I learn thar learned earnest men earn much by learning 请问这个句子有没有语法错误

题目

I learn thar learned earnest men earn much by learning 请问这个句子有没有语法错误
thar打错了是that

答案

I learn that learned earnest men earn much by learning.
语法没错.不过learned和earnest 调换一下位置可能更好些.
句意：
我认识到那些认真负责的、学识渊博的人从学习当中能学到更多东西.