只有第一句话正常 后两句语法没错但都不是正常的英语 不定式表示将来

dd

逻辑关系不明，想说模棱词就多用用

died not dead, only the first one is grammatical correct

对的。独立主格就是主句和从句主语不一致。

第一句对。
第二句，failing 改成 having failed。
第三句，devide 改成 have devided。

不对

这几句独立主格结构用得对吗？求大神指点
An accident happened this afternoon, two people died.
I failed the exam, my mother got mad at me.
还有独立主格结构接不定式的用法是怎样的，我没有搞太懂。老师的例句是
We divided the work, his was to clean the window, mine was to sweep the floor.