北师大高中英语模块3 Unit8 Lesson4:

The horses began to have serious difficulties with the snow and the cold.

The next to go was Captain Oates, who was having great difficulty walking.

解释：

difficulty既可作可数名词，也可作不可数名词，但在have some difficulty with sth / (in) doing sth 句型中通常作不可数名词。例如：

《新牛津英汉双解大词典》

difficulty: [mass noun]the state or condition of being difficult 困难；困境

Guy had no difficulty in making friends. 盖伊很容易交朋友。

《麦克米伦高阶英汉双解词典》

difficulty: [U] if you have difficulty with something, you are not able to do it easily 困难：

+ with: She’s having difficulty with her schoolwork this year. 今年她在功课上遇到了困难。

difficulty (in) doing sth: Six months after the accident, he still has difficulty walking.

事故发生6个月后，他走路仍有困难。

We had considerable difficulty finding anywhere to park. 我们很难找到停车的地方。

更多例句：

She has difficulty breathing.  她呼吸有困难。《简明英汉词典》

I had little difficulty in persuading the others to come.

我没费多少事就说服其他人来了。《牛津英语搭配词典》

She had difficulty in starting her car.

她的车发动不起来了。《牛津英语搭配词典》

having difficulty with the engine

引擎出问题《牛津英语搭配词典》

Have you any difficulty with this? -No, nothing to speak of.

这方面有什么困难吗？－－没有什么困难。《爱词霸英汉例句精华》