问题描述：
逗号+过去分词短语
1.But the buffalo nickel,produced from 1931 to 1938,honored a pair of connected tragedies from the settlement of the American frontie
这个句子中produced from 1931 to 1938作为非限制性定语从句为什么没有引导词?
2.China’s imports of coarsegrains,crops used to feed animals,are expected to double by 2022.
这个句子中crops used to feed animals是同位语从句吗?为什么也没有引导词?
3.还有这个Broad Group,the builder of Sky City in Wuhan,is XXXXXXXX
the builder of Sky City in Wuhan难道是所谓的同位语短语?
1.But the buffalo nickel,produced from 1931 to 1938,honored a pair of connected tragedies from the settlement of the American frontie
这个句子中produced from 1931 to 1938作为非限制性定语从句为什么没有引导词?
2.China’s imports of coarsegrains,crops used to feed animals,are expected to double by 2022.
这个句子中crops used to feed animals是同位语从句吗?为什么也没有引导词?
3.还有这个Broad Group,the builder of Sky City in Wuhan,is XXXXXXXX
the builder of Sky City in Wuhan难道是所谓的同位语短语?
问题解答：
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