十八日

十八日

"十八日" means "the eighteenth day."

In this sentence, '十八日' specifies a date within a month, acting as a time expression.

我计划在五月十八日去北京旅游。

I plan to travel to Beijing on May 18th.

Here, '十八日' refers to a specific day in the month, describing the relationship of the date to the week.

十八日是星期四。

The eighteenth is Thursday.

In this case, '十八日' indicates a specific date in a historical context, adding significance to the day.

去年八月十八日是个难忘的日子。

Last year's August 18th was an unforgettable day.