请教大全上那题Where once....怎么理解，谢谢！

Pearly

19

哪位达人记得这题，我不明白什么意思，考点又在哪？

Where once the union had acquiesced to the prejudices of its English-speaking members by supporting the imposition of an alien tax on immigrant workers, after 1897 the United Mine Workers made a determined effort to enlist Italians and Slavs in its ranks.

mbz

Can you type the whole question?

I understand the meaning, but don't know what the question is and what you want to know about it.

洛拉

where作连词有一个意思是和whereas差不多的，后面应该是考过去完成时的用法和by的用法，也建议把句子和选项都贴出来，否则这么看没有比较也不太确定