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so we found ways to raise money,such as putting on a show...的putting on为啥要用putting而不用put on

分类: 作业答案 • 2021-12-28 10:38:53

问题描述：

so we found ways to raise money,such as putting on a show...的putting on为啥要用putting而不用put on

答

因为as 是介词,介词后面如果是动词的话都要变成doing形式