used to indicate who is supposed to have or use something or where something is intended to be put

用于, 为了
used before a noun when we are not talking about a specific person or thing

一个, 一
used when referring to a person or thing that was previously mentioned or one that is identified easily

这个, 那
a day fixed by law when we do not have to go to school or work, usually because of a religious or national celebration

假日, 节日
a meal we eat in the middle of the day

午餐, 中餐
the main meal of the day that we usually eat in the evening

晚餐, dîner (meaning in Chinese context)
the quantity that is measured in seconds, minutes, hours, etc. using a device like clock

时间, 时刻
a set of large folded sheets of paper with lots of stories, pictures, and information printed on them about things like sport, politic, etc., usually issued daily or weekly

报纸, 新闻纸
a car that has a driver whom we pay to take us to different places

出租车, 计程车
a digital message that is sent from one person to another person or group of people using a system called email

电子邮件, 邮件
a large place where planes take off and land, with buildings and facilities for passengers to wait for their flights

机场, 航空站
