难题求解答

JohnY6

医生吃鱼 发表于 2016-4-1 13:35
你是说改成：sth for which 7 dollars was paid？
语法上来说应该可以。

也就是说B错的原因在于 后面修饰成分是没有主语的是吗

for which was previously paid $7 per year
如果我们把修饰都去掉提取主干的话会发现没有主语

变成 for which $7 was previously paid 会不会好一点？