The house they had washed away in the floods must be rebuilt before winter comes.
问题描述：
The house they had washed away in the floods must be rebuilt before winter comes.
把 had washed away 换成 had to wash away
答
不行,had washed away 是“已经被冲走”,其中的had 是过去完成时的助动词,无实际意义,若改为had to wash away,则成了“不得不冲走”,意思就不合适了
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