我剛做了一個手術英文點講?

hi, u can say ...
I just took an operation/a surgery recently.
in HK, ppl likes to use (operation); in USA, ppl use (surgery). They are the same meaning, u can use either one.

唔得. Surgery 唔應該禁用..用operation好D

I have just had an operation (last week/ last month)

以上例句皆錯！！何解？應當用被動句子！

我做手術是醫生幫我做手術！並非自己動手做手術！

I have been taken an operation.

I have been completed an operation.

I have been proceeded in an operation (by Doctor).

I just performed a surgery.