__twice,the postman refused to deliver our letters unless we

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__twice,the postman refused to deliver our letters unless we chained our dog up.
a.having bitten b.being bitten c.bitten d.to be bitten
正确答案是c
我想问的是如果将a项改为having been bitten的时候.可不可以选a?

1.楼主所言极是,不能选A.
2.A having bitten其实是bitting的完成式.那就意味着句子主语the postman是该动作bit的主动发出者.
一不符合逻辑,“邮递员咬人”吗?
二则bitten后面没有宾语,“咬谁”呢?
3.如果要表示“已经被咬过两次”的话,的确如楼主所言,应该改成having been bitten才可以.

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