推荐回答（5个）
有复数形式
difficulties[ˈdifikəltiz]
n. 困难（ difficulty的名词复数 ）；难度；难事；麻烦；
1.You have to admit that you are, in fact, in difficulties.
你不得不承认，你事实上是陷入了困境。
来自柯林斯例句
2. He described the difficulties of surviving for four months as a captive. 他描述了被俘4个月里挣扎求生的艰难岁月。
来自柯林斯例句
3. The investigators complained about the difficulties of squeezing information out of residents. 调查人员抱怨说很难从居民身上获取信息。
来自柯林斯例句
4. Integrating the pound with other European currencies could cause difficulties. 把英镑与欧洲其他货币合并会引发许多难题。
来自柯林斯例句
5. Under such circumstances, it is little wonder that they experience difficulties. 在这种情形下，他们遇到困难就不足为怪了。
来自柯林斯例句
1楼的,我给你一巴掌轰过去.difficulty是名词.去y才是形容词.difficulty有单复数之分！不过真正做题目时也较难判断.你可以看参考答案,总结题型与问法.
difficulty
当“困难,艰难”解释的时候是名词但不可数；当“难事,难处,难题”解释时就可数。例如：
There are a lot of difficulties that have to be overcome.
有许多困难必须克服。
difficult是形容词,意为 困难的
difficultly书副词,意为 困难地
difficulty是名字,意为 困难,难处
复数为difficulties
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