高考英语,一道单选(句子分析)School across China are expectde to heir 50,0
高考英语,一道单选(句子分析)
School across China are expectde to heir 50,000 college graduates this year as short-term teachers,almost three times the number hired last year, to help reduce unemployment pressures.
请问 to help reduce unemployment pressures在句中作什么成分?