All of us have read the story book written by a middle schoo

1 None of us has read the story book written by a middle school student.讲这一题考的是不定代词的否定形式.not与all、both、every、always、entirely等连用时可表示部分否定.如:
All is not gold that glitters. 闪光的未必都是金子.
Every person cannot do it. 并非每一个人都能做到这一点.
He is not always so kind to people.他并非总对人那么友好.
注:表示全部否定时,常用none、no、neither、never、 nowhere等,或者not与any、anything等连用也可表示全部否定,另外all、both、every等和带in-,un-,dis-等否定前缀的词连用时,也表示全部否定.如:
I know none of them. 他们中我一个人也不认识.
I don't know any of them. 我不认识他们中任何一个人.
All your answers are incorrect. 你的答案都不对. 2.His brother has had a new bike for a month.讲这一题是考时态的转换.从后面的状语我们可以判断是要求改成完成时态.时态是靠动词来表现,所以首先判断这个动词有没有完成时态.BUY 这个动词是个瞬间动词.没有完成时态.所以不能用.而HAVE 也有买的意思.