中国日历单元（Introduction+to+Chinese+Calendar）

Unit Overview @第二课：日期和星期的表达（Dates and Days of the week) @第三课：今天昨天和明天（Today，Yesterday, and Tomorrow) @第四课：季节 (The Four Seasons) || media type="custom" key="23510710"
 * In this unit, you will learn
 * Year
 * Months of the year
 * Dates
 * Days of the week
 * Today, yesterday, and tomorrow
 * Different weather conditions
 * Expressions of different weather
 * Seasons
 * Talk about Chinese lunar calendar
 * Compare the Chinese calendar with Western Calendar. || @第一课：一年中的每个月 (Months of the Year)