老师们好,关于无动词分句和相关知识我还没掌握好，如下几点请帮确认是否理解正确？

1):He was ill for 7 days(for 7 days 作状语修饰谓语was ill,而不是修饰ill)

2):Ill for 7 days, he didn't attend that important meeting(Ill for 7 days为无动词分句整体作状语)

3):The disease made him absent from work for 7 days,so he missed the important meeting(Absent from work for days看成无动词分句,作为整一个整体在句中宾语补足语,来源于He was absent from work for 7 days,单从Absent from work for 7 days这个分句来说,for 7 days和absent from work的貌似没有修饰关系,只有还原成he was absent from work for 7 days才可以看出 for 7 days是修饰 谓语be absent from work).

请问我的理解哪里有出入或者不准确么？