25. When study different cultures and societies, anthropologists often focus on marriage
A B
as a contractual agreement between different parties.
C D
我选的是A。觉得focus on sth. as ... 怪怪的。
另,是不是when后面如果省略主语,只能是现在分词或过去分词呢?
谢谢!
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When studying, I focus my mind on my lesssons.
when后如果省主谓,还可以加很多,adj,不定式,等
focus sth. on sth.当然没问题。可原题中的是 focus on sth. as sth. 啊!
大哥再给指点指点吧!
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