the little girl got the door open with some ______(difficult)到底是用单数还是复数呢?有什么要求吗?还有the girl looked worried ,but nobody understands her _____(worry)用单数还是复数
问题描述：
the little girl got the door open with some ______(difficult)
到底是用单数还是复数呢?
有什么要求吗?
还有the girl looked worried ,but nobody understands her _____(worry)
用单数还是复数
答
the little girl got the door open with some difficulties.
the girl looked worried ,but nobody understands her worries.
答
都是复数
答
difficulty
单数.difficulty做单数表示困难,用复数,是做可数名词,表示困难的事.
译文：这个小女孩开门有些困难（不是困难的而事）
worries
这个女孩看起来很担心,但没人知道她担心什么