做某事有麻烦用英语怎么说

"to have trouble with something" 或 "to have a hard time with something" 是表示做某事有麻烦的常用说法。
例句：
I'm having trouble understanding this math problem. (我做这道数学题有麻烦。)
He's having a hard time adjusting to his new job. (他适应新工作有困难。)
这个说法源于英语中的动词短语 "to have trouble"，其中 "trouble" 指的是困难或麻烦，"have" 是拥有的意思，所以 "to have trouble" 意思就是"拥有困难"。