I find them very helpful in increasing my konwledge of English .这一 句那里错了.

题目

I find them very helpful in increasing my konwledge of English .这一 句那里错了.

答案

楼上说的不对,这里楼主的语法用错了.
这里是过去时,所以find应该改为found.
I found them very helpful in increasing my knowledge of English .