更新时间2019-01-01 20:04:45
He may have acute appendicitis，in which case he will have to be operated on. 这里 operate on是“对…动手术；对…起作用“的意思。那么这里是不是多了一个on？
He may have acute appendicitis, in which case he will have to be operated on. 他可能得了急性阑尾炎,如果是这样,他就得动手术。
“A operate on B"是A为B做手术之意；被动语态就是“B is operated on by A"。
此处就是被动语态，”he will have to be oeprated on":“他将需要被施以手术”。所以on不能省略。
如果要表示因为某个原因要做手术，句型为: 某人 be opeated on for...
He was operated on for lung cancer.他因肺癌动了手术。
The patient can be operated on for the tumor tomorrow. 这个病人明天能做肿瘤手术。
省略了宾语
on后面是指前面的急性阑尾炎
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