帮小弟检查一下这句话是否有语法错误,

题目

帮小弟检查一下这句话是否有语法错误,
the ideas mentioned in the second paragraph are very different from that of third paragraph.

答案

from that---->from those
因为：比较时应该是同级,同等比较：
完整形式应该是：
The ideas mentioned in the second paragraph are very different from THE IDEAS MENTIONED IN THE third paragraph.
因为the ideas mentioned in the前面已经出现,所以英文中避免重复,就最好省略了,改成that或those!