James is not a good player as his father.这个句子哪错了？

as...as 结构加名词
这么说吧
He is as clever as Mary。
这句话你肯定懂了
如果我想说 他和玛丽都是聪明的学生就应该是
He is as clever a student as Mary。
这个句型要记好
as+形容词+a/an+名词+as+。。。

James is his father is
所比较的必须形式一样

同等比较级

因为是说James 不如他爸爸，“不如”的固定语是not as/so...as所以应该改为：James is not as a player as his father.