His grandma is sick so he has been busy every night visiting her in the hospital.其中的 visiting her in the hospital.为什么能放在这里,是什么用法?

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His grandma is sick so he has been busy every night visiting her in the hospital.其中的 visiting her in the hospital.为什么能放在这里,是什么用法?

His grandma is sick so he has been busy every night visiting her in the hospital.其中的 visiting her in the hospital.为什么能放在这里,是什么用法?
His grandma is sick so he has been busy every night visiting her in the hospital.其中的 visiting her in the hospital.为什么能放在这里,是什么用法?

His grandma is sick so he has been busy every night visiting her in the hospital.其中的 visiting her in the hospital.为什么能放在这里,是什么用法?
这里是be busy doing sth. 只是前面用的是完成时而已.并且在这个段玉丽插入了一个every night做补充说明,当然你也可以把every night 放在最后,这样的话visting部分就不在句末了.
好运~

visiting her 是目的状语 。也可以变成 to visit her。

我以前学的知识是说be busy doing something 是表示“忙于什么事情”,其中be busy doing sth 等于be busy with +名词,两者都表示“忙于……”所以整句话的意思表示“他的奶奶病得很严重,所以他每晚都忙于到医院看望奶奶”。

因为句子成分已完整,这里是非谓语动词,用现在分词作状语
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