---------------------------------------------------------------------------------------------------
介词词组in advance相当于beforehand,意思是:事先;预先。
再如:
The factory fulfilled the state production plan one month in advance.
这个工厂提前一个月完成国家生产计划。
she received one month's salary in adwance.in advance means beforehand.for instance,the factory fulfilled the state production plan one month in advance.
SHE RECEIVED ONE MONTH'S SALARY IN ADVANCE.IN ADVANCE MEAS BEFOREHAND.FOR INSTANCE,THE FACTORY FUFILLED THE STATE PRODUCTION PLAN ONE MONTH IN ADVANCE.