帮我翻译一下！（不要机器翻译的）急……

Non-profit organizations are organizations of modern society a very special form, between the government and enterprises. Because it can promote the spirit of mutual assistance to promote social welfare, society has a good positive, so the world have taken various measures to promote its growth and development. This paper attempts to tax expenditure from the point of view, combined with preferential tax policies for the United States advanced to discuss the promotion of the existing preferential tax policies for non-profit organization deficiencies, and propose measures for improvement