HAVE STH.LEFT中LEFT是什么词性

HAVE STH.LEFT中LEFT是什么词性 Left是什意思? left left left Left left sth at home中at可以省略吗?rt there's none left.中left是leave的过去分词,那这一句是现在完成时吗?为什么不用加have/has leave sth.sp.中sp.是否可以省略考试中曾遇过一道题：When I home,I realized I my Chinese book.A got,had left B get,have left C got,had forgot D got to,had forgot我选A,但答案是C,第一个空我明白,第二个空老师说leave sth. you have left sb Past flowers have left I have few left 句中的left have left 和left有什么区别? have left 和left有什么区别? She should _____for Italy last weekA.have left B.have been left关键是为什么啊! I have one day left 其中 left 是什么语法用法I have one day left 其中 left 是什么语法用法 还有一个句子也不太明白,Tracy is terrified of being left alone .这一句是be teffified of being alone（如果是这个,left是什 left,left.left,right I have little money left,请问这个left的形式是怎么来的?