问个英语语法问题In 2009,basic and applied research spending constituted 4.7% and 12.6% of total R&D expenditure,dropping from 2000 levels of 5.2% and 17%,respectively.这里的dropping作什么成分啊?
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问个英语语法问题In 2009,basic and applied research spending constituted 4.7% and 12.6% of total R&D expenditure,dropping from 2000 levels of 5.2% and 17%,respectively.这里的dropping作什么成分啊?
问个英语语法问题
In 2009,basic and applied research spending constituted 4.7% and 12.6% of total R&D expenditure,dropping from 2000 levels of 5.2% and 17%,respectively.
这里的dropping作什么成分啊?
问个英语语法问题In 2009,basic and applied research spending constituted 4.7% and 12.6% of total R&D expenditure,dropping from 2000 levels of 5.2% and 17%,respectively.这里的dropping作什么成分啊?
现在分词短语,做伴随状语.
In 2009, basic and applied research spending constituted 4.7% and 12.6% of total R&D expenditure, dropping from 2000 levels of 5.2% and 17%, respectively.
2009 年,基本和应用研究的支出占总研发开支比例,从 2000 年的 5.2% 和 17% 分别下降到 4.7% 和 12.6%。
伴随状语
dropping from 2000 levels of 5.2% and 17%为独立结构。
dropping是来进一步修饰前面的成分,做伴随状语