operation.
I found out that she had undergone an operation last week.
She had undergone an operation when I visited her in the hospital.
The doctor confirmed that she had undergone an operation.

Show examples from the web [+]

Seven years previously, she had undergone an operation because of possible common bile duct stone. The details of this operation were not known.
... am a woman again", in which she stated she had undergone an operation, which "helped change her life again". She died, aged 52, from pneumonia in 1960.
Her chief complaint was palpitation going on for the last 2 years. Her medical history revealed that she had undergone an operation of PDA closure when she ...
Jan 7, 2014 ... At the age of 16 she had undergone an operation to treat a cleft lip, performed by pioneers in reconstructive surgery, and she went on to ...

Alternatives:

She underwent an operation.
She has undergone an operation.
She was undergoing an operation.
She would undergo an operation.
She will have undergone an operation.

she undergone an operation

This phrase is incorrect in English. The auxiliary verb "had" is necessary in this context.

Show examples from the web [+]

Sep 22, 2013 ... I'm Mall's sister, Erica. Her shop update will be postponed due to an emergency. She undergone an operation due to a severe abdominal pain.
Nov 27, 2014 ... I'm Mall's sister, Erica. Her shop update will be postponed due to an emergency. She undergone an operation due to a severe abdominal pain.
Aug 6, 2013 ... ... some time ago and fortunately for her she survived after she undergone an operation in UK, her crime was that she is attending to school to ...
Teen star Hilary Duff has hit out at reports she's undergone an operation to enlarge her breasts - after posters for her film The Lizzie McGuire Movie featured her ...

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she had undergone an operation vs she undergone an operation