"对我来说很难用英语" 可以用 "Engpsh is a challenge for me" 来表达。
这个短语是由 "challenge" 和 "for me" 组成的。"Challenge" 是名词，表示 "困难、挑战"；"for me" 是介词短语，表示 "对于我"。
举例:
"Speaking Engpsh in front of a crowd is a challenge for me." (在人群面前用英语说话对我来说很难)
"Passing the TOEFL is a challenge for me." (通过 TOEFL 对我来说很难)
"Writing emails in Engpsh is a challenge for me." (用英语写电子邮件对我来说很难)