第1个回答 2009-11-20
这个句子是对的,如果是作文的话,后面改成:It was too difficult to understand for me.会稍微好一点
第2个回答 2009-11-20
前一句没问题
后一句:It was difficult for me to understand clearly.本回答被网友采纳
第3个回答 2009-11-20
I felt difficult to understand clearly最好改为
I felt difficulties in understanding it clearly