To read short stories you need to know only about two thousand words.

问题描述:

To read short stories you need to know only about two thousand words.
修改病句

根据句子成分分析,句子是正确的,主谓宾都有了.如果一定要修改的话,只能加上个逗号,前面的to do是目的状语,
To read short stories,you need to know only about two thousand words .