Unit 2
- New Year's Day新年Tree Planting Day植树节Mother's Day母亲节Children's Day儿童节Father's Day父亲节Teachers' Day教师节National Day国庆节Christmas Day圣诞节birthday生日fifth第五(5th)
- tenth第十(10th)twelfth第十二(12th)twenty-fifth第二十五(25th)plant种植make a poster制作海报celebrate庆祝have a picnic野餐office办公室together在一起; 共同special特殊的; 特别的.