请问老师:这里的介词短语,在句子中作为什么成分?He then ran for Governor of New york.She was invited to stand as the Liberal candidate.We'll run a training course for the local teachers this summer.
Although portrayed as a positive movement to open the territory west of the Mississippi to westward expansion by Anglo settlers, the Indian Removal Act resulted in the brutal death of many natives who refused to go peacefully.不太懂粗体部分的结构和意思。