he has undergone operation vs he had undergone operation

Both phrases are correct, but they are used in different contexts. "He has undergone operation" is used to indicate that the operation was recently completed and the effects are still relevant in the present. On the other hand, "he had undergone operation" is used to indicate that the operation was completed in the past and is not necessarily relevant to the present.

Last updated: March 31, 2024 • 781 views

he has undergone operation

This phrase is correct and commonly used in English.

This phrase is used to indicate that the operation was recently completed and the effects are still relevant in the present.

Examples:

He has undergone an operation and is now recovering at home.
She has undergone surgery and is expected to make a full recovery.

Show examples from the web [+]

have not undergone operations there other than unloading and reloading.
Our colleague, Mr Brok, has undergone an operation.
As some Members already know, the President of the European Parliament has undergone a minor operation for appendicitis.
(iii) have not undergone operations there other than unloading and reloading or any other operation to keep them in good condition.
People who have worked in hospitals have said that as many as 6000 Falun Gong members have undergone operations to have internal organs removed, and that at least three quarters of them have died as a result of the operation.
Any refund on products which have undergone operations as referred to above shall be determined on the basis of the quantity, type, and characteristics of the products at the date used to calculate the refund, in accordance with Article 27.
5. 'prepared products' means any fishery product which has undergone an operation affecting its anatomical wholeness, such as gutting, heading, slicing, filleting, chopping, etc.;
have undergone a surgical operation or invasive procedure;
b) they have undergone normal tending operations.
Anteo had undergone an operation on his tongue to reshape the spaces of his mouth to approximately coincide with the proportions of the singing apparatus of the starling.
(b) Community goods which have undergone processing operations within a free zone;
has not undergone any operation beyond that necessary to preserve it in good condition.
Certain specified waste shall cease to be waste within the meaning of point (1) of Article 3 when it has undergone a recovery operation and complies with specific criteria to be developed in accordance with the following conditions:
'reused content (of a product)' means the content of a product which has undergone a reuse operation;
processed products means goods placed under a processing procedure which have undergone processing operations;
a room for desalting, soaking and any other treatment, particularly of natural guts, where these raw materials have not undergone such operations in the establishment of origin;
How would you feel if you had undergone such an operation?
Secondly, every patient should have a social security record listing the examinations he has undergone, so that doctors can see them and order new examinations accordingly.
This operation may be carried out outside the area of origin by undertakings that have accepted and comply with the agreed protocol so as to guarantee the operations undergone by Queso Manchego and ensure its traceability.
they have not undergone any operation beyond that necessary to preserve them in good condition while in that country or while being exported.

Alternatives:

He underwent an operation.
He has had an operation.
He has undergone surgery.
He has had surgery.

he had undergone operation

This phrase is correct and commonly used in English.

This phrase is used to indicate that the operation was completed in the past and is not necessarily relevant to the present.

Examples:

He had undergone an operation before he started experiencing complications.
By the time he arrived at the hospital, he had already undergone surgery.

Show examples from the web [+]

have not undergone operations there other than unloading and reloading.
Anteo had undergone an operation on his tongue to reshape the spaces of his mouth to approximately coincide with the proportions of the singing apparatus of the starling.
(iii) have not undergone operations there other than unloading and reloading or any other operation to keep them in good condition.
People who have worked in hospitals have said that as many as 6000 Falun Gong members have undergone operations to have internal organs removed, and that at least three quarters of them have died as a result of the operation.
Any refund on products which have undergone operations as referred to above shall be determined on the basis of the quantity, type, and characteristics of the products at the date used to calculate the refund, in accordance with Article 27.
How would you feel if you had undergone such an operation?
Our colleague, Mr Brok, has undergone an operation.
have undergone a surgical operation or invasive procedure;
b) they have undergone normal tending operations.
(b) Community goods which have undergone processing operations within a free zone;
has not undergone any operation beyond that necessary to preserve it in good condition.
As some Members already know, the President of the European Parliament has undergone a minor operation for appendicitis.
processed products means goods placed under a processing procedure which have undergone processing operations;
a room for desalting, soaking and any other treatment, particularly of natural guts, where these raw materials have not undergone such operations in the establishment of origin;
This operation may be carried out outside the area of origin by undertakings that have accepted and comply with the agreed protocol so as to guarantee the operations undergone by Queso Manchego and ensure its traceability.
5. 'prepared products' means any fishery product which has undergone an operation affecting its anatomical wholeness, such as gutting, heading, slicing, filleting, chopping, etc.;
they have not undergone any operation beyond that necessary to preserve them in good condition while in that country or while being exported.
We need to ensure that the cost of treatment following an operation undergone in a different Member State does not result in additional costs being charged to the healthcare professionals in the patient's Member State of affiliation, particularly in the case of emergency operations.
Eligible hop areas are hop areas in Germany which are entirely planted and which have already undergone normal tending operations in accordance with local standards, at the moment of submission of the application referred to in Article 2.
Certain specified waste shall cease to be waste within the meaning of point (1) of Article 3 when it has undergone a recovery operation and complies with specific criteria to be developed in accordance with the following conditions:

Alternatives:

He had an operation.
He had undergone surgery.
He underwent an operation.
He has undergone an operation.

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he has undergone operation vs he had undergone operation