Question

有difficult in doing sth吗？difficulty与difficult的区别是什么?

Answer 1

没有difficult in doing sth，应该是have difficulty in doing sth，意思是做某事有困难。
difficulty与difficult的区别是：
difficulty是名词，difficult是形容词。

difficulty
英[ˈdɪfɪkəlti] 美[ˈdɪfɪˌkʌlti, -kəl-]
n. 难度; 困难，麻烦，难事; 异议，争论，纠葛; 财政困难，（经济）拮据;
[例句]The country is facing great economic difficulties.
该国正面临巨大的经济困难。

difficult 英[ˈdɪfɪkəlt] 美[ˈdɪfɪˌkʌlt, -kəlt]
adj. 困难的; 难做的; 难解的; 不易相处的;
[例句]Hobart found it difficult to get her first book published.
霍巴特发现要出版自己的第一本书很不容易。

Answer 2

有difficult in doing sth吗？没有 。
difficulty 是名词。
difficult是形容词。