has difficulty doing sth还是has difficulty to do sth

has difficulty doing sth还是has difficulty to do sth 用have difficulty doing 造句 have some difficulty (in) doing sth.中的 difficulty可数吗 have difficulty doing sth 还是have difficulties dohave difficulty doing sth 还是have difficulties doing sth have difficulties/difficulty in doing sth? 关于have difficulty in doing sth 变形 用have difficulty in doing sth 造句 have difficulty on sth对吗是不是have difficulty in doing sth,have difficulty on sth have difficulty in doing sth .have trouble in doing sth 是have difficulty doing sth还是have difficult doing sth? have difficulty doing sth可以写成 have difficulties doing sth have a difficulty in doing something difficulty 是不可数的吗?in 可不可以省略? have difficulty 搭配可不可以说have difficulty when doing sth.?为什么 请问,There is difficulty in doing句型和It is difficulty to do ,有什么区别? have difficulty in doing sthin 可以省略吗? have difficulty doing sth 为什么不用 to do sth? have trouble doing和have difficulty in doing有区别吗? have difficulties （in）doing 和 have difficulty （in）doing 有什么区别?