what we used to think was impossible does now seem possible
what we used to think 做主语, was impossible 是系表结构,那后面的呢?
人气：191 ℃ 时间：2020-04-12 16:58:11
解答
what we used to think was impossible 是主语从句,也就是说整个相当于主语,后面does是谓语,（what)now seem possibles 是宾语从句
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