what we used to think was impossible does now seem possible
问题描述:
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?
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