高中英语改错题 需要解释原因

题目

高中英语改错题 需要解释原因
He is no more fool.He can do the work well.

I usually look down upon that as my duty.
He reparied well my bicycle for love several times.
He has many books ,but none of them is on English grammar books.
We needn't to go now.
John is as clever,if not cleverer than,as Bill
He preferred staying at home to be going with us to HongKong.
（都要删掉一个词）

答案

1 more He is no fool 他不是傻子 He is no more (a) fool 他不再是傻子（需加冠词a）
2 down look upon that as my duty 把那个看做我的职责
3well 此处副词well多余
4books on English grammar 没有一本书是关于英语语法的（而不关于语法书）
5to need此处为情态动词 后直接跟动词原形
7be prefer doing to doing be动词多余