1. 正式场合或书面表达：

“The Chinese New Year, also known as Spring Festival, is celebrated on the first day of the first lunar month of the Gregorian calendar, which usually falls between January and February.”

2. 非正式场合或口语表达：

“Chinese New Year is on the first of January or February, depending on the lunar calendar.”

3. 文化介绍或教学情境：

“The Chinese New Year, marking the beginning of the lunar new year, is typically observed on the first day of the first month in the Chinese lunar calendar, which corresponds to late January or early February in the Gregorian calendar.”

4. 询问或确认信息：

“Could you please tell me when Chinese New Year is? It’s usually in January or February, right?”

5. 亲切或节日祝福：

“Happy Chinese New Year! It’s time to celebrate the first day of the lunar new year, which usually falls in January or February.”