书上写的是:It was Sunday.
但有时见到:It was a Sunday.
有无冠词a,区别在哪里?
It was Sunday. 说话人知道指的那一天。如果用a Sunday. 说话人不记得确切是哪个星期天。我给你换一个比较一下:It was a Mr Liu. 是某位姓刘的先生,说话人应该不认识他。如果用It was Mr Liu. 说话人知道刘先生是何许人。
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