求解一道有关时态和固定用法的SAT语法题Prior to invention of the printing press in 1400s,the only way (to produce) duplicates (of) books (has been) to have copies (handwritten) by professional scribes.因为出现1400年,要讲后面的has been改为过去式had been我想问一下1 had been to have copies 是什么用法 2 handwritten是形容词 修饰have的话应该是变为副词啊 如果是修饰copies的话 形容词可以放在名词后面么

求解一道有关时态和固定用法的SAT语法题
Prior to invention of the printing press in 1400s,the only way (to produce) duplicates (of) books (has been) to have copies (handwritten) by professional scribes.
因为出现1400年,要讲后面的has been改为过去式had been
我想问一下1 had been to have copies 是什么用法
2 handwritten是形容词 修饰have的话应该是变为副词啊 如果是修饰copies的话 形容词可以放在名词后面么