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difficulty与difficulties(区别)英语

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difficulty与difficulties(区别)英语
1.They may have difficulty getting to Fujian .
2.did your father have any difficulty in his way yesterday?
3.I hear some difficulties in understanding the people.
为什么以上三句有些用difficulty又有些用difficulties
那么什么时候用difficulty和difficulties?
difficulty与difficulties(区别)英语
不加复数表示抽象概念,用于表示"困难"这一概念.为不可数名词.
加复数是表示困难的事,可数名词