1
the [ordinal] day of the month
The 15th day of the month is payday.
每月的第15日是发薪日。
日期；几号
先理解核心含义，再看它在真实句子里的用法。
日期；几号
the specified day of the month
The 15th day of the month is payday.
每月的第15日是发薪日。
月份中的某一天
the specified day of the month
What day of the month is it today?
今天几号？
Please write the day of the month at the top of the form.
请在表格顶部写上日期（几号）。
The meeting is scheduled for the last day of the month.
会议安排在当月的最后一天。
The 15th day of the month is payday.
每月的第15日是发薪日。
On the last day of the month, we have a meeting.
在每月的最后一天，我们有一个会议。
用于询问日期，相当于“今天是几号？”
What day of the month is it today?
今天是这个月的几号？
Not this
What day of month is it?
Use this
What day of the month is it?
汉语中常省略冠词，但英语中 'day of the month' 这个短语必须在 month 前加定冠词 'the'。
Not this
Today is 15 day of the month.
Use this
Today is the 15th day of the month.
英语中表示具体的日期要用序数词（如 15th），并且前面需要定冠词 'the'，而汉语直接用基数词。
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Dictionary facts from ECDICT, WORDNET.