1月17日英文可以写成以下三种常用格式：

1. Month Day, Year

– January 17, 2023

2. Day Month Year

– 17 January 2023

3. Year-Month-Day

– 2023-01-17

These formats are commonly used in English-speaking countries, and each has its own specific application. The first format, “Month Day, Year,” is often used in formal correspondence and is the most widely recognized. The second format, “Day Month Year,” is commonly used in casual writing and is also easily understood. The third format, “Year-Month-Day,” is often used in international contexts and is the standard format for dates in many countries around the world.